KR20190005247A - Organic light-emitting device - Google Patents

Abstract

The present invention relates to an organic light emitting device having high efficiency and long lifetime, which comprises: a first electrode; a second electrode; and an organic layer including a light emitting layer interposed between the first and second electrodes.

Description

Organic light-emitting device

Embodiments of the present invention relate to an organic light emitting device.

An organic light-emitting device is a self-light-emitting device having a wide viewing angle, excellent contrast, fast response time, excellent luminance, driving voltage and response speed characteristics, and being able to have multiple colors .

A hole transport region, an emission layer, an electron transport region, and a second electrode are sequentially formed on the first electrode in the organic light emitting device. Lt; / RTI > structure. The holes injected from the first electrode migrate to the light emitting layer via the hole transporting region and electrons injected from the second electrode migrate to the light emitting layer via the electron transporting region. The carriers such as holes and electrons recombine in the light emitting layer region to generate an exiton. This exciton changes from the excited state to the ground state and light is generated.

Embodiments of the present invention provide an organic light emitting device.

One embodiment of the present invention is a liquid crystal display comprising: a first electrode; A second electrode; And an organic layer including a light emitting layer interposed between the first electrode and the second electrode,

Wherein the light emitting layer comprises a first host represented by the following Formula 1 and a second host represented by the following Formula 2:

≪ Formula 1 >

(2)

Among the above general formulas (1) and (2)

A ₁₁ , A ₁₂ , A ₁₃ and A ₁₄ are each independently selected from the group consisting of benzene, naphthalene, pyridine, pyrimidine, quinoline, isoquinoline, naphthyridine, 1,8-naphthyridine, Naphthyridine, 1,6-naphthyridine, 1,7-naphthyridine, 2,7-naphthyridine, quinoxaline, phthalazine, quinazoline and cinnoline;

X ₁₁ is _{O, S, C (R 17} ) (R 18), Si (R 17) (R 18), P (R 17), B (R 17), P (= O) (R 17) or N _{- [(L 12) a12 -} (R 12) b12] , and;

L ₁₁ to L ₁₃ and L ₂₁ independently represent a substituted or unsubstituted C ₃ -C ₁₀ cycloalkylene group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkylene group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkylene group, C ₁₀ cycloalkenyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl alkenylene group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, A substituted or unsubstituted divalent non-aromatic condensed polycyclic group and a substituted or unsubstituted divalent non-aromatic heterocyclic polycyclic group;

a11 to a13 and a21 are independently selected from 0, 1, 2, 3, 4 and 5;

R ₁₁ , R ₁₂ and R ₂₁ independently represent a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C ₃ -C ₁₀ A substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted aryl group, A substituted or unsubstituted monovalent non-aromatic heterocyclic polycyclic group, -N (Q ₁ ) (Q ₂ ), -Si (Q ₃ ) (Q ₄ ) (Q ₅ ) and it is selected from _{-B (Q 6) (Q 7} );

b11, b12 and b21 are independently selected from 1, 2, 3 and 4;

R ₁₃ to R ₁₈ and R ₂₂ to R ₂₄ independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, , A hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C ₁ -C ₆₀ alkyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, hwandoen C ₂ -C ₆₀ alkynyl group, a substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, a substituted or unsubstituted C ₁ -C ₁₀ heteroaryl cycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₆ ring - C ₆₀ aryloxy group, a substituted or unsubstituted C ₆ -C ₆₀ arylthio group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl groups, substituted or unsubstituted 1 is a non-aromatic condensed polycyclic group, and a substituted or unsubstituted 1, a non-aromatic heterocyclic is selected from a condensed polycyclic group;

b13 to b16 and b22 to b24 are independently of each other selected from 1, 2, 3 and 4;

The substituted C ₃ -C ₁₀ cycloalkylene group, the substituted C ₁ -C ₁₀ heterocycloalkylene group, the substituted C ₃ -C ₁₀ cycloalkenylene group, the substituted C ₁ -C ₁₀ heterocycloalkenylene group, the substituted a C ₆ -C ₆₀ aryl group, a substituted C ₁ -C ₆₀ heteroaryl group, a substituted divalent non-aromatic condensed polycyclic group, a substituted bivalent non-condensed polycyclic aromatic heterocyclic group, a substituted C ₁ -C ₆₀ A substituted C ₂ -C ₆₀ alkenyl group, a substituted C ₂ -C ₆₀ alkynyl group, a substituted C ₁ -C ₆₀ alkoxy group, a substituted C ₃ -C ₁₀ cycloalkyl group, a substituted C ₁ -C ₁₀ hetero A substituted C ₃ -C ₁₀ cycloalkenyl group, a substituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted C ₆ -C ₆₀ aryl group, a substituted C ₆ -C ₆₀ aryloxy group, a substituted C ₆ -C ₆₀ arylthio group, a substituted C ₁ -C ₆₀ heteroaryl groups, substituted monovalent non-aromatic condensed polycyclic group, a substituted monovalent non-aromatic hydrocarbon ring at least one substituent of the condensed polycyclic group,

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group and a C ₁ -C ₆₀ alkoxy group;

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, or a salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocyclic condensed polycyclic group, -N (Q _{11) (Q 12), -Si (Q} 13) (Q 14) (Q 15) and _{-B (Q 16) (Q 17} ) of the at least one substituted, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl , A C ₂ -C ₆₀ alkynyl group and a C ₁ -C ₆₀ alkoxy group;

C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryl A C ₆ -C ₆₀ arylthio group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group and a monovalent non-aromatic heterocyclic polycyclic group;

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group, a C ₁ -C ₆₀ alkoxy group, a C ₃ -C ₁₀ cycloalkyl group, a C ₁ -C ₁₀ heterocyclo alkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ aryl come T, C ₁ - C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocyclic condensed polycyclic _{group, -N (Q 21) (Q} 22), -Si (Q 23) (Q 24) (Q 25) and _{-B (Q 26) (Q 27} ) of the at least one substituted, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkyl alkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ aryl come T, C ₁ -C ₆₀ H. Heteroaryl group, monovalent non-aromatic condensed polycyclic group and monovalent non-aromatic heterocyclic polycyclic group; And

_{-N (Q 31) (Q 32} ), -Si (Q 33) (Q 34) (Q 35) and _{-B (Q 36) (Q 37} ); ;

Q ₁ to Q _7, Q ₁₁ to Q _17, Q ₂₁ to Q ₂₇ and Q ₃₁ to Q ₃₇ are, each independently, hydrogen, C ₁ -C ₆₀ alkyl, C ₁ -C ₆₀ alkoxy group, C ₆ -C ₆₀ together An aryl group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic heterocyclic polycyclic group.

The organic light emitting device according to an embodiment of the present invention can exhibit high efficiency and long life characteristics.

1 is a schematic view illustrating a structure of an organic light emitting diode according to an embodiment of the present invention.
2 and 3 are graphs of luminance versus efficiency of the organic light emitting device according to embodiments of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods of achieving them will be apparent with reference to the embodiments described in detail below with reference to the drawings. However, the present invention is not limited to the embodiments described below, but may be implemented in various forms.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or corresponding components throughout the drawings, and a duplicate description thereof will be omitted .

In the following examples, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

In the following embodiments, terms such as inclusive or possessive are intended to mean that a feature, or element, described in the specification is present, and does not preclude the possibility that one or more other features or elements may be added.

In the following embodiments, when a part of a film, an area, a component or the like is on or on another part, not only the case where the part is directly on the other part but also another film, area, And the like.

In the drawings, components may be exaggerated or reduced in size for convenience of explanation. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, and thus the present invention is not necessarily limited to those shown in the drawings.

In the present specification, the phrase " (organic layer) includes a first host " means that a first host (organic layer) belonging to the category of the above formula 1 or two or more different first Host can include "

In the present specification, the term " organic layer " refers to all single layers and / or plural layers interposed between the first electrode and the second electrode of the organic light emitting device. The material contained in the layer of the " organic layer " is not limited to an organic material.

1 is a schematic view illustrating a structure of an organic light emitting diode according to an embodiment of the present invention.

A substrate may be further disposed below the first electrode 110 or over the second electrode 190 of FIG. The substrate may be a glass substrate or a transparent plastic substrate having excellent mechanical strength, thermal stability, transparency, surface smoothness, ease of handling, and waterproofness.

The first electrode 110 may be formed, for example, by providing a first electrode material on the substrate using a deposition method, a sputtering method, or the like. When the first electrode 110 is an anode, the first electrode material may be selected from materials having a high work function to facilitate hole injection. The first electrode 110 may be a reflective electrode, a transflective electrode, or a transmissive electrode. As the material for the first electrode, indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO ₂ ), zinc oxide (ZnO) and the like which are transparent and excellent in conductivity can be used. (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), or the like is used as the first electrode material for forming the first electrode 3 which is a translucent electrode or a reflective electrode. ), Magnesium-indium (Mg-In), and magnesium-silver (Mg-Ag).

The first electrode 110 may have a single layer or a multilayer structure having a plurality of layers. For example, the first electrode 110 may have a three-layer structure of ITO / Ag / ITO, but the present invention is not limited thereto.

An organic layer 150 including a light emitting layer is disposed on the first electrode 110. The organic layer 150 may include a hole transporting region interposed between the first electrode and the light emitting layer, and an electron transporting region interposed between the light emitting layer and the second electrode.

The hole transporting region may include at least one of a hole injecting layer (HIL), a hole transporting layer (HTL), a buffer layer and an electron blocking layer (EBL), and the electron transporting region may include at least one of a hole blocking layer (HBL) (ETL), and an electron injection layer (EIL).

The hole transporting region may have a single layer made of a single material, a single layer made of a plurality of different materials, or a multi-layered structure having a plurality of layers made of a plurality of different materials.

For example, the hole transporting region may have a single layer structure composed of a plurality of different materials, or may have a structure of a hole injection layer / hole transport layer, a hole injection layer / hole transport layer / buffer layer, A hole transporting layer / a buffer layer, a hole injecting layer / a hole transporting layer / an electron blocking layer, or a hole transporting layer / electron blocking layer, but the present invention is not limited thereto.

When the hole transporting region includes a hole injection layer, a vacuum evaporation method, a spin coating method, a casting method, an LB method (Langmuir-Blodgett), an inkjet printing method, a laser printing method, a laser induced thermal imaging (LITI) The hole injection layer may be formed on the first electrode.

When the hole injection layer is formed by vacuum deposition, the deposition conditions may include, for example, a deposition temperature of about 100 to about 500 DEG C, a vacuum degree of about 10 ^-8 to about ^10-3 torr, and a deposition rate of about 0.01 to about 100 A / sec The hole injection layer structure to be formed and the hole injection layer structure to be formed within the deposition rate range of the hole injection layer to be formed.

When the hole injection layer is formed by the spin coating method, the coating conditions include a compound for a hole injection layer to be deposited and a hole for formation to be formed within a range of a coating speed of about 2000 rpm to about 5000 rpm and a heat treatment temperature range of about 80 [ Can be selected in consideration of the injection layer structure.

When the hole transporting region includes a hole transporting layer, the hole transporting layer may be formed by a vacuum evaporation method, a spin coating method, a casting method, an LB method (Langmuir-Blodgett), an inkjet printing method, a laser printing method, a laser induced thermal imaging The hole transport layer may be formed on the first electrode or on the hole injection layer using various methods such as those described above. When the hole transport layer is formed by the vacuum deposition method and the spin coating method, the deposition conditions and the coating conditions of the hole transport layer refer to the deposition conditions and the coating conditions of the hole injection layer.

The hole-transporting region may be at least one selected from the group consisting of m-MTDATA, TDATA, 2-TNATA, NPB, beta-NPB, TPD, Spiro- TPD, Spiro- NPB, alpha -NPB, TAPC, HMTPD, TCTA (N-carbazolyl) triphenylamine), Pani / DBSA (polyaniline / dodecylbenzenesulfonic acid), PEDOT / PSS Poly (3,4-ethylenedioxythiophene) / poly (4-styrenesulfonate) / poly (4-styrenesulfonate) / Pani / CSA (polyaniline / camphor sulfonicacid) Styrene sulfonate), PANI / PSS (polyaniline) / poly (4-styrenesulfonate) / poly (4-styrenesulfonate)), a compound represented by the following formula 201 and a compound represented by the following formula can do:

≪ Formula 201 >

≪ EMI ID =

Of the above formulas (201) and (202)

L ₂₀₁ to L ₂₀₅ independently of each other refer to the description of L ₁₁ in the present specification;

xa1 to xa4 are independently selected from 0, 1, 2 and 3;

xa5 is selected from 1, 2, 3, 4 and 5;

The descriptions of R ₂₀₁ to R ₂₀₄ independently of each other, refer to the description of R ₁₁ in the present specification.

For example, of the above formulas (201) and (202)

L ₂₀₁ to L ₂₀₅ independently represent a group selected from the group consisting of a phenylene group, a naphthylene group, a fluorenylene group, a spiro-fluorenylene group, a benzofluorene group, a dibenzofluorene group, a phenanthrenylene group, And examples thereof include a pyrenylene group, a pyrenylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, a quinolinylene group, an isoquinolinylene group, a quinoxalinylene group, a quinazolinylene group, And a triazylene group; And

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, or a salt thereof, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, a spy-fluorenyl group, a fluorenyl group benzo, dibenzo-fluorenyl group, a phenanthrenyl group, A pyridazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a pyrazinyl group, Naphthylene group, fluorenylene group, spiro-fluorenylene group, benzofluorenylene group, dibenzofluorenylene group, phenanthrenylene group, phenanthrenylene group and phenanthrenylene group which are substituted with at least one of a carbazolyl group and a triazinyl group, , Anthracenylene group, pyrenylene group, chryshenylene group, pyridinylene group, A pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, a quinolinylene group, an isoquinolinylene group, a quinoxalinylene group, a quinazolinylene group, a carbazolylene group and a triazylene group; ;

xa1 to xa4 are, independently of each other, 0, 1 or 2;

xa < 5 > is 1, 2 or 3;

R ₂₀₁ to R ₂₀₄ independently from each other,

A phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a klychenyl group, a pyridinyl group, , A pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group and a triazinyl group; And

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₂₀ alkyl group, a C ₁ -C ₂₀ alkoxy group, a phenyl group, a naphthyl group, an azulenyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, A phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, Naphthyl group, fluorenyl group, spiro-fluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenanthrenyl group, anthracenyl group, pyrene group substituted with at least one of a carbazole group and a triazinyl group, A thienyl group, a thienyl group, a thienyl group, a pyrrolyl group, a pyrrolyl group, A pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group and a triazinyl group; , But is not limited thereto.

The compound represented by Formula 201 may be represented by the following Formula 201A:

≪ Formula 201A >

For example, the compound represented by Formula 201 may be represented by the following Formula 201A-1, but is not limited thereto:

<Formula 201A-1>

The compound represented by the formula (202) may be represented by the following formula (202A), but is not limited thereto:

&Lt; Formula 202A >

The description of L ₂₀₁ to L ₂₀₃ , xa 1 to xa 3, xa 5 and R ₂₀₂ to R ₂₀₄ in the above formulas 201A, 201A-1 and 202A is as described in this specification, and R ₂₁₁ refers to the description of R ₂₀₃ , R ₂₁₃ to R ₂₁₆ independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, acid or a salt thereof, a sulfonic acid or a salt thereof, phosphoric acid or a salt thereof, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl group, C ₁ -C ₆₀ alkoxy group, C ₃ - C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, A C ₆ -C ₆₀ arylthio group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic heterocyclic polycyclic group.

For example, of the above formulas 201A, 201A-1 and 202A,

L ₂₀₁ to L ₂₀₃ independently from each other,

A phenanthrene group, a phenanthrene group, an anthracenylene group, a pyrenylene group, a chrysenylene group, a pyrenylene group, a pyrenylene group, a phenylene group, A pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, a quinolinylene group, an isoquinolinylene group, a quinoxalinylene group, a quinazolinylene group, a carbazolylene group and a triazylene group; And

Wherein the substituent is selected from the group consisting of hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, a salt thereof, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, a spy-fluorenyl group, a fluorenyl group benzo, dibenzo-fluorenyl group, a phenanthrenyl group, anthracenyl A quinolinyl group, a quinazolinyl group, a carbazolyl group, a triazolyl group, a pyrazinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, Naphthylene group, fluorenylene group, spiro-fluorenylene group, benzofluorenylene group, dibenzofluorenylene group, phenanthrenylene group, anthracenylene group, , Pyrenylene group, klychenylene group, pyridinylene group, pyrazinyl A thiomorpholinyl group, a thiomorpholinyl group, a thiomorpholinyl group, a thiomorpholinyl group, a thiomorpholinyl group, a thiomorpholinyl group, a thiomorpholinyl group, a thiomorpholinyl group, a thiomorpholinyl group, ;

xa1 to xa3 are, independently of each other, 0 or 1;

R ₂₀₃ , R ₂₀₄ , R ₂₁₁ and R ₂₁₂ , independently of each other,

A phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a klychenyl group, a pyridinyl group, , A pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group and a triazinyl group; And

Wherein the substituent is selected from the group consisting of hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, a salt thereof, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, a spy-fluorenyl group, a fluorenyl group benzo, dibenzo-fluorenyl group, a phenanthrenyl group, anthracenyl A quinolinyl group, a quinazolinyl group, a carbazolyl group, a triazolyl group, a pyrazinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, A phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, A phenanthrenyl group, an anthracenyl group, a pyrenyl group, A hexenyl group, a pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, quinolinyl group, an isoquinolinium group, a quinoxalinyl group, a quinazolinyl group, a carbazole group and a triazole group possess; ;

R &lt; ₂₁₃ &gt; and R &lt; ₂₁₄ &

A C ₁ -C ₂₀ alkyl group and a C ₁ -C ₂₀ alkoxy group;

Wherein the substituent is selected from the group consisting of hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, Anthracenyl group, pyrenyl group, chrysenyl group, pyridinyl group, thiomorpholinyl group, pyrazinyl group, pyrazinyl group, thiophene group, A C ₁ -C ₂₀ alkyl group substituted with at least one member selected from the group consisting of a pyridyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group and a triazinyl group, And a C ₁ -C ₂₀ alkoxy group;

A phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a klychenyl group, a pyridinyl group, , A pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group and a triazinyl group; And

Wherein the substituent is selected from the group consisting of hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, a salt thereof, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, a spy-fluorenyl group, a fluorenyl group benzo, dibenzo-fluorenyl group, a phenanthrenyl group, anthracenyl A quinolinyl group, a quinazolinyl group, a carbazolyl group, a triazolyl group, a pyrazinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, A phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, A pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyrimidinyl group, Possess group, a quinolinyl group, an isoquinolinium group, a quinoxalinyl group, a quinazolinyl group, a carbazole group and a triazole group possess; ;

R ₂₁₅ and R ₂₁₆ , independently of each other,

A halogen atom, a hydroxyl group, a hydroxyl group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, Phosphoric acid or a salt thereof, a C ₁ -C ₂₀ alkyl group and a C ₁ -C ₂₀ alkoxy group;

Wherein the substituent is selected from the group consisting of hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, Anthracenyl group, pyrenyl group, chrysenyl group, pyridinyl group, thiomorpholinyl group, pyrazinyl group, pyrazinyl group, thiophene group, A C ₁ -C ₂₀ alkyl group substituted with at least one member selected from the group consisting of a pyridyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group and a triazinyl group, And a C ₁ -C ₂₀ alkoxy group;

A phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a klychenyl group, a pyridinyl group, , A pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group and a triazinyl group; And

Wherein the substituent is selected from the group consisting of hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, a salt thereof, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, a spy-fluorenyl group, a fluorenyl group benzo, dibenzo-fluorenyl group, a phenanthrenyl group, anthracenyl A quinolinyl group, a quinazolinyl group, a carbazolyl group, a triazolyl group, a pyrazinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, A phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, A pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyrimidinyl group, Possess group, a quinolinyl group, an isoquinolinium group, a quinoxalinyl group, a quinazolinyl group, a carbazole group and a triazole group possess; ;

xa5 is 1 or 2;

In the above formulas 201A and 201A-1, R ₂₁₃ and R ₂₁₄ may combine with each other to form a saturated or unsaturated ring.

The compound represented by Formula 201 and the compound represented by Formula 202 may include the following compounds HT1 to HT20, but are not limited thereto.

The thickness of the hole transporting region may be from about 100 A to about 10,000 A, for example, from about 100 A to about 1000 A. When the hole transporting region includes both the hole injecting layer and the hole transporting layer, the thickness of the hole injecting layer is about 100 Å to about 10,000 Å, for example, about 100 Å to about 1000 Å, and the thickness of the hole transporting layer is about 50 Å For example, from about 100 A to about 1500 A, for example. When the thicknesses of the hole transporting region, the hole injecting layer, and the hole transporting layer satisfy the above-described ranges, satisfactory hole transporting characteristics can be obtained without substantially increasing the driving voltage.

In addition to the materials described above, the hole transporting region may further include a charge-generating material for improving conductivity. The charge-generating material may be uniformly or non-uniformly dispersed within the hole transport region.

The charge-producing material may be, for example, a p-dopant. The p-dopant may be one of a quinone derivative, a metal oxide, and a cyano group-containing compound, but is not limited thereto. For example, non-limiting examples of the p-dopant include tetracyanoquinodimethane (TCNQ) and 2,3,5,6-tetrafluoro-tetracyano-1,4-benzoquinone di Quinone derivatives such as phosphorus (F4-TCNQ); Metal oxides such as tungsten oxide and molybdenum oxide; And the following compound HT-D1, but the present invention is not limited thereto.

<Compound HT-D1> <F4-TCNQ>

The hole transporting region may further include at least one of a buffer layer and an electron blocking layer in addition to the hole injecting layer and the hole transporting layer as described above. The buffer layer may compensate the optical resonance distance according to the wavelength of the light emitted from the light emitting layer to increase the light emission efficiency. As the material contained in the buffer layer, a material that can be included in the hole transporting region may be used. The electron blocking layer is a layer that prevents the injection of electrons from the electron transporting region.

A vacuum deposition method, a spin coating method, a casting method, an LB method (Langmuir-Blodgett), an inkjet printing method, a laser printing method, a laser induced thermal imaging (LITI) method, or the like is performed on the first electrode 110 or the hole transporting region. ) And the like are used to form a light emitting layer. When the light emitting layer is formed by the vacuum deposition method and the spin coating method, the deposition condition and the coating condition of the light emitting layer refer to the deposition condition and the coating condition of the hole injection layer.

When the organic light emitting device 10 is a full color organic light emitting device, it may be patterned into a red light emitting layer, a green light emitting layer, and a blue light emitting layer for each light emitting layer and individual sub-pixels. Alternatively, the light emitting layer may have a structure in which a red light emitting layer, a green light emitting layer, and a blue light emitting layer are laminated or a structure in which a red light emitting material, a green light emitting material and a blue light emitting material are mixed without layering, and emits white light. Alternatively, the light emitting layer may be a white light emitting layer, and may further include a color converting layer or a color filter that converts the white light into light of a desired color.

The light emitting layer may include a host and a dopant.

The host may include a first host represented by the following formula (1) and a second host represented by the following formula (2):

&Lt; Formula 1 >

(2)

Wherein A ₁₁ , A ₁₂ , A ₁₃ and A ₁₄ are each independently selected from the group consisting of benzene, naphthalene, pyridine, pyrimidine, quinoline, isoquinoline, 2,6-naphthyridine, Pyridine, 1,5-naphthyridine, 1,6-naphthyridine, 1,7-naphthyridine, 2,7-naphthyridine, quinoxaline, phthalazine, quinazoline and cinnoline.

For example, in Formula 1, A ₁₁ , A ₁₂ , A ₁₃ and A ₁₄ are each independently selected from the group consisting of benzene, naphthalene, pyridine, pyrimidine, quinoline, isoquinoline, 2,6- But are not limited to, naphthyridine, 1,5-naphthyridine, 1,6-naphthyridine, 1,7-naphthyridine, 2,7-naphthyridine, quinoxaline and quinazoline.

As another example, in the above formula (1), A ₁₁ and A ₁₄ are each independently selected from the group consisting of benzene, naphthalene, pyridine, pyrimidine, quinoline, isoquinoline, 2,6-naphthyridine, Naphthyridine, 1,6-naphthyridine, 1,7-naphthyridine, 2,7-naphthyridine, quinoxaline and quinazoline, and A ₁₂ and A ₁₃ may be benzene, but are not limited thereto .

As another example, in the above formula (1), A ₁₁ and A ₁₄ independently of one another are benzene or naphthalene, and A ₁₂ and A ₁₃ may be benzene, but are not limited thereto.

As another example, in the above formula (1), A ₁₁ to A ₁₄ may be benzene, but are not limited thereto.

In Formula 1, X ₁₁ is _{O, S, C (R 17} ) (R 18), Si (R 17) (R 18), P (R 17), B (R 17), P (= O) ( R ₁₇₎ or _{N - [(L 12) a12} - (R 12) b12] may be, the description for R17, R18, L12, a12, b12 and R12, refer to what will be described later.

For example, In the formula 1, X ₁₁ is _{O, S, C (R 17} ) (R 18), Si (R 17) (R 18), P (R 17), B (R 17), P ( = O) (R ₁₇₎ or _{N - [(L 12) a12} - (R 12) b12] , and; R ₁₇ and R ₁₈ may optionally be connected to each other to form a saturated or unsaturated ring, but is not limited thereto.

As another example, In the formula 1, X ₁₁ is _{O, S, C (R 17} ) (R 18) or _{N - [(L 12) a12} - (R 12) b12] , but may be, but not limited to, .

In Formulas 1 and 2, L ₁₁ to L ₁₃ and L ₂₁ independently represent a substituted or unsubstituted C ₃ -C ₁₀ cycloalkylene group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkylene group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl alkenylene group, a substituted or unsubstituted C ₆ -C ₆₀ arylene group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, an unsubstituted 2-substituted or unsubstituted non-aromatic condensed polycyclic group, and a substituted or unsubstituted 2 non-aromatic heterocyclic is selected from the condensed polycyclic group;

The substituted C ₃ -C ₁₀ cycloalkylene group, the substituted C ₁ -C ₁₀ heterocycloalkylene group, the substituted C ₃ -C ₁₀ cycloalkenylene group, the substituted C ₁ -C ₁₀ heterocycloalkenylene group, the substituted At least _one substituent of the substituted C ₆ -C ₆₀ arylene group, the substituted C ₁ -C ₆₀ heteroarylene group, the substituted divalent non-aromatic condensed polycyclic group and the substituted divalent non-aromatic heterocyclic polycyclic group,

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group and a C ₁ -C ₆₀ alkoxy group;

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, or a salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocyclic condensed polycyclic group, -N (Q _{11) (Q 12), -Si (Q} 13) (Q 14) (Q 15) and _{-B (Q 16) (Q 17} ) of the at least one substituted, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl , A C ₂ -C ₆₀ alkynyl group and a C ₁ -C ₆₀ alkoxy group;

C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryl A C ₆ -C ₆₀ arylthio group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group and a monovalent non-aromatic heterocyclic polycyclic group;

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group, a C ₁ -C ₆₀ alkoxy group, a C ₃ -C ₁₀ cycloalkyl group, a C ₁ -C ₁₀ heterocyclo alkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ aryl come T, C ₁ - C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocyclic condensed polycyclic _{group, -N (Q 21) (Q} 22), -Si (Q 23) (Q 24) (Q 25) and _{-B (Q 26) (Q 27} ) of the at least one substituted, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkyl alkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ aryl come T, C ₁ -C ₆₀ H. Heteroaryl group, monovalent non-aromatic condensed polycyclic group and monovalent non-aromatic heterocyclic polycyclic group; And

_{-N (Q 31) (Q 32} ), -Si (Q 33) (Q 34) (Q 35) and _{-B (Q 36) (Q 37} ); ;

Q ₁ to Q _7, Q ₁₁ to Q _17, Q ₂₁ to Q ₂₇ and Q ₃₁ to Q ₃₇ are, each independently, hydrogen, C ₁ -C ₆₀ alkyl, C ₁ -C ₆₀ alkoxy group, C ₆ -C ₆₀ together An aryl group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic heterocyclic polycyclic group.

For example, in the general formulas (1) and (2), L ₁₁ to L ₁₃ and L ₂₁ independently represent a phenylene group, a pentalenylene group, an indenylene group, a naphthylene An acenaphthylene group, a fluorenylene group, a spiro-fluorenylene group, an acenaphthylene group, an acenaphthylene group, an acenaphthylene group, an azulenylene group, a heptolenylene group, an indacenylene group, A phenanthrene group, an anthracenylene group, a fluoranthenylene group, a triphenylene group, a phenanthrene group, a phenanthrene group, an anthracenylene group, a fluoranthenylene group, A perylene group, a triphenylene group, a pyrenylene group, a chrysenylene group, a naphthacenylene group, a picenylene group, a perylenylene group, pentaphenylene group, hexacenylene group, pentacenylene group, rubicenylene group, e) group, a coronenylene group, an ovalenylene group, a pyrrolylene group, a thiophenylene group, a furanylene group, an imidazolylene group, A pyrazolylene group, a thiazolylene group, an isothiazolylene group, an oxazolylene group, an isooxazolylene group, a pyridinylene group, a pyrazolylene group, A pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, an isoindolylene group, an indolylene group, an indazolylene group, a fullerene group, a quinolinylene group, an isoquinolinylene group, a benzoquinolinylene group, a phthalazinylene group, a naphthyridinylene group, a quinoxalinylene group, a quinolinylene group, a quinoxalinylene group, a quinazolinylene group, a cinnolinylene group, a carbazole A carbazolyl group, a carbazolylene group, a phenanthridinylene group, an acridinylene group, a phenanthrolinylene group, a phenazinylene group, a benzoimidazolylene group, An isobenzoyl group, a benzofuranylene group, a benzothiophenylene group, an isobenzothiazolylene group, a benzooxazolylene group, an isobenzooxazolylene group, a triazolylene group, A tetrazolylene group, an oxadiazolylene group, a triazinylene group, a dibenzofuranylene group, a dibenzothiophenylene group, a benzocarbazolylene group, And dibenzocarbazolylene groups; And

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₂₀ alkyl group, a C ₁ -C ₂₀ alkoxy group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclopentenyl group, a cyclohexenyl group, a phenyl group, a biphenyl group, An acenaphthyl group, a phenanthrenyl group, a phenanthrenyl group, a phenanthrenyl group, a phenanthrenyl group, a phenanthrenyl group, a phenanthrenyl group, a phenanthrenyl group, , Anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, naphthacenyl group, picenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, rubicenyl group, A thiophenyl group, a furanyl group, an imidazolyl group, an imidazolyl group, an imidazolyl group, an imidazolyl group, A thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, , A quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, a phenanthridinyl group, an acridinyl group, A benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a thiazolyl group, a thiazolyl group, A phenylene group, a pentalenylene group, an indenyl group substituted with at least one of a thiazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group and an imidazopyridinyl group, Naphthylene group, azulenylene group, Anthracenyl group, phenanthrenylene group, phenanthrenylene group, anthracenyl group, phenanthrenylene group, phenanthrenylene group, phenanthrenylene group, phenanthrenylene group, phenanthrenylene group, phenanthrenylene group, A naphthacenylene group, a phenanthrenylene group, a perylenylene group, a pentaphenylene group, a hexacenylene group, a pentachenylene group, a rubicecylene group, a naphthacenylene group, a phenanthrenyl group, A thiophenylene group, an imidazolylene group, a pyrazolylene group, a thiazolylene group, an isothiazolylene group, an oxazolylene group, an isoxazolylene group, a pyridinyl A thiophenylene group, a thienylthio group, a thienylthio group, a thienylthio group, a thienylthio group, a thienylthio group, a thiophene group, Phthalazinylene group, naphthyridinylene group, quinox A benzothiophenylene group, a benzothiophenylene group, a benzothiophenylene group, a benzothiophenylene group, a benzothiophenylene group, a benzothiophenylene group, a benzothiophenylene group, a benzothiophenylene group, a benzothiophenylene group, And examples thereof include a phenylene group, a phenylene group, an isobenzothiazolylene group, a benzooxazolylene group, an isobenzoxazolanylene group, a triazololylene group, a tetrazolylene group, an oxadiazoleisonylene group, a triazienylene group, a dibenzofuranylene group, a dibenzothiophenylene group, Carbazolylene group and dibenzocarbazolylene group; , But is not limited thereto.

As another example, in the general formulas (1) and (2), L ₁₁ to L ₁₃ and L ₂₁ independently represent a phenylene group, a naphthylene group, a fluorenylene group, a pyridinylene group, a pyrimidinylene group, a quinolinylene group, An isoquinolinylene group, a quinazolinylene group, a carbazolylene group, a triazylene group, a dibenzofuranylene group and a dibenzothiophenylene group; And

Wherein the substituent is selected from the group consisting of hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, a salt thereof, a C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy group, a phenyl group, a biphenyl group, a naphthyl group, a fluorenyl group, a spy-fluorenyl group, a fluorenyl group benzo, dibenzo-fluorenyl group, a phenanthrenyl A pyridinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, a quinazolinyl group, A phenylene group, a fluorenylene group, a pyridinylene group, a pyrimidinylene group, a quinolinylene group, an isoquinolinylene group, a quinazolinylene group, a carbazolyl group, Trialkynylene groups, dibenzofuranylene groups and dibenzothiophenylene groups; , But is not limited thereto.

As another example, in the above formulas (1) and (2), L ₁₁ to L ₁₃ and L ₂₁ may independently be a group selected from the following formulas (3-1) to (3-41), but are not limited thereto :

Of the above-mentioned formulas (3-1) to (3-41)

X ₃₁ is selected from O, S, N (R ₃₃ ) and C (R ₃₃ ) (R ₃₄ );

R ₃₁ to R ₃₄ independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, A sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a C ₁ -C ₂₀ alkyl group, a C ₁ -C ₂₀ alkoxy group, a phenyl group, a biphenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, A pyrenyl group, a pyridinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolyl group, a quinolyl group, a quinolyl group, a quinolyl group, A quinoxalinyl group, a quinazolinyl group, a carbazolyl group and a triazinyl group;

b31 is selected from 1, 2, 3 and 4;

b32 is selected from 1, 2, 3, 4, 5 and 6;

b33 is selected from 1, 2 and 3;

b34 is selected from 1 and 2;

b35 is selected from 1, 2, 3, 4 and 5;

* And * are independent sites of bonding to neighboring atoms.

As another example, in the above formulas (1) and (2), L ₁₁ to L ₁₃ and L ₂₁ independently of each other may be a group selected from the following formulas (4-1) to (4-57)

Among the above-mentioned formulas (4-1) to (4-57)

* And * are independent sites of bonding to neighboring atoms.

As another example, in the above formulas (1) and (2), L ₁₁ to L ₁₃ and L ₂₁ may be independently selected from the group consisting of the following formulas 4-1 to 4-6 and 4-50 to 4-57, But are not limited to:

Of the above-mentioned formulas 4-1 to 4-6 and 4-50 to 4-57,

* And * are independent sites of bonding to neighboring atoms.

In the above formula (1), a11 represents the number of L ₁₁ , and a11 may be selected from 0, 1, 2, 3, 4 and 5. If a11 is 0, (L _{11) a11;} means a single bond. When a11 is 2 or more, a plurality of L &lt; ₁₁ &gt; may be the same or different from each other. For example, in Formula 1, a11 may be selected from 0 and 1, but is not limited thereto.

In the above formulas (1) and (2), a12, a13 and a21 can be understood independently of each other with reference to the description of a11 and the above formulas (1) and (2).

In the above formulas (1) and (2), a12, a13 and a21 may be independently selected from 0, 1, 2, 3, 4 and 5. For example, in the above formulas (1) and (2), a12, a13 and a21 may be independently selected from 0 and 1, but are not limited thereto. As another example, in the above formula (1), a13 may be 0, but is not limited thereto.

In the general formulas (1) and (2), R ₁₁ , R ₁₂ and R ₂₁ independently represent a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, hwandoen C ₃ -C ₁₀ cycloalkenyl group, a substituted or unsubstituted C ₁ -C ₁₀ heteroaryl cycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl A substituted or unsubstituted monovalent non-aromatic heterocyclic polycyclic group, -N (Q ₁ ) (Q ₂ ), -Si (Q ₃ ) ( Q ₄ ) (Q ₅ ) and -B (Q ₆ ) (Q ₇ );

The substituted C ₃ -C ₁₀ cycloalkyl, substituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted C ₃ -C ₁₀ cycloalkenyl group, a substituted C ₁ -C ₁₀ heteroaryl cycloalkenyl group, a substituted C ₆ - C ₆₀ aryl group, a substituted C ₁ -C ₆₀ heteroaryl groups, substituted monovalent non-aromatic condensed polycyclic group, a substituted monovalent non-aromatic hydrocarbon ring at least one substituent of the condensed polycyclic group,

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group and a C ₁ -C ₆₀ alkoxy group;

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, or a salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocyclic condensed polycyclic group, -N (Q _{11) (Q 12), -Si (Q} 13) (Q 14) (Q 15) and _{-B (Q 16) (Q 17} ) of the at least one substituted, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl , A C ₂ -C ₆₀ alkynyl group and a C ₁ -C ₆₀ alkoxy group;

C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryl A C ₆ -C ₆₀ arylthio group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group and a monovalent non-aromatic heterocyclic polycyclic group;

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group, a C ₁ -C ₆₀ alkoxy group, a C ₃ -C ₁₀ cycloalkyl group, a C ₁ -C ₁₀ heterocyclo alkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ aryl come T, C ₁ - C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocyclic condensed polycyclic _{group, -N (Q 21) (Q} 22), -Si (Q 23) (Q 24) (Q 25) and _{-B (Q 26) (Q 27} ) of the at least one substituted, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkyl alkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ aryl come T, C ₁ -C ₆₀ H. Heteroaryl group, monovalent non-aromatic condensed polycyclic group and monovalent non-aromatic heterocyclic polycyclic group; And

_{-N (Q 31) (Q 32} ), -Si (Q 33) (Q 34) (Q 35) and _{-B (Q 36) (Q 37} ); ;

Q ₁ to Q _7, Q ₁₁ to Q _17, Q ₂₁ to Q ₂₇ and Q ₃₁ to Q ₃₇ are, each independently, hydrogen, C ₁ -C ₆₀ alkyl, C ₁ -C ₆₀ alkoxy group, C ₆ -C ₆₀ together An aryl group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic heterocyclic polycyclic group.

For example, in the general formulas (1) and (2), at least one of R ₁₁ and R ₁₂ is an electron transporting group; R ₂₁ may be a hole transporting group, but is not limited thereto.

As another example, at least one of R ₁₁ and R ₁₂ in the general formulas (1) and (2) is a hole transporting group; R ₂₁ may be an electron transporting group, but is not limited thereto.

As another example, R ₁₁ , R ₁₂ and R ₂₁ in the general formulas (1) and (2) are independently selected from the group consisting of a phenyl group, a pentalenyl group, an indenyl group, a naphthyl group, An acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorene group, an azulenyl group, a heptenyl group, an indacenyl group, an acenaphthyl group, A phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a phenanthrenyl group, a phenanthryl group, an anthracenyl group, A naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a naphthacenyl group, a naphthacenyl group, A rubicenyl group, a coronenyl group, an ovalenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, an imidazolyl group, An imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isooxazolyl group, a pyridinyl group, an imidazolyl group, an imidazolyl group, A pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, an imidazolyl group, A carbamoyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group A quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenanthrolinyl group, a phenanthrolinyl group, A phenanthroline group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, a benzothiazolyl group, an isobenzothiazolyl group, an isobenzooxazolyl group, an isobenzooxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, an imidazolyl group, A triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, An imidazopyridinyl group, an imidazopyrimidinyl group, a pyridobenzofuranyl group, a pyrimidobenzofuranyl group, a pyridobenzothiophenyl group, an imidazopyridinyl group, an imidazopyrimidinyl group, A pyrimidobenzothiophenyl group, a thianthrenyl group, a phenoxathiinyl group, a dibenzodioxinyl group and -N (Q ₁ ) (Q ₂ ); And

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₂₀ alkyl group, a C ₁ -C ₂₀ alkoxy group, a phenyl group, a biphenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, an hethtalenyl group, A phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a thienyl group, a thienyl group, a thienyl group, A thiophene group, a furanyl group, an imidazolyl group, an imidazolyl group, an imidazolyl group, an imidazolyl group, an imidazolyl group, an imidazolyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coronenyl group, A pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, A pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a pyridyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, A phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, a benzothiophenyl group, a benzothiophenyl group, a benzothiophenyl group, a benzothiophenyl group, Benzothiazolyl group, benzothiazolyl group, dibenzothiophenyl group, dibenzothiophenyl group, dibenzothiophenyl group, dibenzothiophenyl group, dibenzothiophenyl group, dibenzothiophenyl group, benzothiazolyl group, benzothiazolyl group, benzothiazolyl group, A phenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, an heptalenyl group, a pivaloyl group, a pivaloyl group, a pivaloyl group, a pivaloyl group, a carbazolyl group, a dibenzocarbazolyl group and -Si (Q ₃₃ ) (Q ₃₄ ) (Q ₃₅ ) An indanecyl group, an acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, A phenanthryl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a klycenyl group, a naphthacenyl group, a phenenyl group, a phenanthryl group, a phenanthryl group, A thiazolyl group, a thiazolyl group, a thiazolyl group, a thiazolyl group, a thiazolyl group, an isothiazole group, a thiazolyl group, a thiazolyl group, a thiazolyl group, a thiazolyl group, a thiazolyl group, A pyridinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a pyridyl group, a quinolinyl group, an isoquinolinyl group, an isoxazolyl group, an isoxazolyl group, A carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, Diazo, benzofuranyl, benzothiophenyl, benzothiazolyl, A thiazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzoylsilyl group, a benzooxazolyl group, a benzooxazolyl group, a benzooxazolyl group, An imidazopyrimidinyl group, an imidazopyrimidinyl group, a pyridobenzofuranyl group, a pyrimidobenzofuranyl group, a pyridobenzothiophenyl group, a pyrimidobenzothiophenyl group, a thianthrenyl group, an imidazopyrimidinyl group, an imidazopyrimidinyl group, A phenoxatinyl group and a dibenzodioxinyl group; ;

Q ₁ , Q ₂ and Q ₃₃ to Q ₃₅ are, independently of one another, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, a monovalent non-aromatic condensed polycyclic group and a monovalent non-aromatic heterocyclic polycyclic group But is not limited thereto.

As another example, in the general formulas (1) and (2), R ₁₁ , R ₁₂ and R ₂₁ independently represent a phenyl group, a naphthyl group, a fluorenyl group, a phenanthrenyl group, an anthracenyl group, a triphenylenyl group, , A pyrazinyl group, a pyrimidinyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a phenanthridinyl group, A benzothiophenyl group, a triazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, an imidazopyrimidinyl group, an imidazopyrimidinyl group, a pyrimidinyl group, a pyrimidinyl group, A pyrimidobenzothiophenyl group, a pyrimidobenzothiophenyl group, a thienthrenyl group, a phenoxathiinyl group, a dibenzodioxinyl group and -N (Q ₁ ) (Q ₂ ); And

Heavy hydrogen, -F, -Cl, -Br, -I, cyano, nitro, C ₁ -C ₂₀ alkyl group, a phenyl group, a biphenyl group, a naphthyl group, a fluorenyl group, carbazole group, a dibenzo furanoid group, a dibenzo A phenanthrenyl group, an anthracenyl group, a triphenylenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group substituted with at least one of -Si (Q ₃₃ ) (Q ₃₄ ) (Q ₃₅ ) A phenanthrolinyl group, a phenanthryl group, a phenanthrolinyl group, a phenanthryl group, a phenanthryl group, a phenanthryl group, a phenanthryl group, a phenanthryl group, a phenanthryl group, a phenanthryl group, Benzimidazolyl group, benzofuranyl group, benzothiophenyl group, triazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, imidazopyridinyl group, imidazopyrimidinyl group, pyridobenzofuranyl group, A pyridobenzothiophenyl group, a pyrimidobenzothiophenyl group, a thianthrenyl group, A phenoxatinyl group and a dibenzodioxinyl group; ;

Q ₁ , Q ₂ and Q ₃₃ to Q ₃₅ are each independently selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, A phenyl group, a biphenyl group, a naphthyl group and a fluorenyl group, but is not limited thereto.

As another example, in the general formulas (1) and (2), R ₁₁ , R ₁₂ and R ₂₁ independently of each other may be a group selected from the following formulas (5-1) to (5-58)

Of the above formulas (5-1) to (5-58)

X ₅₁ is a single bond, N (R ₅₄ ), C (R ₅₄ ) (R ₅₅ ), O and S;

X ₅₂ is selected from N (R ₅₆ ), C (R ₅₆ ) (R ₅₇ ), O and S;

R ₅₁ to R ₅₇ independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, cyano, nitro, C ₁ -C ₂₀ alkyl, phenyl, biphenyl, naphthyl, , carbazole group, a dibenzo furanoid group, a thiophenyl group is selected from dibenzothiophene, and _{-Si (Q 33) (Q 34} ) (Q 35);

Q ₁ , Q ₂ and Q ₃₃ to Q ₃₅ are each independently selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, A phenyl group, a biphenyl group, a naphthyl group and a fluorenyl group;

b51 is selected from 1, 2, 3, 4 and 5;

b52 is selected from 1, 2, 3, 4, 5, 6 and 7;

b53 is selected from 1, 2, and 3;

b54 is selected from 1, 2, 3 and 4;

b55 is selected from 1, 2, 3, 4, 5 and 6;

* Is the binding site with neighboring atoms.

As another example, at least one of R ₁₁ and R ₁₂ in the general formulas (1) and (2) is selected from the above formulas (5-13) to (5-57); R ₂₁ may be selected from among the above formulas 5-1 to 5-12 and 5-58, but is not limited thereto.

As another example, at least one of R ₁₁ and R ₁₂ in the above formulas (1) and (2) is selected from the above formulas (5-1) to (5-12) and (5-58); R ₂₁ may be selected from the following formulas (5-13) to (5-57), but is not limited thereto.

As another example, R ₁₁ , R _12, and R ₂₁ in the general formulas (1) and (2) may independently be selected from the following formulas (6-1) to (6-138), but are not limited thereto:

Of the above formulas (6-1) to (6-138)

t-Bu means tert-butyl group;

Ph means a phenyl group;

* Is the binding site with neighboring atoms.

As another example, at least one of R ₁₁ and R ₁₂ in the above formulas (1) and (2) is selected from the above formulas (6-52) to (6-134); R ₂₁ may be selected from among the above formulas (6-1) to (6-51) and (6-135) to (6-138), but is not limited thereto.

As another example, at least one of R ₁₁ and R ₁₂ in the general formulas (1) and (2) is selected from among the formulas (6-1) to (6-51) and (6-135) to (6-138). R ₂₁ may be selected from among the above formulas (6-52) to (6-134), but is not limited thereto.

In the formula 1, and b11 represents the number of R _11, b11 may be selected from 1, 2, 3 and 4. When b11 is 2 or more, a plurality of R &lt; ₁₁ &gt; may be the same or different from each other. For example, in Formula 1, b11 may be selected from 1 and 2, but is not limited thereto.

In the above formulas (1) and (2), b12 and b21 independently of each other can be understood with reference to the description of b11 and the above formulas (1) and (2).

In the above formulas (1) and (2), b12 and b21 may be independently selected from 1, 2, 3 and 4. For example, in the above formulas (1) and (2), b12 and b21 may be independently selected from 1 and 2, but are not limited thereto.

Wherein R ₁₃ to R ₁₈ and R ₂₂ to R ₂₄ independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, , A substituted or unsubstituted C ₁ -C ₆₀ alkyl group, a substituted or unsubstituted C ₂ -C ₆ alkoxy group, a substituted or unsubstituted C ₁ -C ₆ alkoxy group, a substituted or unsubstituted C ₁ -C ₆ alkoxy group, ₆₀ alkenyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkynyl group, a substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, a substituted or unsubstituted C ₁ -C ₁₀ heteroaryl cycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, a substituted or unsubstituted C ₆ -C ₆₀ arylthio group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl ah Group, a substituted or unsubstituted 1, a non-condensed polycyclic aromatic heterocyclic group is selected from the aromatic condensed polycyclic group, and a substituted or unsubstituted monovalent ratio;

The substituted C ₁ -C ₆₀ alkyl group, the substituted C ₂ -C ₆₀ alkenyl group, the substituted C ₂ -C ₆₀ alkynyl group, the substituted C ₁ -C ₆₀ alkoxy group, the substituted C ₃ -C ₁₀ cycloalkyl group, substituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted C ₃ -C ₁₀ cycloalkenyl group, a substituted C ₁ -C ₁₀ heteroaryl cycloalkenyl group, a substituted C ₆ -C ₆₀ aryl, substituted C ₆ -C the aromatic heterocyclic group condensed _{polycyclic-60} aryloxy group, a substituted C ₆ -C ₆₀ arylthio group, a substituted C ₁ -C ₆₀ heteroaryl group, a substituted a non-aromatic condensed polycyclic group, a substituted monovalent non- The at least one substituent may be,

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group and a C ₁ -C ₆₀ alkoxy group;

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, or a salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocyclic condensed polycyclic group, -N (Q _{11) (Q 12), -Si (Q} 13) (Q 14) (Q 15) and _{-B (Q 16) (Q 17} ) of the at least one substituted, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl , A C ₂ -C ₆₀ alkynyl group and a C ₁ -C ₆₀ alkoxy group;

C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryl A C ₆ -C ₆₀ arylthio group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group and a monovalent non-aromatic heterocyclic polycyclic group;

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group, a C ₁ -C ₆₀ alkoxy group, a C ₃ -C ₁₀ cycloalkyl group, a C ₁ -C ₁₀ heterocyclo alkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ aryl come T, C ₁ - C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocyclic condensed polycyclic _{group, -N (Q 21) (Q} 22), -Si (Q 23) (Q 24) (Q 25) and _{-B (Q 26) (Q 27} ) of the at least one substituted, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkyl alkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ aryl come T, C ₁ -C ₆₀ H. Heteroaryl group, monovalent non-aromatic condensed polycyclic group and monovalent non-aromatic heterocyclic polycyclic group; And

_{-N (Q 31) (Q 32} ), -Si (Q 33) (Q 34) (Q 35) and _{-B (Q 36) (Q 37} ); ;

Q ₁ to Q _7, Q ₁₁ to Q _17, Q ₂₁ to Q ₂₇ and Q ₃₁ to Q ₃₇ are, each independently, hydrogen, C ₁ -C ₆₀ alkyl, C ₁ -C ₆₀ alkoxy group, C ₆ -C ₆₀ together An aryl group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic heterocyclic polycyclic group.

For example, in the general formulas (1) and (2), R ₁₃ to R ₁₈ and R ₂₂ to R ₂₄ independently represent hydrogen, a methyl group, an ethyl group, a n-propyl group, a n-butyl group, a phenyl group, a naphthyl group, A pyrenyl group, a phenanthrenyl group, a fluorenyl group and a carbazolyl group; And

A phenyl group, a naphthyl group, an anthryl group, a pyrenyl group, a phenanthrenyl group, a pyrenyl group, a pyrenyl group, a pyrenyl group, a pyrenyl group, a pyrenyl group, a pyrenyl group, and a pyrenyl group, which are substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, cyano, nitro, A fluorenyl group and a carbazolyl group; , But is not limited thereto.

As another example, in the general formulas (1) and (2), R ₁₃ to R ₁₈ and R ₂₂ to R ₂₄ independently of each other may be selected from among hydrogen, a methyl group, a phenyl group, a naphthyl group and a carbazolyl group, but are not limited thereto .

As another example, in the general formulas (1) and (2), R ₁₃ to R ₁₈ and R ₂₂ to R ₂₄ may be hydrogen, but are not limited thereto.

In the formula 1, and b13 represents the number of R _13, b13 may be selected from 1, 2, 3 and 4. If more than b13 is 2, a plurality of R ₁₃ s may be the same or different from each other.

In the above formulas (1) and (2), b14 to b16 and b22 to b24 may be understood independently of each other with reference to the description of b11 and the above formulas (1) and (2).

In the above formulas (1) and (2), b14 to b16 and b22 to b24 may be independently selected from 1, 2, 3 and 4.

For example, the first host may be represented by the following Formula 1-1, but is not limited thereto:

&Lt; Formula 1-1 >

In Formula 1-1,

A ₁₁ to A ₁₄ , X ₁₁ , L ₁₁ , a ₁₁ , R _11, and b ₁₁ refer to the above-mentioned.

As another example, the first host may be represented by any one of the following formulas 1-11 to 1-26, but is not limited thereto:

Among the above formulas 1-1 to 1-26,

A ₁₁ to A ₁₄ , X ₁₁ , L ₁₁ , a ₁₁ , R _11, and b ₁₁ refer to the above-mentioned.

For example, the second host may be represented by the following Formula 2-1, but is not limited thereto:

&Lt; Formula (2-1)

In the above formula (2-1)

L _21, a21, R ₂₁ and b21, see the foregoing.

As another example, the second host may be represented by any one of the following Formulas 2-11 and 2-12, but is not limited thereto:

Of the above formulas 2-11 and 2-12,

L _21, a21, R ₂₁ and b21, see the foregoing.

As another example, the first host is represented by any one of the following formulas 1-11 to 1-26; The second host may be represented by any one of the following formulas (2-11) and (2-12), but is not limited thereto:

Of the above formulas 1-11 to 1-26, 2-11 and 2-12,

A ₁₁ and A ₁₄ are each independently selected from the group consisting of benzene, naphthalene, pyridine, pyrimidine, quinoline, isoquinoline, 2,6-naphthyridine, 1,8-naphthyridine, 6-naphthyridine, 1,7-naphthyridine, 2,7-naphthyridine, quinoxaline, phthalazine, quinazoline and cininone;

X ₁₁ is _{O, S, C (R 17} ) (R 18), Si (R 17) (R 18), P (R 17), B (R 17), P (= O) (R 17) or N _{- [(L 12) a12 -} (R 12) b12] , and;

L ₁₁ , L ₁₂ and L ₂₁ are independently of each other a group selected from the following formulas (4-1) to (4-6) and (4-50) to (4-57);

Of the above-mentioned formulas 4-1 to 4-6 and 4-50 to 4-57,

* And * are independently from each other a bonding site with a neighboring atom;

a11, a12 and a21 are independently selected from 0, 1, 2, 3, 4 and 5;

R ₁₁ , R ₁₂ and R ₂₁ independently represent a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C ₃ -C ₁₀ A substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted aryl group, A substituted or unsubstituted monovalent non-aromatic heterocyclic polycyclic group, -N (Q ₁ ) (Q ₂ ), -Si (Q ₃ ) (Q ₄ ) (Q ₅ ) And -B (Q ₆ ) (Q ₇ )

At least one of R ₁₁ and R ₁₂ is selected from the following formulas (6-52) to (6-134); R ₂₁ is selected from the following formulas (6-1) to (6-51) and (6-135) to (6-138);

Of the above formulas (6-1) to (6-138)

t-Bu means tert-butyl group;

Ph means a phenyl group;

* Is the binding site with neighboring atoms;

b11, b12 and b21 are independently selected from 1, 2, 3 and 4;

R ₁₇ and R ₁₈ independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C ₁ -C ₆₀ alkyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, a substituted or unsubstituted C ₂ -C _A substituted or unsubstituted C ₁ -C ₆ alkynyl group, a substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C _A substituted or unsubstituted C ₁ -C ₁₀ cycloalkenyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, A substituted or unsubstituted C ₆ -C ₆₀ arylthio group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted monovalent non-aromatic A condensed polycyclic group and a substituted or unsubstituted monovalent non-aromatic heterocyclic polycyclic group;

Q ₁ to Q ₇ independently represent hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₁ -C ₆₀ alkoxy group, a C ₆ -C ₆₀ aryl group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensation Polycyclic groups and monovalent non-aromatic heterocyclic polycyclic groups.

As another example, the first host is represented by any one of the following formulas 1-11 to 1-26;

The second host may be represented by any one of the following formulas (2-11) and (2-12), but is not limited thereto:

Of the above formulas 1-11 to 1-26, 2-11 and 2-12,

A ₁₁ and A ₁₄ are each independently selected from the group consisting of benzene, naphthalene, pyridine, pyrimidine, quinoline, isoquinoline, 2,6-naphthyridine, 1,8-naphthyridine, 6-naphthyridine, 1,7-naphthyridine, 2,7-naphthyridine, quinoxaline, phthalazine, quinazoline and cininone;

X ₁₁ is _{O, S, C (R 17} ) (R 18), Si (R 17) (R 18), P (R 17), B (R 17), P (= O) (R 17) or N _{- [(L 12) a12 -} (R 12) b12] , and;

L ₁₁ , L ₁₂ and L ₂₁ are independently of each other a group selected from the following formulas (4-1) to (4-6) and (4-50) to (4-57);

Of the above-mentioned formulas 4-1 to 4-6 and 4-50 to 4-57,

* And * are independently from each other a bonding site with a neighboring atom;

a11, a12 and a21 are independently selected from 0, 1, 2, 3, 4 and 5;

R ₁₁ , R ₁₂ and R ₂₁ independently represent a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C ₃ -C ₁₀ A substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted aryl group, A substituted or unsubstituted monovalent non-aromatic heterocyclic polycyclic group, -N (Q ₁ ) (Q ₂ ), -Si (Q ₃ ) (Q ₄ ) (Q ₅ ) and _{-B (Q 6) (Q 7} ) doedoe selected from, R ₁₁ and R ₁₂ at least one of which is, to the general formula is selected from 6-1 to 6-51 and 6-135 to 6-138, R ₂₁ to the Is selected from formulas 6-52 to 6-134;

Of the above formulas (6-1) to (6-138)

t-Bu means tert-butyl group;

Ph means a phenyl group;

* Is the binding site with neighboring atoms;

b11, b12 and b21 are independently selected from 1, 2, 3 and 4;

R ₁₇ and R ₁₈ independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C ₁ -C ₆₀ alkyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, a substituted or unsubstituted C ₂ -C _A substituted or unsubstituted C ₁ -C ₆ alkynyl group, a substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C _A substituted or unsubstituted C ₁ -C ₁₀ cycloalkenyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, A substituted or unsubstituted C ₆ -C ₆₀ arylthio group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted monovalent non-aromatic A condensed polycyclic group and a substituted or unsubstituted monovalent non-aromatic heterocyclic polycyclic group;

Q ₁ to Q ₇ independently represent hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₁ -C ₆₀ alkoxy group, a C ₆ -C ₆₀ aryl group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensation Polycyclic groups and monovalent non-aromatic heterocyclic polycyclic groups.

As another example, the first host may be selected from among the following compounds 101A to 206A, and the second host may be selected from among the following compounds 301A to 342A:

As another example, the first host may be selected from among the following compounds 101B to 230B, and the second host may be selected from among the following compounds 301B to 345B, but is not limited thereto:

Factors affecting the efficiency and lifetime of the organic light emitting device include: i) whether electrons and holes in the light emitting layer are balanced; And ii) whether the luminescent region in the luminescent layer does not deviate toward the hole transporting layer or the electron transporting layer and is widely distributed in the luminescent layer.

When one kind of material is used as a host in the light emitting layer, it is difficult to satisfy all of the above requirements. To satisfy all of the above requirements, a) two or more materials may be used as a host, and b) the substituent characteristics of the two or more materials may be different.

(I) when the first host comprises an electron transporting group, the second host comprises a hole transporting group, or (ii) the light emitting layer comprises a hole transporting group, ) If the first host includes a hole transporting group, the second host may include an electron transporting agent to help improve the efficiency and lifetime of the organic light emitting device.

In one embodiment, the second host comprising the hole transporting group may have a relatively wide energy gap, and the first host comprising the electron transporting group may have a relatively narrow energy gap. In this case, the second host can effectively control the electron transporting property of the first host, prevents the concentration of the light emitting region of the light emitting layer at the interface between the hole transporting layer and the light emitting layer, Can be improved.

The weight ratio of the first host to the second host may be 1:10 to 10: 1. For example, the weight ratio of the first host to the second host may be 1: 9 to 9: 1. As another example, the weight ratio of the first host to the second host may be 2: 8 to 8: 2, 3: 7 to 7: 3, or 5: 5, but is not limited thereto.

In one embodiment, if the first host comprises a relatively strong electron transporting group (e.g., triazine), improved efficiency and lifetime characteristics can be obtained when a second host comprising a hole transporting group is used And when the second host including the hole transporting group is included in a large amount, it can exhibit optimum efficiency and lifetime.

In another embodiment, if the first host comprises a weak electron transporting group (e.g., pyridine or pyrimidine), improved efficiency and lifetime characteristics can be obtained when a second host comprising a hole transporting group is used And when the second host including the hole transporting group is included in a small amount, the optimal efficiency and lifetime can be exhibited.

As described above, the weight ratio of the first host to the second host may vary depending on the electrical characteristics of the first host and the second host.

The dopant may be a phosphorescent dopant.

The phosphorescent dopant may be at least one selected from the group consisting of Ir, Pt, Os, Ti, Zr, Hf, Eu, (Rhodium) and Cu (copper).

The phosphorescent dopant may include an organometallic complex represented by the following formula (401): &lt; EMI ID =

&Lt; Formula 401 >

In the above formula (401)

M is selected from iridium (Ir), platinum (Pt), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb) and thorium (TM);

X ₄₀₁ to X ₄₀₄ independently represent a nitrogen atom or a carbon atom;

The A ₄₀₁ and A ₄₀₂ rings may be, independently of one another, substituted or unsubstituted benzene, substituted or unsubstituted naphthalene, substituted or unsubstituted fluorene, substituted or unsubstituted spirofluorene, substituted or unsubstituted indene Substituted or unsubstituted thiophenes, substituted or unsubstituted thiophenes, substituted or unsubstituted furan, substituted or unsubstituted imidazoles, substituted or unsubstituted pyrazoles, substituted or unsubstituted thiols, substituted or unsubstituted thiophenes, Substituted or unsubstituted thiazoles, substituted or unsubstituted isothiazoles, substituted or unsubstituted oxazoles, substituted or unsubstituted isoxazoles, substituted or unsubstituted pyridines, substituted or unsubstituted pyrazines, substituted or unsubstituted pyrimidines, Substituted or unsubstituted quinoxaline, substituted or unsubstituted quinazoline, substituted or unsubstituted quinazoline, substituted or unsubstituted quinazoline, substituted or unsubstituted quinazoline, substituted or unsubstituted quinazoline, substituted or unsubstituted quinazoline, Substituted or unsubstituted benzoimidazoles, substituted or unsubstituted benzofuran, substituted or unsubstituted benzothiophenes, substituted or unsubstituted isobenzothiophenes, substituted or unsubstituted benzothiophenes, substituted or unsubstituted benzothiophenes, Substituted or unsubstituted benzoxazole, substituted or unsubstituted benzoxazole, substituted or unsubstituted isobenzoxazole, substituted or unsubstituted triazole, substituted or unsubstituted oxadiazole, substituted or unsubstituted triazine, substituted or unsubstituted dibenzofuran, And substituted or unsubstituted dibenzothiophene;

The substituted benzene, substituted naphthalene, substituted fluorene, substituted spiro-fluorene, substituted indene, substituted pyrrole, substituted thiophene, substituted furan, substituted imidazole, substituted pyrazole, Substituted thiazoles, substituted thiazoles, substituted isothiazoles, substituted oxazoles, substituted isoxazoles, substituted pyridines, substituted pyrazines, substituted pyrimidines, substituted pyridazines, substituted quinolines, substituted isoquinolines, Substituted quinoxaline, substituted quinazoline, substituted carbazole, substituted benzoimidazole, substituted benzofuran, substituted benzothiophene, substituted isobenzothiophene, substituted benzoxazole, substituted iso At least one substituent of the benzooxazole, the substituted triazole, the substituted oxadiazole, the substituted triazine, the substituted dibenzofuran and the substituted dibenzothiophene,

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group and a C ₁ -C ₆₀ alkoxy group;

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, or a salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocyclic condensed polycyclic group, -N (Q _{401) (Q 402), -Si (Q} 403) (Q 404) (Q 405) and _{-B (Q 406) (Q 407} ) of the at least one substituted, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl , A C ₂ -C ₆₀ alkynyl group and a C ₁ -C ₆₀ alkoxy group;

C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryl A C ₆ -C ₆₀ arylthio group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group and a monovalent non-aromatic heterocyclic polycyclic group;

A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group, a C ₁ -C ₆₀ alkoxy group, a C ₃ -C ₁₀ cycloalkyl group, a C ₁ -C ₁₀ heterocyclo alkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ aryl come T, C ₁ - C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocyclic condensed polycyclic _{group, -N (Q 411) (Q} 412), -Si (Q 413) (Q 414) (Q 415) A C ₃ -C ₁₀ cycloalkyl group, a C ₃ -C ₁₀ heterocycloalkyl group, a C ₃ -C ₁₀ cycloalkenyl group, a C ₁ -C ₁₀ heterocycloalkyl group substituted with at least one of -B (Q ₄₁₆ ) (Q ₄₁₇ ) alkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ aryl come T, C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group and a monovalent non-aromatic heterocyclic polycyclic group; And

Q ₄₂₁ , Q ₄₂₂ , Q ₄₂₃ , Q ₄₂₄ , Q ₄₂₅ , and -B Q ₄₂₆ , Q ₄₂₇ ; ;

L ₄₀₁ is an organic ligand;

xc1 is 1, 2 or 3;

xc2 is 0, 1, 2 or 3;

The L ₄₀₁ may be any monovalent, divalent or trivalent organic ligand. For example, L ₄₀₁ may be a halogen ligand (e.g. Cl, F), a diketone ligand (e.g., acetylacetonate, 1,3-diphenyl-l, 3- propanedionate, 6,6-tetramethyl-3,5-heptanedionate, hexafluoroacetonate), carboxylic acid ligands (e.g., picolinate, dimethyl-3-pyrazolecarboxylate, benzoate), carbon But are not limited to, monooxide ligands, isonitrile ligands, cyano ligands, and phosphorus ligands (e.g., phosphine, phosphaite).

If the formula of A 401 ₄₀₁ is to have two or more substituents, bonded to each other at least two substituents of A ₄₀₁ can form a saturated or unsaturated ring.

If the formula of A 401 ₄₀₂ is to have two or more substituents, bonded to each other at least two substituents of A ₄₀₂ can form a saturated or unsaturated ring.

는 서로 동일하거나 상이할 수 있다. 상기 화학식 401 중 xc1이 2 이상일 경우, A₄₀₁ 및 A₄₀₂는 각각 이웃하는 다른 리간드의 A₄₀₁ 및 A₄₀₂와 각각 직접(directly) 또는 연결기(예를 들면, C₁-C₅알킬렌, -N(R')-(여기서, R'은 C₁-C₁₀알킬기 또는 C₆-C₂₀아릴기임) 또는 -C(=O)-)를 사이에 두고 연결될 수 있다.When xc1 in Formula 401 is 2 or more, a plurality of ligands of Formula 401

May be the same or different from each other. If the formula xc1 401 is 2 or more of, A ₄₀₁ and A ₄₀₂ are each of the other ligands neighboring A and ₄₀₁ respectively direct and A ₄₀₂ (directly) or linking group (e.g., C ₁ -C ₅ alkylene, -N (R ') - (wherein, R' - may be connected across a) is C ₁ -C ₁₀ alkyl or C ₆ -C ₂₀ aryl group), or -C (= O).

As another example, M in Formula 401 may be selected from iridium (Ir), platinum (Pt), and osmium (Os), but is not limited thereto.

The phosphorescent dopant may include, but is not limited to, at least one of the following compounds PD1 to PD82:

The content of the dopant in the light emitting layer may be selected from the range of about 0.01 to about 15 parts by weight per 100 parts by weight of the host (i.e., the total sum of the first host and the second host), but is not limited thereto .

The thickness of the light emitting layer may be about 100 Å to about 1000 Å, for example, about 200 Å to about 600 Å. When the thickness of the light-emitting layer satisfies the above-described range, it is possible to exhibit excellent light-emitting characteristics without substantial increase in driving voltage.

The electron transport region may include at least one of a hole blocking layer, an electron transport layer (ETL), and an electron injection layer, but is not limited thereto.

For example, the electron transporting region may have a structure of an electron transporting layer / electron injecting layer or a hole blocking layer / electron transporting layer / electron injecting layer stacked sequentially from the light emitting layer, but the present invention is not limited thereto.

The electron transporting region may include a hole blocking layer. The hole blocking layer may be formed to prevent the triplet excitons or holes from diffusing into the electron transporting layer when the light emitting layer is a phosphorescent dopant.

When the electron transporting region includes a hole blocking layer, a vacuum evaporation method, a spin coating method, a casting method, an LB method (Langmuir-Blodgett), an inkjet printing method, a laser printing method, a laser induced thermal imaging (LITI) The hole blocking layer may be formed on the light emitting layer. When the hole blocking layer is formed by the vacuum deposition method and the spin coating method, the deposition conditions and the coating conditions of the hole blocking layer refer to the deposition conditions and the coating conditions of the hole injection layer.

The hole blocking layer may include, for example, at least one of the following BCP and Bphen, but is not limited thereto.

The thickness of the hole blocking layer may be about 20 Å to about 1000 Å, for example, about 30 Å to about 300 Å. When the thickness of the hole blocking layer satisfies the above-described range, excellent hole blocking characteristics can be obtained without increasing the driving voltage substantially.

The electron transporting region may include an electron transporting layer. The electron transport layer may be formed using various methods such as vacuum deposition, spin coating, casting, LB method, inkjet printing, laser printing, and laser induced thermal imaging (LITI) And may be formed on the light emitting layer or on the hole blocking layer. When the electron transport layer is formed by the vacuum deposition method and the spin coating method, the deposition conditions and the coating conditions of the electron transport layer refer to the deposition conditions and coating conditions of the hole injection layer.

The electron transport layer may further include at least one of the BCP, BPhen, and to Alq _3, Balq, TAZ and NTAZ.

Alternatively, the electron transporting layer may include at least one of the compounds represented by the following formula (601):

<Formula 601>

Ar ₆₀₁ - [(L ₆₀₁ ) _{xe 1} -E ₆₀₁ ] _{xe 2}

In the above formula (601)

Ar ₆₀₁ is a naphthalene, heptalene, fluorenene, spiro-fluorene, benzofluorene, dibenzofluorene, phenalene, phenanthrene, anthracene ), Fluoranthene, triphenylene, pyrene, chrysene, naphthacene, picene, perylene, pentaphene, And indenoanthracene;

Wherein the substituent is selected from the group consisting of hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, A salt thereof, a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group, a C ₁ -C ₆₀ alkoxy group, a C ₃ -C ₁₀ cycloalkyl group, a C ₁ -C ₁₀ heterocycloalkyl group , C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ aryl come T, C ₁ -C ₆₀ hetero aryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocyclic group and the condensed polycyclic _{-Si (Q 301) (Q 302} ) (Q 303) ( Q ₃₀₁ to Q ₃₀₃ are the independently from each other, Aromatic heterocyclic polycyclic group and a monovalent non-aromatic heterocyclic group, each of which is optionally substituted with _{one or more} substituents selected from the group consisting of hydrogen, C ₁ -C ₆₀ alkyl groups, C ₂ -C ₆₀ alkenyl groups, C ₆ -C ₆₀ aryl groups, C ₁ -C ₆₀ heteroaryl groups, Selected from a polycyclic group) A substituted or unsubstituted aliphatic hydrocarbon group such as a substituted naphthalene, heptalene, fluorene, spiro-fluorene, benzofluorene, dibenzofluorene, phenalene, phenanthrene, anthracene, fluoranthene, triphenylene, , Picene, perylene, pentaphene and indenoanthracene; ;

For a description of L ₆₀₁ , see the discussion of L ₂₀₁ herein;

E ₆₀₁ is a pyrrolyl, thiophenyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, isothiazolyl, isothiazolyl, , Isoxazolyl, isooxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, isoindolyl, isoindolyl, isoindolyl, Indolyl, indazolyl, purinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, benzoquinolinyl, benzoquinolinyl, Naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, carbazolyl group, phenanthridinyl group, acridinyl group, naphthyridyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, quinazolinyl group, cinnolinyl group, carbazolyl group, phenanthridinyl group, Phenanthrolinyl group, phenazinyl group, benzoimidazolyl group, benzofuranyl group (b benzofuran, benzofuran, benzofuran, benzofuran, benzofuran, benzofuran, benzofuran, benzofuran, benzofuran, benzofuran, benzofuran, enzofuranyl, benzothiophenyl, isobenzothiazolyl, benzooxazolyl, isobenzooxazolyl, triazolyl, tetrazolyl, oxadiazolyl ), Triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl and dibenzocarbazolyl groups; And

Wherein the substituent is selected from the group consisting of hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, a salt thereof, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy group, a phenyl group, a pen Frontale group, an indenyl group, a naphthyl group, an azulenyl group, a heptyl group Frontale, indazol hexenyl group, an acetoxy-naphthyl group, a fluorenyl group, A phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, a thienyl group, A thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a pyrazolyl group, a pyrazolyl group, a pyrazolyl group, a pyrazolyl group, a pyrazolyl group, a pyrazolyl group, A thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, A pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a pyridyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, A phenanthrolinyl group, a phenanthryl group, a benzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazole group, a benzofuranyl group, Substituted with at least one of a hydrogen atom, an alkyl group, a halogen atom, a nitro group, a diazo group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group and a dibenzocarbazolyl group , Pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl An isoindolyl group, an indolyl group, A quinolinyl group, a quinolizinyl group, a carbazolyl group, a phenanthridinyl group, a phenanthridinyl group, a phenanthridinyl group, a benzothiazolyl group, A benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, a tetrazolyl group, a tetrahydrothiazolyl group, an imidazolyl group, An oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group and a dibenzocarbazolyl group; ;

xe1 is selected from 0, 1, 2 and 3;

xe2 is selected from 1, 2, 3 and 4.

Alternatively, the electron transporting layer may include at least one of compounds represented by the following formula (602):

<Formula 602>

In the above formula (602)

₆₁₁ X is N or _{C- (L 611) xe611 -R 611} , X 612 is N or _{C- (L 612) xe612 -R 612} , X 613 is N or C- (L _{613) xe613} -R _613, and , At least one of X ₆₁₁ to X ₆₁₃ is N;

For a description of each of L ₆₁₁ to L ₆₁₆ , refer to the description of L ₂₀₁ in this specification;

R ₆₁₁ to R ₆₁₆ , independently of each other,

A phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a klychenyl group, a pyridinyl group, , A pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group and a triazinyl group; And

Wherein the substituent is selected from the group consisting of hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, A C ₁ -C ₂₀ alkyl group, a C ₁ -C ₂₀ alkoxy group, a phenyl group, a naphthyl group, an azulenyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, A pyridinyl group, a pyridinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, Naphthyl group, fluorenyl group, spiro-fluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenanthrenyl group, anthracenyl group, pyrenyl group, pyrazinyl group, A pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridyl group, Group, a quinolinyl group, an isoquinolinium group, a quinoxalinyl group, a quinazolinyl group, a carbazole group and a triazole group possess; ;

xe611 to xe616 are independently selected from 0, 1, 2 and 3;

The compound represented by Formula 601 and the compound represented by Formula 602 may include at least one of the following compounds ET1 to ET15.

The thickness of the electron transporting layer may be about 100 Å to about 1000 Å, for example, about 150 Å to about 500 Å. When the thickness of the electron transporting layer satisfies the above-described range, satisfactory electron transporting characteristics can be obtained without substantially increasing the driving voltage.

The electron transporting layer may further include a metal-containing material in addition to the above-described materials.

The metal-containing material may comprise a Li complex. The Li complex may include, for example, the following compound ET-D1 (lithium quinolate, LiQ) or ET-D2.

The electron transport region may include an electron injection layer that facilitates electron injection from the second electrode.

The electron injecting layer may be formed using various methods such as vacuum deposition, spin coating, casting, LB method, inkjet printing, laser printing, and laser induced thermal imaging (LITI) , And on the electron transport layer. When the electron injection layer is formed by the vacuum deposition method and the spin coating method, the deposition conditions and the coating conditions of the electron injection layer refer to the deposition conditions and the coating conditions of the hole injection layer.

The electron injection layer may include at least one selected from LiF, NaCl, CsF, Li ₂ O, BaO and LiQ.

The thickness of the electron injection layer may be from about 1 A to about 100 A, and from about 3 A to about 90 A. When the thickness of the electron injection layer satisfies the above-described range, satisfactory electron injection characteristics can be obtained without substantially increasing the driving voltage.

A second electrode is disposed above the electron transport region as described above. The second electrode may be a cathode, which is an electron injection electrode. At this time, a metal, an alloy, an electrically conductive compound having a low work function, or a mixture thereof may be used as the second electrode material. Specific examples of the material for the second electrode 19 include Li, Mg, Al, Al-Li, Ca, Mg-In, , Magnesium-silver (Mg-Ag), and the like. Alternatively, ITO or IZO may be used as the second electrode material. The second electrode may be a reflective electrode, a transflective electrode, or a transmissive electrode.

The organic light emitting diode may be included in a flat panel display device including a thin film transistor. The thin film transistor may include a gate electrode, a source and a drain electrode, a gate insulating film, and an active layer, and one of the source and drain electrodes may be in electrical contact with the first electrode of the organic light emitting device. The active layer may include crystalline silicon, amorphous silicon, an organic semiconductor, an oxide semiconductor, or the like, but is not limited thereto.

In the present specification, the C ₁ -C ₆₀ alkyl group means a linear or branched aliphatic hydrocarbon monovalent group having 1 to 60 carbon atoms, and specific examples thereof include methyl, ethyl, propyl, isobutyl, sec-butyl , a tert-butyl group, a pentyl group, an iso-amyl group, a hexyl group and the like. In the present specification, a C ₁ -C ₆₀ alkylene group means a divalent group having the same structure as the above C ₁ -C ₆₀ alkyl group.

In the present specification, the C ₁ -C ₆₀ alkoxy group means a monovalent group having the formula: -OA ₁₀₁ (wherein A ₁₀₁ is the above C ₁ -C ₆₀ alkyl group), and specific examples thereof include a methoxy group, Isopropyloxy group and the like.

In the present specification, the C ₂ -C ₆₀ alkenyl group has a structure containing at least one carbon double bond at the middle or end of the C ₂ -C ₆₀ alkyl group, and specific examples thereof include an ethenyl group, a propenyl group, and a butenyl group do. In the present specification, the C ₂ -C ₆₀ alkenylene group means a divalent group having the same structure as the C ₂ -C ₆₀ alkenyl group.

In the present specification, the C ₂ -C ₆₀ alkynyl group has a structure containing one or more carbon triple bonds at the middle or end of the C ₂ -C ₆₀ alkyl group, and specific examples thereof include ethynyl, propynyl, , And the like. In the present specification, the C ₂ -C ₆₀ alkynylene group means a divalent group having the same structure as the C ₂ -C ₆₀ alkynyl group.

In the present specification, the C ₃ -C ₁₀ cycloalkyl group means a monovalent saturated hydrocarbon monocyclic group having 3 to 10 carbon atoms, and specific examples thereof include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, Tyl group and the like. The C ₃ -C ₁₀ cycloalkylene group of the specification and the second having the same structure as the above C ₃ -C ₁₀ cycloalkyl group means a group.

In the present specification, a C ₁ -C ₁₀ heterocycloalkyl group means a monovalent monocyclic group having 1 to 10 carbon atoms including at least one hetero atom selected from N, O, P and S as a ring-forming atom, Examples include tetrahydrofuranyl, tetrahydrothiophenyl, and the like. In the present specification, a C ₁ -C ₁₀ heterocycloalkylene group means a divalent group having the same structure as the above-mentioned C ₁ -C ₁₀ heterocycloalkyl group.

In the present specification, the C ₃ -C ₁₀ cycloalkenyl group is a monovalent monocyclic group having 3 to 10 carbon atoms, which has at least one double bond in the ring, but does not have aromatics, Examples include a cyclopentenyl group, a cyclohexenyl group, a cycloheptenyl group and the like. In the present specification, the C ₃ -C ₁₀ cycloalkenylene group means a divalent group having the same structure as the C ₃ -C ₁₀ cycloalkenyl group.

In the present specification, the C ₁ -C ₁₀ heterocycloalkenyl group is a monovalent monocyclic group having 1 to 10 carbon atoms including at least one hetero atom selected from N, O, P and S as a ring-forming atom, It has one double bond. Specific examples of the C ₁ -C ₁₀ heterocycloalkenyl group include a 2,3-hyrofuranyl group, a 2,3-hydrothiophenyl group and the like. In the present specification, the C ₁ -C ₁₀ heterocycloalkenylene group means a divalent group having the same structure as the C ₁ -C ₁₀ heterocycloalkenyl group.

In the present specification, a C ₆ -C ₆₀ aryl group means a monovalent group having a carbocyclic aromatic system having 6 to 60 carbon atoms, and a C ₆ -C ₆₀ arylene group means a carbamoyl group having 6 to 60 carbon atoms Quot; means a divalent group having a cyclic aromatic system. Specific examples of the C ₆ -C ₆₀ aryl group include a phenyl group, a naphthyl group, an anthracenyl group, a phenanthrenyl group, a pyrenyl group, a klycenyl group and the like. The C ₆ -C ₆₀ aryl groups and C ₆ -C ₆₀ aryl If the alkylene group contains two or more rings, the two or more rings may be fused to each other.

As used herein, a C ₁ -C ₆₀ heteroaryl group means a monovalent group having at least one heteroatom selected from N, O, P and S as a ring-forming atom and having a carbocyclic aromatic system having from 1 to 60 carbon atoms And a C ₁ -C ₆₀ heteroarylene group means a divalent group having at least one heteroatom selected from N, O, P and S as a ring-forming atom and having a carbocyclic aromatic system having 1 to 60 carbon atoms do. Specific examples of the C ₁ -C ₆₀ heteroaryl group include a pyridinyl group, a pyrimidinyl group, a pyrazinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group, an isoquinolinyl group and the like. When the C ₁ -C ₆₀ heteroaryl group and the C ₁ -C ₆₀ heteroarylene group include two or more rings, two or more rings may be fused together.

In the present specification, the C ₆ -C ₆₀ aryloxy group indicates -OA ₁₀₂ (wherein A ₁₀₂ is the C ₆ -C ₆₀ aryl group), the C ₆ -C ₆₀ arylthio is -SA ₁₀₃ , And A ₁₀₃ is the above C ₆ -C ₆₀ aryl group.

In the present specification, a monovalent non-aromatic condensed polycyclic group is a monovalent aromatic condensed polycyclic group in which two or more rings are condensed with each other and contain only carbon as a ring-forming atom and the whole molecule is non-aromatic. (E. G., Having from 8 to 60 carbon atoms). Examples of the monovalent non-aromatic condensed polycyclic group include a fluorenyl group and the like. In the present specification, the divalent non-aromatic condensed polycyclic group means a divalent group having the same structure as the monovalent non-aromatic condensed polycyclic group.

In the present specification, a monovalent non-aromatic condensed heteropolycyclic group is a monovalent aromatic condensed heteropolycyclic group in which two or more rings are condensed with each other and contain heteroatoms selected from N, O, P and S in addition to carbon as a ring- , And the whole molecule is a monovalent group (for example, having a carbon number of 1 to 60) having non-aromacity. The monovalent non-aromatic heterocyclic polycyclic group includes a carbazolyl group and the like. In the present specification, the divalent non-aromatic heterocyclic polycyclic group means a divalent group having the same structure as the monovalent non-aromatic heterocyclic polycyclic group.

In the present specification, "Ph" means phenyl, "Me" means methyl, "Et" means ethyl, and "ter-Bu" or "Bu ^t " means tert-butyl.

Hereinafter, the organic light emitting device according to one embodiment of the present invention will be described in more detail with reference to the following examples, but the present invention is not limited to the following examples.

 [Example]

Example 1

A glass substrate having ITO / Ag / ITO deposited at a thickness of 70 Å / 1000 Å / 70 Å as an anode was cut into a size of 50 mm × 50 mm × 0.4 mm, ultrasonically washed with isopropyl alcohol and pure water for 10 minutes, UV light was irradiated, exposed to ozone, cleaned, and installed in a vacuum deposition apparatus.

HT13 is deposited on the anode to form a hole injection layer having a thickness of 700 A, HT3 is deposited to form a hole transport layer having a thickness of 800 ANGSTROM, and a compound 161A (first host), 318A Host) and the following compound PD82 (dopant) were co-deposited at a weight ratio of 50:50:15 to form a 400Å thick light emitting layer.

Then, ET1 and LiQ were co-deposited on the light emitting layer at a weight ratio of 100: 100 to form an electron transport layer having a thickness of 300 Å. Then, LiQ was deposited on the electron transport layer to form an electron injection layer having a thickness of 10 Å, Mg and Ag were co-deposited on the electron injection layer at a weight ratio of 90:10 to form a cathode having a thickness of 120 Å, thereby preparing an organic light emitting device.

Examples 2 to 16 and Comparative Examples 1 to 11

An organic light emitting device was fabricated in the same manner as in Example 1, except that the light emitting layer was formed as shown in Table 1 below.

The first host Second host Dopant Weight ratio
(First host: second host: dopant) Example 1 161A 318A PD82 50:50:15 Example 2 161A 318A PD82 30:70:15 Example 3 161A 301A PD82 50:50:15 Example 4 161A 301A PD82 30:70:15 Example 5 182A 318A PD82 50:50:15 Example 6 182A 318A PD82 30:70:15 Example 7 149A 302A PD82 50:50:15 Example 8 149A 302A PD82 30:70:15 Example 9 185B 315B PD82 50:50:15 Example 10 185B 315B PD82 70:30:15 Example 11 185B 309B PD82 50:50:15 Example 12 185B 309B PD82 70:30:15 Example 13 203B 309B PD82 50:50:15 Example 14 203B 309B PD82 70:30:15 Example 15 167B 345B PD82 50:50:15 Example 16 167B 345B PD82 70:30:15 Comparative Example 1 161A - PD82 100: 0: 15 Comparative Example 2 182A - PD82 100: 0: 15 Comparative Example 3 - 318A PD82 0: 100: 15 Comparative Example 4 - 301A PD82 0: 100: 15 Comparative Example 5 185B - PD82 100: 0: 15 Comparative Example 6 203B - PD82 100: 0: 15 Comparative Example 7 167B - PD82 100: 0: 15 Comparative Example 8 - 315B PD82 0: 100: 15 Comparative Example 9 - 309B PD82 0: 100: 15 Comparative Example 10 - 345B PD82 0: 100: 15 Comparative Example 11 Compound A Compound B PD82 50:50:15

&Lt; Compound A > < Compound B &

Evaluation example  One

The driving voltage, current density, luminance, luminescent color, efficiency and lifetime of the organic luminescent devices of Examples 1 to 16 and Comparative Examples 1 to 11 were evaluated using a PR650 Spectroscan Source Measurement Unit (manufactured by PhotoResearch). The T ₉₇ lifetime represents the time taken for the luminance to decrease to 97% when the initial luminance of 9000 cd / m ² is taken as 100%. The results are shown in Table 2 below:

Driving voltage
(V) Current density
(mA / cm ² ) efficiency
(cd / A) power
(Im / W) CIE_x CIE_y T ₉₇
(time) Example 1 4.2 9.8 92.3 69.5 0.267 0.702 156 Example 2 4.9 10.1 89.1 57.0 0.284 0.691 158 Example 3 4.1 9.9 91.1 69.0 0.276 0.695 123 Example 4 5.1 9.3 96.8 59.3 0.281 0.690 153 Example 5 4.5 11.0 82.0 57.0 0.312 0.665 128 Example 6 5.0 10.8 83.2 52.1 0.293 0.680 161 Example 7 4.2 10.0 90.1 66.8 0.277 0.697 145 Example 8 5.1 9.6 94.2 57.8 0.285 0.691 163 Example 9 4.2 10.2 88.3 66.0 0.238 0.721 148 Example 10 4.7 10.4 86.6 57.9 0.241 0.718 161 Example 11 4.1 10.1 89.3 68.4 0.248 0.717 134 Example 12 4.6 9.8 91.6 62.6 0.249 0.715 156 Example 13 4.3 10.4 86.3 63.1 0.262 0.704 145 Example 14 4.8 10.5 85.9 56.2 0.250 0.704 156 Example 15 4.4 10.1 89.1 63.6 0.252 0.715 121 Example 16 4.9 10.3 87.8 56.3 0.267 0.704 163 Comparative Example 1 4.0 12.8 70.4 54.8 0.242 0.720 52 Comparative Example 2 4.5 13.0 69.0 48.2 0.289 0.687 45 Comparative Example 3 7.3 20.8 43.2 18.6 0.264 0.703 2 Comparative Example 4 7.2 16.7 53.8 23.5 0.268 0.703 4 Comparative Example 5 9.0 145.2 6.2 2.2 0.235 0.718 One Comparative Example 6 9.6 187.5 4.8 1.6 0.256 0.703 One Comparative Example 7 8.7 121.6 7.4 2.7 0.287 0.690 One Comparative Example 8 4.1 16.6 54.2 41.5 0.295 0.678 41 Comparative Example 9 4.0 15.4 58.5 45.9 0.266 0.701 38 Comparative Example 10 4.1 14.7 61.2 46.9 0.261 0.702 46 Comparative Example 11 4.1 12.8 70.3 53.4 0.277 0.697 64

From Table 2, it can be confirmed that the organic luminescent devices of Examples 1 to 16 have improved characteristics as compared with the organic luminescent devices of Comparative Examples 1 to 11.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the exemplary embodiments, and that various changes and modifications may be made therein without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: Organic light emitting device
110: first electrode
150: organic layer
190: second electrode

Claims (20)

A first electrode; A second electrode; And an organic layer including a light emitting layer interposed between the first electrode and the second electrode,
Wherein the light emitting layer comprises a first host represented by the following Formula 1 and a second host represented by the following Formula 2:
&Lt; Formula 1 >

(2)

Among the above general formulas (1) and (2)
A ₁₁ , A ₁₂ , A ₁₃ and A ₁₄ are each independently selected from the group consisting of benzene, naphthalene, pyridine, pyrimidine, quinoline, isoquinoline, naphthyridine, 1,8-naphthyridine, Naphthyridine, 1,6-naphthyridine, 1,7-naphthyridine, 2,7-naphthyridine, quinoxaline, phthalazine, quinazoline and cinnoline;
X ₁₁ is _{O, S, C (R 17} ) (R 18), Si (R 17) (R 18), P (R 17), B (R 17), P (= O) (R 17) or N _{- [(L 12) a12 -} (R 12) b12] , and;
L ₁₁ to L ₁₃ and L ₂₁ independently represent a substituted or unsubstituted C ₃ -C ₁₀ cycloalkylene group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkylene group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkylene group, C ₁₀ cycloalkenyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl alkenylene group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, A substituted or unsubstituted divalent non-aromatic condensed polycyclic group and a substituted or unsubstituted divalent non-aromatic heterocyclic polycyclic group;
a11 to a13 and a21 are independently selected from 0, 1, 2, 3, 4 and 5;
R ₁₁ , R ₁₂ and R ₂₁ independently represent a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C ₃ -C ₁₀ A substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted aryl group, A substituted or unsubstituted monovalent non-aromatic heterocyclic polycyclic group, -N (Q ₁ ) (Q ₂ ), -Si (Q ₃ ) (Q ₄ ) (Q ₅ ) and it is selected from _{-B (Q 6) (Q 7} );
b11, b12 and b21 are independently selected from 1, 2, 3 and 4;
R ₁₃ to R ₁₈ and R ₂₂ to R ₂₄ independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, , A hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C ₁ -C ₆₀ alkyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, hwandoen C ₂ -C ₆₀ alkynyl group, a substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, a substituted or unsubstituted C ₁ -C ₁₀ heteroaryl cycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₆ ring - C ₆₀ aryloxy group, a substituted or unsubstituted C ₆ -C ₆₀ arylthio group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl groups, substituted or unsubstituted 1 is a non-aromatic condensed polycyclic group, and a substituted or unsubstituted 1, a non-aromatic heterocyclic is selected from a condensed polycyclic group;
b13 to b16 and b22 to b24 are independently of each other selected from 1, 2, 3 and 4;
The substituted C ₃ -C ₁₀ cycloalkylene group, the substituted C ₁ -C ₁₀ heterocycloalkylene group, the substituted C ₃ -C ₁₀ cycloalkenylene group, the substituted C ₁ -C ₁₀ heterocycloalkenylene group, the substituted a C ₆ -C ₆₀ aryl group, a substituted C ₁ -C ₆₀ heteroaryl group, a substituted divalent non-aromatic condensed polycyclic group, a substituted bivalent non-condensed polycyclic aromatic heterocyclic group, a substituted C ₁ -C ₆₀ A substituted C ₂ -C ₆₀ alkenyl group, a substituted C ₂ -C ₆₀ alkynyl group, a substituted C ₁ -C ₆₀ alkoxy group, a substituted C ₃ -C ₁₀ cycloalkyl group, a substituted C ₁ -C ₁₀ hetero A substituted C ₃ -C ₁₀ cycloalkenyl group, a substituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted C ₆ -C ₆₀ aryl group, a substituted C ₆ -C ₆₀ aryloxy group, a substituted C ₆ -C ₆₀ arylthio group, a substituted C ₁ -C ₆₀ heteroaryl groups, substituted monovalent non-aromatic condensed polycyclic group, a substituted monovalent non-aromatic hydrocarbon ring at least one substituent of the condensed polycyclic group,
A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group and a C ₁ -C ₆₀ alkoxy group;
A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, or a salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocyclic condensed polycyclic group, -N (Q _{11) (Q 12), -Si (Q} 13) (Q 14) (Q 15) and _{-B (Q 16) (Q 17} ) of the at least one substituted, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl , A C ₂ -C ₆₀ alkynyl group and a C ₁ -C ₆₀ alkoxy group;
C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryl A C ₆ -C ₆₀ arylthio group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group and a monovalent non-aromatic heterocyclic polycyclic group;
A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group, a C ₁ -C ₆₀ alkoxy group, a C ₃ -C ₁₀ cycloalkyl group, a C ₁ -C ₁₀ heterocyclo alkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ aryl come T, C ₁ - C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocyclic condensed polycyclic _{group, -N (Q 21) (Q} 22), -Si (Q 23) (Q 24) (Q 25) and _{-B (Q 26) (Q 27} ) of the at least one substituted, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkyl alkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ aryl come T, C ₁ -C ₆₀ H. Heteroaryl group, monovalent non-aromatic condensed polycyclic group and monovalent non-aromatic heterocyclic polycyclic group; And
_{-N (Q 31) (Q 32} ), -Si (Q 33) (Q 34) (Q 35) and _{-B (Q 36) (Q 37} ); ;
Q ₁ to Q _7, Q ₁₁ to Q _17, Q ₂₁ to Q ₂₇ and Q ₃₁ to Q ₃₇ are, each independently, hydrogen, C ₁ -C ₆₀ alkyl, C ₁ -C ₆₀ alkoxy group, C ₆ -C ₆₀ together An aryl group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic heterocyclic polycyclic group. The method according to claim 1,
A ₁₁ , A ₁₂ , A ₁₃ and A ₁₄ are each independently selected from the group consisting of benzene, naphthalene, pyridine, pyrimidine, quinoline, isoquinoline, 2,6-naphthyridine, , 1,6-naphthyridine, 1,7-naphthyridine, 2,7-naphthyridine, quinoxaline and quinazoline. The method according to claim 1,
X ₁₁ is _{O, S, C (R 17} ) (R 18) or _{N - [(L 12) a12} - (R 12) b12] in organic light emitting devices. The method according to claim 1,
L ₁₁ to L ₁₃ and L ₂₁ are each independently a group selected from the following formulas (3-1) to (3-41):

Of the above-mentioned formulas (3-1) to (3-41)
X ₃₁ is selected from O, S, N (R ₃₃ ) and C (R ₃₃ ) (R ₃₄ );
R ₃₁ to R ₃₄ independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, A sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a C ₁ -C ₂₀ alkyl group, a C ₁ -C ₂₀ alkoxy group, a phenyl group, a biphenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, A pyrenyl group, a pyridinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolyl group, a quinolyl group, a quinolyl group, a quinolyl group, A quinoxalinyl group, a quinazolinyl group, a carbazolyl group and a triazinyl group;
b31 is selected from 1, 2, 3 and 4;
b32 is selected from 1, 2, 3, 4, 5 and 6;
b33 is selected from 1, 2 and 3;
b34 is selected from 1 and 2;
b35 is selected from 1, 2, 3, 4 and 5;
* And * are independent sites of bonding to neighboring atoms. The method according to claim 1,
L ₁₁ to L ₁₃ and L ₂₁ are each independently a group selected from the following formulas (4-1) to (4-6) and (4-50) to (4-57)

Of the above-mentioned formulas 4-1 to 4-6 and 4-50 to 4-57,
* And * are independent sites of bonding to neighboring atoms. The method according to claim 1,
R ₁₁ , R ₁₂ and R ₂₁ independently represent a phenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, A phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, A thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, an imidazolyl group, a pyrazolyl group, a pyrazolyl group, A thiazolyl group, an isothiazolyl group, an oxazolyl group, an isooxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, an imidazolyl group, an imidazolyl group, A pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolyl group, A carbamoyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group quinazolinyl group, cinnolinyl group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, A benzofuranyl group, a benzothiophenyl group, a benzothiazolyl group, an isobenzothiazolyl group, an isobenzothiazolyl group, A benzooxazolyl group, an isobenzooxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofura group, A dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, an imidazopyridinyl group, An imidazopyrimidinyl group, a pyridobenzofuranyl group, a pyrimidobenzofuranyl group, a pyridobenzothiophenyl group, a pyrimidobenzothiophenyl group, an imidazopyrimidinyl group, an imidazopyrimidinyl group, A thianthrenyl group, a phenoxathiinyl group, a dibenzodioxinyl group and -N (Q ₁ ) (Q ₂ ); And
A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₂₀ alkyl group, a C ₁ -C ₂₀ alkoxy group, a phenyl group, a biphenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, an hethtalenyl group, A phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a thienyl group, a thienyl group, a thienyl group, A thiophene group, a furanyl group, an imidazolyl group, an imidazolyl group, an imidazolyl group, an imidazolyl group, an imidazolyl group, an imidazolyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coronenyl group, A pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, A pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a pyridyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, A phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, a benzothiophenyl group, a benzothiophenyl group, a benzothiophenyl group, a benzothiophenyl group, Benzothiazolyl group, benzothiazolyl group, dibenzothiophenyl group, dibenzothiophenyl group, dibenzothiophenyl group, dibenzothiophenyl group, dibenzothiophenyl group, dibenzothiophenyl group, benzothiazolyl group, benzothiazolyl group, benzothiazolyl group, A phenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, an heptalenyl group, a pivaloyl group, a pivaloyl group, a pivaloyl group, a pivaloyl group, a carbazolyl group, a dibenzocarbazolyl group and -Si (Q ₃₃ ) (Q ₃₄ ) (Q ₃₅ ) An indanecyl group, an acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, A phenanthryl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a klycenyl group, a naphthacenyl group, a phenenyl group, a phenanthryl group, a phenanthryl group, A thiazolyl group, a thiazolyl group, a thiazolyl group, a thiazolyl group, a thiazolyl group, an isothiazole group, a thiazolyl group, a thiazolyl group, a thiazolyl group, a thiazolyl group, a thiazolyl group, A pyridinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a pyridyl group, a quinolinyl group, an isoquinolinyl group, an isoxazolyl group, an isoxazolyl group, A carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, Diazo, benzofuranyl, benzothiophenyl, benzothiazolyl, A thiazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzoylsilyl group, a benzooxazolyl group, a benzooxazolyl group, a benzooxazolyl group, An imidazopyrimidinyl group, an imidazopyrimidinyl group, a pyridobenzofuranyl group, a pyrimidobenzofuranyl group, a pyridobenzothiophenyl group, a pyrimidobenzothiophenyl group, a thianthrenyl group, an imidazopyrimidinyl group, an imidazopyrimidinyl group, A phenoxatinyl group and a dibenzodioxinyl group; ;
Q ₁ , Q ₂ and Q ₃₃ to Q ₃₅ are, independently of one another, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, a monovalent non-aromatic condensed polycyclic group and a monovalent non-aromatic heterocyclic polycyclic group Lt; / RTI &gt; The method according to claim 1,
R ₁₁ , R ₁₂ and R ₂₁ are, independently of each other, a group selected from the following formulas (5-1) to (5-58):

Of the above formulas (5-1) to (5-58)
X ₅₁ is a single bond, N (R ₅₄ ), C (R ₅₄ ) (R ₅₅ ), O and S;
X ₅₂ is selected from N (R ₅₆ ), C (R ₅₆ ) (R ₅₇ ), O and S;
R ₅₁ to R ₅₇ independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, cyano, nitro, C ₁ -C ₂₀ alkyl, phenyl, biphenyl, naphthyl, , carbazole group, a dibenzo furanoid group, a thiophenyl group is selected from dibenzothiophene, and _{-Si (Q 33) (Q 34} ) (Q 35);
Q ₁ , Q ₂ and Q ₃₃ to Q ₃₅ are each independently selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, A phenyl group, a biphenyl group, a naphthyl group and a fluorenyl group;
b51 is selected from 1, 2, 3, 4 and 5;
b52 is selected from 1, 2, 3, 4, 5, 6 and 7;
b53 is selected from 1, 2, and 3;
b54 is selected from 1, 2, 3 and 4;
b55 is selected from 1, 2, 3, 4, 5 and 6;
* Is the binding site with neighboring atoms. 8. The method of claim 7,
At least one of R ₁₁ and R ₁₂ is selected from the above formulas (5-13) to (5-57);
R ₂₁ is selected from the following formulas (5-1) to (5-12) and (5-58). 8. The method of claim 7,
At least one of R ₁₁ and R ₁₂ is selected from the above formulas 5-1 to 5-12 and 5-58;
And R &lt; ₂₁ &gt; is selected from the above formulas (5-13) to (5-57). The method according to claim 1,
b11, b12, and b21 are independently selected from 1 and 2, independently from each other. The method according to claim 1,
R ₁₃ to R ₁₈ and R ₂₂ to R ₂₄ independently represent hydrogen, a methyl group, an ethyl group, a n-propyl group, an n-butyl group, a phenyl group, a naphthyl group, an anthryl group, a pyrenyl group, a phenanthrenyl group, An oleyl group and a carbazolyl group; And
A phenyl group, a naphthyl group, an anthryl group, a pyrenyl group, a phenanthrenyl group, a pyrenyl group, a pyrenyl group, a pyrenyl group, a pyrenyl group, a pyrenyl group, a pyrenyl group, and a pyrenyl group, which are substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, cyano, nitro, A fluorenyl group and a carbazolyl group; &Lt; / RTI &gt; The method according to claim 1,
Wherein the first host is represented by the following Formula 1-1:
&Lt; Formula 1-1 >

In Formula 1-1,
A ₁₁ to A ₁₄ , X ₁₁ , L ₁₁ , a ₁₁ , R ₁₁ and b ₁₁ are as defined in claim 1. The method according to claim 1,
Wherein the second host is represented by the following Formula 2-1:
&Lt; Formula (2-1)

In the above formula (2-1)
L ₂₁ , a ₂₁ , R ₂₁ and b ₂₁ are as defined in claim 1. The method according to claim 1,
The first host is represented by any one of the following formulas 1-11 to 1-26;
Wherein the second host is represented by any one of the following Formulas 2-11 and 2-12:

Of the above formulas 1-11 to 1-26, 2-11 and 2-12,
A ₁₁ and A ₁₄ are each independently selected from the group consisting of benzene, naphthalene, pyridine, pyrimidine, quinoline, isoquinoline, 2,6-naphthyridine, 1,8-naphthyridine, 6-naphthyridine, 1,7-naphthyridine, 2,7-naphthyridine, quinoxaline, phthalazine, quinazoline and cininone;
X ₁₁ is _{O, S, C (R 17} ) (R 18), Si (R 17) (R 18), P (R 17), B (R 17), P (= O) (R 17) or N _{- [(L 12) a12 -} (R 12) b12] , and;
L ₁₁ , L ₁₂ and L ₂₁ are independently of each other a group selected from the following formulas (4-1) to (4-6) and (4-50) to (4-57);

Of the above-mentioned formulas 4-1 to 4-6 and 4-50 to 4-57,
* And * are independently from each other a bonding site with a neighboring atom;
a11, a12 and a21 are independently selected from 0, 1, 2, 3, 4 and 5;
R ₁₁ , R ₁₂ and R ₂₁ independently represent a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C ₃ -C ₁₀ A substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted aryl group, A substituted or unsubstituted monovalent non-aromatic heterocyclic polycyclic group, -N (Q ₁ ) (Q ₂ ), -Si (Q ₃ ) (Q ₄ ) (Q ₅ ) And -B (Q ₆ ) (Q ₇ )
At least one of R ₁₁ and R ₁₂ is selected from the following formulas (6-52) to (6-134); R ₂₁ is selected from the following formulas (6-1) to (6-51) and (6-135) to (6-138);

Of the above formulas (6-1) to (6-138)
t-Bu means tert-butyl group;
Ph means a phenyl group;
* Is the binding site with neighboring atoms;
b11, b12 and b21 are independently selected from 1, 2, 3 and 4;
R ₁₇ and R ₁₈ independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C ₁ -C ₆₀ alkyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, a substituted or unsubstituted C ₂ -C _A substituted or unsubstituted C ₁ -C ₆ alkynyl group, a substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C _A substituted or unsubstituted C ₁ -C ₁₀ cycloalkenyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, A substituted or unsubstituted C ₆ -C ₆₀ arylthio group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted monovalent non-aromatic A condensed polycyclic group and a substituted or unsubstituted monovalent non-aromatic heterocyclic polycyclic group;
Q ₁ to Q ₇ independently represent hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₁ -C ₆₀ alkoxy group, a C ₆ -C ₆₀ aryl group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensation Polycyclic groups and monovalent non-aromatic heterocyclic polycyclic groups. The method according to claim 1,
The first host is represented by any one of the following formulas 1-11 to 1-26;
Wherein the second host is represented by any one of the following Formulas 2-11 and 2-12:

Of the above formulas 1-11 to 1-26, 2-11 and 2-12,
A ₁₁ and A ₁₄ are each independently selected from the group consisting of benzene, naphthalene, pyridine, pyrimidine, quinoline, isoquinoline, 2,6-naphthyridine, 1,8-naphthyridine, 6-naphthyridine, 1,7-naphthyridine, 2,7-naphthyridine, quinoxaline, phthalazine, quinazoline and cininone;
X ₁₁ is _{O, S, C (R 17} ) (R 18), Si (R 17) (R 18), P (R 17), B (R 17), P (= O) (R 17) or N _{- [(L 12) a12 -} (R 12) b12] , and;
L ₁₁ , L ₁₂ and L ₂₁ are independently of each other a group selected from the following formulas (4-1) to (4-6) and (4-50) to (4-57);

Of the above-mentioned formulas 4-1 to 4-6 and 4-50 to 4-57,
* And * are independently from each other a bonding site with a neighboring atom;
a11, a12 and a21 are independently selected from 0, 1, 2, 3, 4 and 5;
R ₁₁ , R ₁₂ and R ₂₁ independently represent a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C ₃ -C ₁₀ A substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted aryl group, A substituted or unsubstituted monovalent non-aromatic heterocyclic polycyclic group, -N (Q ₁ ) (Q ₂ ), -Si (Q ₃ ) (Q ₄ ) (Q ₅ ) and _{-B (Q 6) (Q 7} ) doedoe selected from, R ₁₁ and R ₁₂ at least one of which is, to the general formula is selected from 6-1 to 6-51 and 6-135 to 6-138, R ₂₁ to the Is selected from formulas 6-52 to 6-134;

Of the above formulas (6-1) to (6-138)
t-Bu means tert-butyl group;
Ph means a phenyl group;
* Is the binding site with neighboring atoms;
b11, b12 and b21 are independently selected from 1, 2, 3 and 4;
R ₁₇ and R ₁₈ independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C ₁ -C ₆₀ alkyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, a substituted or unsubstituted C ₂ -C _A substituted or unsubstituted C ₁ -C ₆ alkynyl group, a substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C _A substituted or unsubstituted C ₁ -C ₁₀ cycloalkenyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, A substituted or unsubstituted C ₆ -C ₆₀ arylthio group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted monovalent non-aromatic A condensed polycyclic group and a substituted or unsubstituted monovalent non-aromatic heterocyclic polycyclic group;
Q ₁ to Q ₇ independently represent hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₁ -C ₆₀ alkoxy group, a C ₆ -C ₆₀ aryl group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensation Polycyclic groups and monovalent non-aromatic heterocyclic polycyclic groups. The method according to claim 1,
Wherein the first host is selected from the following compounds 101A to 206A and the second host is selected from the following compounds 301A to 342A:

The method according to claim 1,
Wherein the first host is selected from the following compounds 101B to 230B and the second host is selected from the following compounds 301B to 345B:

The method according to claim 1,
Wherein the light emitting layer further comprises a phosphorescent dopant. 19. The method of claim 18,
Wherein the phosphorescent dopant is selected from organometallic complexes represented by the following formula (401):
&Lt; Formula 401 >

In the above formula (401)
M is selected from iridium (Ir), platinum (Pt), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb) and thorium (TM);
X ₄₀₁ to X ₄₀₄ independently represent a nitrogen atom or a carbon atom;
The A ₄₀₁ and A ₄₀₂ rings may be, independently of one another, substituted or unsubstituted benzene, substituted or unsubstituted naphthalene, substituted or unsubstituted fluorene, substituted or unsubstituted spirofluorene, substituted or unsubstituted indene Substituted or unsubstituted thiophenes, substituted or unsubstituted thiophenes, substituted or unsubstituted furan, substituted or unsubstituted imidazoles, substituted or unsubstituted pyrazoles, substituted or unsubstituted thiols, substituted or unsubstituted thiophenes, Substituted or unsubstituted thiazoles, substituted or unsubstituted isothiazoles, substituted or unsubstituted oxazoles, substituted or unsubstituted isoxazoles, substituted or unsubstituted pyridines, substituted or unsubstituted pyrazines, substituted or unsubstituted pyrimidines, Substituted or unsubstituted quinoxaline, substituted or unsubstituted quinazoline, substituted or unsubstituted quinazoline, substituted or unsubstituted quinazoline, substituted or unsubstituted quinazoline, substituted or unsubstituted quinazoline, substituted or unsubstituted quinazoline, Substituted or unsubstituted benzoimidazoles, substituted or unsubstituted benzofuran, substituted or unsubstituted benzothiophenes, substituted or unsubstituted isobenzothiophenes, substituted or unsubstituted benzothiophenes, substituted or unsubstituted benzothiophenes, Substituted or unsubstituted benzoxazole, substituted or unsubstituted benzoxazole, substituted or unsubstituted isobenzoxazole, substituted or unsubstituted triazole, substituted or unsubstituted oxadiazole, substituted or unsubstituted triazine, substituted or unsubstituted dibenzofuran, And substituted or unsubstituted dibenzothiophene;
The substituted benzene, substituted naphthalene, substituted fluorene, substituted spiro-fluorene, substituted indene, substituted pyrrole, substituted thiophene, substituted furan, substituted imidazole, substituted pyrazole, Substituted thiazoles, substituted thiazoles, substituted isothiazoles, substituted oxazoles, substituted isoxazoles, substituted pyridines, substituted pyrazines, substituted pyrimidines, substituted pyridazines, substituted quinolines, substituted isoquinolines, Substituted quinoxaline, substituted quinazoline, substituted carbazole, substituted benzoimidazole, substituted benzofuran, substituted benzothiophene, substituted isobenzothiophene, substituted benzoxazole, substituted iso At least one substituent of the benzooxazole, the substituted triazole, the substituted oxadiazole, the substituted triazine, the substituted dibenzofuran and the substituted dibenzothiophene,
A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group and a C ₁ -C ₆₀ alkoxy group;
A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, or a salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocyclic condensed polycyclic group, -N (Q _{401) (Q 402), -Si (Q} 403) (Q 404) (Q 405) and _{-B (Q 406) (Q 407} ) of the at least one substituted, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl , A C ₂ -C ₆₀ alkynyl group and a C ₁ -C ₆₀ alkoxy group;
C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryl A C ₆ -C ₆₀ arylthio group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group and a monovalent non-aromatic heterocyclic polycyclic group;
A halogen atom, a hydroxyl group, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, Or a salt thereof, a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group, a C ₁ -C ₆₀ alkoxy group, a C ₃ -C ₁₀ cycloalkyl group, a C ₁ -C ₁₀ heterocyclo alkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heteroaryl cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ aryl come T, C ₁ - C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocyclic condensed polycyclic _{group, -N (Q 411) (Q} 412), -Si (Q 413) (Q 414) (Q 415) A C ₃ -C ₁₀ cycloalkyl group, a C ₃ -C ₁₀ heterocycloalkyl group, a C ₃ -C ₁₀ cycloalkenyl group, a C ₁ -C ₁₀ heterocycloalkyl group substituted with at least one of -B (Q ₄₁₆ ) (Q ₄₁₇ ) alkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ aryl come T, C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group and a monovalent non-aromatic heterocyclic polycyclic group; And
Q ₄₂₁ , Q ₄₂₂ , Q ₄₂₃ , Q ₄₂₄ , Q ₄₂₅ , and -B Q ₄₂₆ , Q ₄₂₇ ; ;
L ₄₀₁ is an organic ligand;
xc1 is 1, 2 or 3;
xc2 is 0, 1, 2 or 3; 19. The method of claim 18,
Wherein the phosphorescent dopant is selected from the following compounds PD1 to PD82:

Images