JP5886945B2 - 多成分発光層を有するoled - Google Patents
多成分発光層を有するoled Download PDFInfo
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- JP5886945B2 JP5886945B2 JP2014512812A JP2014512812A JP5886945B2 JP 5886945 B2 JP5886945 B2 JP 5886945B2 JP 2014512812 A JP2014512812 A JP 2014512812A JP 2014512812 A JP2014512812 A JP 2014512812A JP 5886945 B2 JP5886945 B2 JP 5886945B2
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- 150000001875 compounds Chemical class 0.000 claims description 104
- 239000002019 doping agent Substances 0.000 claims description 56
- 239000000463 material Substances 0.000 claims description 41
- 230000005525 hole transport Effects 0.000 claims description 38
- 238000004768 lowest unoccupied molecular orbital Methods 0.000 claims description 20
- 150000003384 small molecules Chemical class 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 238000004770 highest occupied molecular orbital Methods 0.000 claims description 13
- 125000002524 organometallic group Chemical group 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- UJOBWOGCFQCDNV-UHFFFAOYSA-N Carbazole Natural products C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 claims description 7
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 claims description 6
- 238000002207 thermal evaporation Methods 0.000 claims description 6
- -1 carbazole compound Chemical class 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 claims description 3
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical compound C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 claims description 3
- 150000003852 triazoles Chemical class 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052790 beryllium Inorganic materials 0.000 claims description 2
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052741 iridium Inorganic materials 0.000 claims description 2
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical group [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 93
- 230000032258 transport Effects 0.000 description 28
- 239000000758 substrate Substances 0.000 description 9
- 238000000151 deposition Methods 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 7
- 239000012044 organic layer Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000412 dendrimer Substances 0.000 description 5
- 229920000736 dendritic polymer Polymers 0.000 description 5
- 239000003446 ligand Substances 0.000 description 5
- 230000005693 optoelectronics Effects 0.000 description 5
- 150000002894 organic compounds Chemical class 0.000 description 5
- 239000011368 organic material Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 125000000217 alkyl group Chemical group 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 125000001424 substituent group Chemical group 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 125000003342 alkenyl group Chemical group 0.000 description 2
- 125000000304 alkynyl group Chemical group 0.000 description 2
- 239000002800 charge carrier Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001194 electroluminescence spectrum Methods 0.000 description 2
- 125000001072 heteroaryl group Chemical group 0.000 description 2
- UEEXRMUCXBPYOV-UHFFFAOYSA-N iridium;2-phenylpyridine Chemical compound [Ir].C1=CC=CC=C1C1=CC=CC=N1.C1=CC=CC=C1C1=CC=CC=N1.C1=CC=CC=C1C1=CC=CC=N1 UEEXRMUCXBPYOV-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000010129 solution processing Methods 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- DHDHJYNTEFLIHY-UHFFFAOYSA-N 4,7-diphenyl-1,10-phenanthroline Chemical group C1=CC=CC=C1C1=CC=NC2=C1C=CC1=C(C=3C=CC=CC=3)C=CN=C21 DHDHJYNTEFLIHY-UHFFFAOYSA-N 0.000 description 1
- DIVZFUBWFAOMCW-UHFFFAOYSA-N 4-n-(3-methylphenyl)-1-n,1-n-bis[4-(n-(3-methylphenyl)anilino)phenyl]-4-n-phenylbenzene-1,4-diamine Chemical compound CC1=CC=CC(N(C=2C=CC=CC=2)C=2C=CC(=CC=2)N(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C(C)C=CC=2)C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C(C)C=CC=2)=C1 DIVZFUBWFAOMCW-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 101100394073 Caenorhabditis elegans hil-1 gene Proteins 0.000 description 1
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910052805 deuterium Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 150000002367 halogens Chemical group 0.000 description 1
- 125000004404 heteroalkyl group Chemical group 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000013086 organic photovoltaic Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
- H10K50/15—Hole transporting layers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
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- H10K50/00—Organic light-emitting devices
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- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/12—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising dopants
- H10K50/121—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising dopants for assisting energy transfer, e.g. sensitization
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- H10K50/00—Organic light-emitting devices
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- H10K50/16—Electron transporting layers
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- H10K2101/30—Highest occupied molecular orbital [HOMO], lowest unoccupied molecular orbital [LUMO] or Fermi energy values
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- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/10—Transparent electrodes, e.g. using graphene
- H10K2102/101—Transparent electrodes, e.g. using graphene comprising transparent conductive oxides [TCO]
- H10K2102/103—Transparent electrodes, e.g. using graphene comprising transparent conductive oxides [TCO] comprising indium oxides, e.g. ITO
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- H10K85/324—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3] comprising aluminium, e.g. Alq3
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- Electroluminescent Light Sources (AREA)
Description
110 基板
115 アノード
120 正孔注入層
125 正孔輸送層
130 電子ブロッキング層
135 発光層
140 正孔ブロッキング層
145 電子輸送層
150 電子注入層
155 保護層
160 カソード
162 第一の導電層
164 第二の導電層
200 反転させたOLED、デバイス
210 基板
215 カソード
220 発光層
225 正孔輸送層
230 アノード
Claims (19)
- アノード電極と;
カソード電極と;
前記アノード電極と前記カソード電極との間に配置された有機電界発光層とを含み、
前記有機電界発光層が、リン光ドーパントと、次の3つの異なる化合物(a)、(b)及び(c)を含むホスト材料とを含むことを特徴とする有機発光デバイス:
(a)前記リン光ドーパントの三重項エネルギーよりも大きい三重項エネルギーを有する電子輸送ホスト化合物;
(b)前記リン光ドーパントの三重項エネルギーよりも大きい三重項エネルギーを有するホール輸送ホスト化合物;
(c)分子量が2,000未満であり、少なくとも2.0eVのバンドギャップを有し、且つ前記リン光ドーパントの三重項エネルギーよりも大きい三重項エネルギーを有する広いバンドギャップを有するホスト化合物;
ここで、前記(b)の前記ホール輸送ホスト化合物が有機金属錯体である。 - アノード電極と;
カソード電極と;
前記アノード電極と前記カソード電極との間に配置された有機電界発光層と;
前記有機電界発光層と前記アノード電極との間にホール注入層を含み、
前記有機電界発光層が、リン光ドーパントと、次の3つの異なる化合物(a)、(b)及び(c)を含むホスト材料とを含むことを特徴とする有機発光デバイス:
(a)前記リン光ドーパントの三重項エネルギーよりも大きい三重項エネルギーを有する電子輸送ホスト化合物;
(b)前記リン光ドーパントの三重項エネルギーよりも大きい三重項エネルギーを有するホール輸送ホスト化合物;
(c)分子量が2,000未満であり、少なくとも2.0eVのバンドギャップを有し、且つ前記リン光ドーパントの三重項エネルギーよりも大きい三重項エネルギーを有する広いバンドギャップを有するホスト化合物;
ここで、前記(b)の前記ホール輸送ホスト化合物が有機金属錯体である。 - 広いバンドギャップを有するホスト化合物(c)が、ホール輸送ホスト化合物(b)のバンドギャップ及び電子輸送ホスト化合物(a)のバンドギャップと同等又はそれよりも大きいバンドギャップを有する請求項1及び2のいずれかに記載のデバイス。
- 電子輸送ホスト化合物(a)のLUMOエネルギー準位が、ホール輸送ホスト化合物(b)のLUMOエネルギー準位と同等又はそれよりも低い請求項1及び2のいずれかに記載のデバイス。
- ホール輸送ホスト化合物(b)のHOMOエネルギー準位が、電子輸送ホスト化合物(a)のHOMOエネルギー準位と同等又はそれよりも高い請求項1及び2のいずれかに記載のデバイス。
- 広いバンドギャップを有するホスト化合物(c)が、小分子である請求項1及び2のいずれかに記載のデバイス。
- 有機金属錯体が、イリジウム錯体又は亜鉛錯体である請求項1及び2に記載のデバイス。
- 電子輸送ホスト化合物(a)が、オキサジアゾール、ベンゾイミダゾール、トリアゾール、トリアジン、ベンゾチアゾール、又はカルバゾール化合物である請求項1及び2のいずれかに記載のデバイス。
- 電子輸送ホスト化合物(a)が、有機金属錯体である請求項1及び2のいずれかに記載のデバイス。
- 有機金属錯体が、アルミニウム錯体、亜鉛錯体、又はベリリウム錯体である請求項1及び2のいずれかに記載のデバイス。
- 広いバンドギャップを有するホスト化合物(c)の濃度が、10〜60wt%の範囲である請求項1及び2のいずれかに記載のデバイス。
- 電子輸送ホスト化合物(a)とホール輸送ホスト化合物(b)の濃度がそれぞれ、10〜60wt%の範囲である請求項11に記載のデバイス。
- リン光ドーパントの濃度が、0.5〜10wt%の範囲である請求項12に記載のデバイス。
- リン光ドーパントが増感剤ドーパントであり、有機電界発光層が発光体ドーパントを更に含み、前記発光体ドーパントの三重項エネルギーが前記増感剤ドーパントの三重項エネルギーよりも低い請求項1及び2のいずれかに記載のデバイス。
- 第1の電極を提供することと;
前記第1の電極の上に有機電界発光層を形成することと;
前記有機電界発光層の上に第2の電極を形成することとを含み、
前記有機電界発光層が、リン光ドーパントと、次の3つの異なる化合物(a)、(b)及び(c)を含むホスト材料とを含むことを特徴とする有機発光デバイスを作製する方法:
(a)前記リン光ドーパントの三重項エネルギーよりも大きい三重項エネルギーを有する電子輸送ホスト化合物;
(b)前記リン光ドーパントの三重項エネルギーよりも大きい三重項エネルギーを有するホール輸送ホスト化合物;
(c)分子量が2,000未満であり、少なくとも2.0eVのバンドギャップを有し、且つ前記リン光ドーパントの三重項エネルギーよりも大きい三重項エネルギーを有する広いバンドギャップを有するホスト化合物;
ここで、前記(b)の前記ホール輸送ホスト化合物が有機金属錯体である。 - 第1の電極を提供することと;
前記第1の電極の上に有機電界発光層を形成することと;
前記有機電界発光層の上に第2の電極を形成することを含み、
前記有機電界発光層が、リン光ドーパントと、次の3つの異なる化合物(a)、(b)及び(c)を含むホスト材料とを含むことを特徴とする有機発光デバイスを作製する方法:
(a)前記リン光ドーパントの三重項エネルギーよりも大きい三重項エネルギーを有する電子輸送ホスト化合物;
(b)前記リン光ドーパントの三重項エネルギーよりも大きい三重項エネルギーを有するホール輸送ホスト化合物;
(c)分子量が2,000未満であり、少なくとも2.0eVのバンドギャップを有し、且つ前記リン光ドーパントの三重項エネルギーよりも大きい三重項エネルギーを有する広いバンドギャップを有するホスト化合物;
ここで、前記(b)の前記ホール輸送ホスト化合物が有機金属錯体である。 - 有機電界発光層が、ホスト材料の真空熱蒸着により形成される請求項15、及び16のいずれかに記載の方法。
- 有機電界発光層化合物の2つ以上が真空熱蒸着の前に予め混合される請求項17に記載の方法。
- 電子輸送ホスト材料(a)が、オキサジアゾール、ベンゾイミダゾール、トリアゾール、トリアジン、ベンゾチアゾール、又はカルバゾール化合物である請求項15、及び16のいずれかに記載の方法。
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KR20140033091A (ko) | 2014-03-17 |
US9142791B2 (en) | 2015-09-22 |
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