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WO2017164683A1 - Cellule solaire organique et son procédé de fabrication - Google Patents

Cellule solaire organique et son procédé de fabrication Download PDF

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Publication number
WO2017164683A1
WO2017164683A1 PCT/KR2017/003174 KR2017003174W WO2017164683A1 WO 2017164683 A1 WO2017164683 A1 WO 2017164683A1 KR 2017003174 W KR2017003174 W KR 2017003174W WO 2017164683 A1 WO2017164683 A1 WO 2017164683A1
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WO
WIPO (PCT)
Prior art keywords
solar cell
organic solar
barrier layer
substrate
electrode
Prior art date
Application number
PCT/KR2017/003174
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English (en)
Korean (ko)
Inventor
김광수
문정열
조근상
갈진하
박홍관
Original Assignee
코오롱인더스트리 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from KR1020170036345A external-priority patent/KR20170113193A/ko
Application filed by 코오롱인더스트리 주식회사 filed Critical 코오롱인더스트리 주식회사
Publication of WO2017164683A1 publication Critical patent/WO2017164683A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/0248—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
    • H01L31/0256—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by the material
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
    • H10K30/80—Constructional details
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • the present invention relates to an organic solar cell having improved durability, stability and performance, and a method of manufacturing the same.
  • Solar cells are devices that convert light energy into electrical energy using the photovoltaic effect.
  • various flexible devices have attracted attention as next-generation electric and electronic devices, and solar cells are also required to satisfy the flexibility of such devices.
  • Organic thin film solar cells (hereinafter referred to as "organic solar cells”) can satisfy the flexibility of the flexible device, and has the advantage that can significantly reduce the material cost compared to inorganic solar cells.
  • the organic solar cell has an advantage that the low-cost large-area device can be manufactured through spin coating, screen printing, inkjet, microcontact printing, etc. due to the easy processability of the organic material of the material.
  • the various polymers constituting the organic solar cell have a significant decrease in physical properties when contacted with oxygen and moisture, resulting in a problem of rapidly decreasing the efficiency of the solar cell. Therefore, when manufacturing the organic solar cell, it is necessary to block the organic solar cell module which can exhibit the function of the organic solar cell independently from the external environment containing oxygen and moisture, and generally, one or both surfaces of the optical transparent adhesive (The organic solar cell module is protected from oxygen and moisture by laminating and sealing a transparent barrier film coated with an optical clear adhesive (OCA).
  • OCA optical clear adhesive
  • the oxygen and moisture present in the empty space formed by the step between the substrate and the module are not limited to the module and are not located on the substrate.
  • the pressure applied during the laminating process adversely affects the internal interface of the organic solar cell of the multilayer thin film structure, which causes degradation of performance, lifespan, and reliability of the organic solar cell.
  • Korean Patent Laid-Open Publication No. 10-2016-0000192 includes a film border portion in which a first barrier film and a second barrier film are bonded to each other, and a portion of the film border portion is formed between the first barrier film and the second barrier film.
  • a solar cell module package formed in a concave-convex shape in the horizontal direction of the adhesive film to increase the adhesion to suppress the penetration of moisture and oxygen.
  • the patent improves the sealing performance of the solar cell to some extent, but its effect is not sufficient, and a lot of time and cost are required due to the addition of processing and processing steps of the barrier film. Therefore, it is necessary to further develop an organic solar cell having excellent reliability and performance by effectively inhibiting penetration of external moisture and oxygen.
  • the substrate includes a unit module positioned on the substrate between the battery module and the second barrier layer and has a first barrier layer formed over the entire surface of the substrate.
  • Part of the module is not located in the upper part, that is, the empty space between the unit module is filled with oxygen and moisture is not included in the organic solar cell has excellent efficiency and reliability, it can be confirmed that the process stability can be improved It was.
  • an object of the present invention is to provide an organic solar cell having excellent durability, stability and performance.
  • the present invention is a substrate; A battery module in which a plurality of unit modules are formed in a predetermined pattern on the substrate; A first barrier layer including the plurality of unit modules and formed over the entire surface of the substrate; And it provides an organic solar cell comprising a second barrier layer formed on the first barrier layer.
  • the organic solar cell of the present invention includes a unit module disposed on a substrate, and includes a first barrier layer formed over the entire surface of the organic solar cell to prevent moisture and oxygen from being contained in the organic solar cell.
  • the present invention provides an organic solar cell having excellent durability and driving efficiency by buffering the pressure applied to the organic solar cell to prevent adverse effects on the interface between the photoactive layer and the hole transport layer having poor adhesion.
  • FIG. 1 is a cross-sectional view schematically showing the structure of an organic solar cell according to the prior art.
  • FIG. 2 is a cross-sectional view schematically showing the structure of an organic solar cell according to an embodiment of the present invention.
  • FIG. 3 is a cross-sectional view schematically showing the structure of an organic solar cell according to another embodiment of the present invention.
  • each cell that absorbs light and converts it into electrical energy is arranged in a predetermined pattern to form a single unit. It's called a module.
  • one module may be separated by itself, and each of these modules may constitute one organic solar cell. At this time, since the power generated by one module is weak, most of the modules are connected to form an organic solar cell.
  • the conventional organic solar cell 100 arranges a plurality of unit modules 2 on a substrate 1 in a predetermined pattern and then seals the barrier layer 4 by laminating it.
  • the barrier layer 4 includes an adhesive layer 4-1 including an optically transparent adhesive on one surface.
  • This method may provide an effect of simplifying the sealing process, but the barrier layer 4 is adhered only to the top surface of the battery module and is not adhered to the unit module 2 and the substrate 1 so that the By the arrangement and the step between the substrate 1 and the unit module 2, a constant empty space A is formed. In this case, moisture and oxygen present in the empty space A are included in the organic solar cell as it is, thereby degrading the performance and lifespan of the organic solar cell.
  • the pressure applied when the barrier layer 4 is laminated causes a problem of interfacial bonding between organic solar cells having a multilayer thin film structure. Specifically, as the pressure is applied during the laminating process and the pressure is released, the bonding failure between the photoactive layer and the hole transport layer having poor interfacial adhesion force occurs in the organic solar cell, thereby degrading the performance and lifespan of the organic solar cell.
  • the present invention includes a unit module located on the substrate and has a first barrier layer formed over the entire surface of the substrate, thereby removing the empty space (A of FIG. 1) formed during the sealing of the conventional organic solar cell, thereby forming the inside of the organic solar cell.
  • the first barrier layer serves as a buffer layer to buffer the pressure applied when the second barrier layer is formed, thereby improving reliability of durability, stability, and the like of the organic solar cell.
  • FIG. 2 is a cross-sectional view schematically showing the structure of an organic solar cell according to an embodiment of the present invention.
  • an organic solar cell 200 includes a substrate 10; A battery module in which a plurality of unit modules 20 are formed in a predetermined pattern on the substrate 10; A first barrier layer 30 including the plurality of unit modules 20 and formed over the entire upper surface of the substrate 10; And a second barrier layer 40 formed on the first barrier layer 30.
  • the substrate 10 is not particularly limited as long as it is a material having transparency so that light can be transmitted.
  • the substrate 10 may be a glass substrate or a plastic substrate, preferably a flexible substrate.
  • the flexible substrate is preferably a polymer flexible substrate
  • the polymer flexible substrate may include polyethylene terephthalate (PET), polyethylene sulfone (PES), polyethylene naphthalate (PEN), polycarbonate (PC), and polymethylmethacrylate.
  • PMMA Acrylate
  • PI polyimide
  • EVA ethylene vinyl acetate
  • APET polypropylene terephthalate
  • PPT polyethylene terephthalate glycerol
  • PCTG polycyclohexylenedimethylene Terephthalate
  • TAC modified triacetylcellulose
  • COP cycloolefin polymer
  • COC cycloolefin copolymer
  • DCPD dicyclopentadiene polymer
  • CPD dicyclopentadiene polymer
  • CPD dicyclopentadiene polymer
  • CPD dicyclopentadiene polymer
  • CPD dicyclopentadiene polymer
  • CPD dicyclopentadiene polymer
  • CPD dicyclopentadiene polymer
  • CPD dicyclopentadiene polymer
  • CPD dicyclopentadiene polymer
  • CPD dicyclopentadiene polymer
  • PAR polyarylate
  • PAR polyetherimide
  • the shape of the substrate 10 may be a polygon such as a circle or a triangle, a square.
  • the substrate 10 may have a transmittance of at least 70% or more, specifically 80% or more, in the visible light wavelength range of about 400 to 750 nm.
  • the thickness of the substrate 10 is not particularly limited and may be appropriately determined depending on the intended use, but may be 1 to 500 ⁇ m.
  • the unit module 20 functions as an independent battery for converting light passing through the substrate 10 into electrical energy, wherein the unit module 20 includes two or more organic solar cell cells, and the organic solar cell
  • the cell includes a first electrode, a second electrode, and a photoactive layer interposed therebetween.
  • the organic solar cell may have a normal structure or an inverted structure.
  • the first electrode is a positive electrode
  • the second electrode is a negative electrode
  • the first electrode is a negative electrode
  • the second electrode is a positive electrode
  • the organic solar cell may further include a hole transport layer and an electron transport layer as necessary.
  • the first electrode may be an anode or a cathode.
  • the organic solar cell manufactured according to the embodiment of the present invention has an inverted structure, and thus the first electrode layer is a cathode.
  • the first electrode is formed on the substrate described above, and serves as a path for light passing through the substrate to reach the photoactive layer, and thus has a high transparency and uses a conductive material having a high work function of about 4.5 eV or more and a low resistance. It is preferable.
  • the first electrode may be formed of indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), indium tin zinc oxide (Indium Tin Zinc Oxide); ITZO), Ga-doped Zinc Oxide (GZO), Al-doped Zinc Oxide (AZO), F-doped Tin Oxide (FTO), Zinc Oxide (Zinc) Tin Oxide (ZTO), Indium Gallium Oxide (IGO), ZnO-Ga 2 O 3 , ZnO-Al 2 O 3 , SnO 2 -Sb 2 O 3 and combinations thereof electrode; Organic transparent electrodes such as conductive polymers, graphene thin films, graphene oxide thin films, and carbon nanotube thin films; Alternatively, an organic-inorganic bonded transparent electrode such as a carbon nanotube thin film bonded to a metal may be used.
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • IGZO indium gallium zinc oxide
  • the thickness of the first electrode may be 10 to 3000 nm.
  • the first electrode may be formed on a substrate according to a conventional method.
  • the cathode may be formed on one surface of the substrate by thermal vapor deposition, electron beam deposition, RF or magnetron sputtering, chemical vapor deposition, or a similar method.
  • the method may also be used to pretreat the surface of the substrate.
  • the second electrode may be a cathode or an anode. In one embodiment of the present invention, the second electrode layer is an anode.
  • the second electrode is a metal electrode layer having a low work function
  • the metal is, for example, silver (Ag), copper (Cu), gold (Au), platinum (Pt), titanium (Ti), aluminum ( Metal particles such as Al), nickel (Ni), zirconium (Zr), iron (Fe), and manganese (Mn); Or a precursor containing the metal element, for example, silver nitrate (AgNO 3 ), Cu (HAFC) 2 (Cu (hexafluoroacetylacetonate) 2 ), Cu (HAFC) (1,5-Cyclooctanediene), Cu (HAFC) (1, 5-Dimethylcyclooctanediene), Cu (HAFC) (4-Methyl-1-pentene), Cu (HAFC) (Vinylcyclohexane), Cu (HAFC) (DMB), Cu (TMHD) 2 (Cu (tetramethylheptanedionate) 2 ), DMAH ( dimethylaluminum hydride
  • the thickness of the second electrode may be 10 to 5000 nm.
  • the second electrode may be formed by a conventional method known in the art. For example, it may be formed through screen printing, gravure printing, gravure offset printing, thermal vapor deposition, electron beam deposition, RF or magnetron sputtering, chemical deposition, and the like.
  • the photoactive layer is positioned between the first electrode and the second electrode described above, and those known in the art may be used without limitation.
  • the photoactive layer has a bulk heterojunction (BHJ) structure in which a hole acceptor and an electron acceptor are mixed. It is also possible to use a bilayer type.
  • BHJ bulk heterojunction
  • the hole acceptor is an organic semiconductor such as an electrically conductive polymer or an organic low molecular semiconductor material.
  • the electrically conductive polymer is a polythiophene, polyphenylene vinylene, polyfluorene, polypyrrole. ), Copolymers thereof, and derivatives thereof.
  • the organic low molecular weight semiconductor material is any one selected from the group consisting of pentacene, anthracene, tetratracene, perylene, oligothiophene, derivatives thereof, and combinations thereof It can be one.
  • the hole receptor is poly-3-hexylthiophene (P3HT), poly-3-octylthiophene (poly-3-octylthiophene, P3OT), polyparaphenylenevinylene [poly- p-phenylene vinylene, PPV], poly (dioctylfluorene) [poly (9,9′-dioctylfluorene)], poly (2-methoxy, 5- (2-ethyl-hexyloxy) -1,4- Phenylenevinylene) [poly (2-methoxy, 5- (2-ethyl-hexyloxy) -1,4-phenylene vinylene, MEH-PPV], poly (2-methyl, 5- (3 ', 7'-dimethyl Octyloxy))-1,4-phenylenevinylene [poly (2-methyl, 5- (3 ', 7'-dimethyloctyloxy))-1,4-phenyleneviny
  • the electron acceptor is a fullerene derivative such as fullerene (C 60 ), C 70 , C 76 , C 78 , C 80 , C 82 , C 84 , CdS, CdSe, CdTe, ZnSe, (6,6) -phenyl- C61-butyric acid methyl ester [(6,6) -phenyl-C61-butyric acid methyl ester; PCBM], (6,6) -phenyl-C71-butyric acid methyl ester [(6,6) -phenyl-C71-butyric acid methyl ester; C70-PCBM], (6,6) -thienyl-C61-butyric acid methyl ester [(6,6) -thienyl-C61-butyric acid methyl ester; ThCBM], carbon nanotubes, and combinations thereof.
  • fullerene C 60
  • the electron acceptor (6,6) -phenyl -C 61 - butyric rigs Acid methyl ester ((6,6) -phenyl-C 61 -butyric acid methyl ester, PCBM), (6,6) - phenyl- C 71 - butyric rigs Acid methyl ester ((6,6) -phenyl-C 71 -butyric acid methyl ester, C 70 -PCBM), (6,6) - thienyl -C 61 - butyric rigs Acid methyl ester (( 6,6) -thienyl-C 61 -butyric acid methyl ester (ThCBM) and carbon nanotubes may include one or more selected from the group consisting of.
  • the composition for forming the photoactive layer more preferably comprises a mixture of P3HT and PCBM as the electron acceptor, the mixing weight ratio of the P3HT and PCBM is 1: 0.1 to 1: 2, preferably 1: 1.5 to 1: 2.
  • the organic solar cell may further include an electron transport layer between the first electrode and the photoactive layer, and a hole transport layer between the photoactive layer and the second electrode.
  • the electron transport layer allows electrons generated in the photoactive layer to be easily transferred to the adjacent first electrode.
  • the electron transport layer may be used a known material without limitation, for example, aluminum tris (8-hydroxyquinoline), Alq 3 , lithium fluoride (LiF), lithium complex (8) -hydroxy-quinolinato lithium (Liq), a nonconjugated polymer, a nonconjugated polymer electrolyte, a conjugated polymer electrolyte, or an n-type metal oxide.
  • the n-type metal oxide may be, for example, TiO x , ZnO or Cs 2 CO 3 .
  • a self-assembled thin film of a metal layer may be used as the electron transporting layer.
  • the hole transport layer helps to move holes generated in the photoactive layer to the adjacent second electrode.
  • the hole transport layer may be a known material without limitation, and, for example, poly (3,4-ethylenedioxythiophene) (PEDOT), poly (styrenesulfonate) (PSS), polyaniline, phthalocyanine, pentacene, poly Diphenyl acetylene, poly (t-butyl) diphenylacetylene, poly (trifluoromethyl) diphenylacetylene, copper phthalocyanine (Cu-PC) poly (bistrifluoromethyl) acetylene, polybis (t-butyldiphenyl ) Acetylene, poly (trimethylsilyl) diphenylacetylene, poly (carbazole) diphenylacetylene, polydiacetylene, polyphenylacetylene, polypyridineacetylene, polymethoxyphenylacetylene, polymethylphenylacetylene, poly (t-butyl) phenyl And one or more hole transport materials selected from ace
  • one second electrode forms an electrically connected structure with a first electrode of a neighboring cell. Accordingly, the plurality of organic solar cells included in one unit module are electrically connected in series. Take the structure
  • a plurality of unit modules 20 including the above-described organic solar cell are disposed on the substrate 10 in a predetermined pattern, and the unit modules 20 are continuously spaced by a predetermined pitch. Located.
  • the pitch between the unit modules 20 may be 1 to 5,000 ⁇ m, preferably 50 to 2,000 ⁇ m.
  • the pattern of the unit module 20 may be one or more forms selected from the group consisting of stripes, grids, waves, zigzag, rhombus, circle and polygon.
  • the first barrier layer 30 includes the plurality of unit modules 20 and is formed over the entire surface of the substrate 10.
  • the first barrier layer 30 is formed in close contact with the exposed portion of the substrate 10 in which the above-described unit module 20 and the unit module 20 are not disposed.
  • the void space formed by the step between the substrates is removed to completely block the inflow of water and oxygen into the organic solar cell.
  • the first barrier 30 serves to protect the organic solar cell constituting the unit module 20 by buffering the pressure applied during the stacking of the second barrier layer 40 to be described later. Accordingly, the organic solar cell according to the present invention can secure improved durability, stability and performance compared to the conventional organic solar cell.
  • the first barrier layer 30 is a liquid barrier material that is curable through heat or light, and the material is not particularly limited.
  • the liquid barrier material may be used without particular limitation as long as it can be prepared in a liquid state by melting or dissolving it in a solvent.
  • the first barrier layer 30 may be formed by applying and curing a coating composition including a thermosetting resin or a thermoplastic resin having a viscosity in the range of 1,000 to 4,000 cps.
  • thermosetting resin For example, a polyurethane, a phenol resin, a melamine resin, a urea resin, an unsaturated polyester resin, a diallyl phthalate resin, a silicone resin, an epoxy resin, etc. are mentioned.
  • thermoplastic resin examples include polyethylene, polypropylene, polyisoprene, polyester (polyethylene terephthalate, polybutylene terephthalate, etc.), polybutadiene, styrene resin, impact resistant polystyrene, acrylonitrile-styrene resin (AS Resin), acrylonitrile-butadiene-styrene resin (ABS resin), methyl methacrylate-butadiene-styrene resin (MBS resin), methyl methacrylate-acrylonitrile-butadiene-styrene resin (MABS resin), acrylo Nitrile-acrylic rubber-styrene resin (AAS resin), polymethyl (meth) acrylate, polycarbonate, modified polyphenylene ether (PPE), polyamide, polyphenylene sulfide, polyimide, polyether ether ketone, Polysulfone, polyarylate, polyetherketone, polyethernitrile, polythio
  • the coating composition for forming the first barrier layer 30 may further include various additives if necessary.
  • the additive may be a crosslinking agent, a crosslinking accelerator, a coupling agent, an ultraviolet absorber, a reinforcing agent, an antioxidant, an antioxidant, a viscosity modifier, conductive particles, and the like.
  • the first barrier layer 30 is formed through a wet coating process of applying a coating composition to form a coating film.
  • the coating is selected from slot die coating method, bar coating method, Meyer bar coating method, spin coating method, comma coating method, curtain coating method, micro gravure coating method, inkjet coating method, spray coating method or doctor blade coating method and the like. It can be formed through one or more methods.
  • a curing process using heat or light is performed, wherein the temperature or time may vary depending on the material of the first barrier layer 30.
  • the first barrier layer 30 may have an adhesive force through curing, in which case the second barrier layer to be described later does not need a separate adhesive layer to thin the organic solar cell and It has the advantage of flexibility.
  • the total thickness of the first barrier layer 30 from the top of the substrate may be a thickness of the battery module + 1 to 50 ⁇ m, preferably a thickness of the battery module + 5 to 40 ⁇ m.
  • the first barrier layer may have a thickness of 6 to 150 ⁇ m, preferably 10 to 140 ⁇ m, from the top of the substrate.
  • the first barrier layer 30 may be formed in a thickness of 1 to 50 ⁇ m range, preferably 5 to 40 ⁇ m from the top of the battery module. If the thickness of the first barrier layer 30 from the top of the battery module is less than 1 ⁇ m, the upper surface of the first barrier layer 30 is difficult to planarize and the above-described effects cannot be obtained. On the contrary, when the thickness exceeds 50 ⁇ m, the thickness of the organic solar cell is increased and cracks are generated during the manufacturing process, thereby degrading quality and performance.
  • the second barrier layer 40 is formed on the first barrier layer 30 and seals the battery module on the substrate to block the external environment including oxygen and moisture.
  • the second barrier layer 40 may use a conventional material known in the art to which the present invention pertains, and is not particularly limited.
  • the second barrier layer 40 may be made of an insulating material made of a transparent polymer, and polyethylene terephthalate (PET), polycarbonate (PC), or the like may be used.
  • the thickness of the second barrier layer 40 may be 25 to 50 ⁇ m. When the thickness of the second barrier layer 40 falls within the above range, a sufficient sealing effect may be ensured.
  • the second barrier layer 40 is formed through a laminating process, and the laminating process uses a conventional method known in the art.
  • FIG. 3 is a cross-sectional view schematically showing the structure of an organic solar cell according to another embodiment of the present invention.
  • an organic solar cell 300 is disposed between the first barrier layer 30 and the second barrier layer 40 of the organic solar cell 200 of FIG. 2.
  • the adhesive layer 41 further includes.
  • the adhesive layer 41 is for firmly attaching the first barrier layer 30 and the second barrier layer 40, and is not particularly limited as long as the adhesive layer 41 has transparency and adhesiveness.
  • the adhesive layer 41 may include pressure sensitive adhesives (PSA), optical transparent adhesives (OCA), or the like.
  • the thickness of the adhesive layer 41 may be 10 to 50 ⁇ m.
  • the substrate 10, the unit module 20, the first barrier layer 30 and the second barrier layer 40 of the organic solar cell 300 according to another embodiment of the present invention are in one embodiment of the present invention As described above.
  • the organic solar cell according to the present invention includes a unit module on a substrate and has a first barrier layer formed over the entire surface of the organic solar cell, thereby effectively blocking external oxygen and moisture as compared to the conventional organic solar cell, thereby resulting in an organic solar cell.
  • the performance and life of the organic solar cell is improved.
  • the first barrier layer serves as a buffer layer to buffer the pressure applied when the second barrier layer is formed, the organic solar cell may exhibit excellent durability and stability.
  • ten unit modules including ten organic solar cells in which an anode, an electron transport layer, a photoactive layer, a hole transport layer, and a cathode are stacked in series on a substrate are arranged at a pitch of 2,000 ⁇ m.
  • an epoxy resin liquid barrier material (LP655, LP655) was coated over the entire surface of the substrate to form a first barrier layer 30 ⁇ m higher than the unit module.
  • An organic solar cell was manufactured by attaching a second barrier layer (50 ⁇ m thick) having an adhesive layer (50 ⁇ m thick) formed on an upper portion of the first barrier layer.
  • An organic solar cell was manufactured in the same manner as in Example 1, except that the first barrier layer of Example 1 was not formed.
  • Example 1 In order to test the reliability of the organic solar cells manufactured in Example 1 and Comparative Example 1, a light soaking (L.S.) test was performed. Specifically, the same solar light was irradiated to the organic solar cell, and the power conversion efficiency (PCE) was evaluated over time.
  • L.S. light soaking

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  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
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Abstract

La présente invention porte sur une cellule solaire organique et son procédé de fabrication et, plus particulièrement, sur une cellule solaire organique et son procédé de fabrication, la cellule solaire organique comprenant : un substrat; un module de cellule incluant des modules unitaires multiples agencés sur le substrat pour former un motif préétabli; une première couche de barrière incluant les modules unitaires multiples et formée sur toute la surface du substrat; et une deuxième couche de barrière formée sur la première couche de barrière. La cellule solaire organique selon la présente invention peut bloquer efficacement l'humidité et l'oxygène externes et peut améliorer sa longévité, et ainsi, sa performance et sa fiabilité peuvent être significativement améliorées.
PCT/KR2017/003174 2016-03-25 2017-03-24 Cellule solaire organique et son procédé de fabrication WO2017164683A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2016-0036328 2016-03-25
KR20160036328 2016-03-25
KR1020170036345A KR20170113193A (ko) 2016-03-25 2017-03-22 유기태양전지 및 이의 제조방법
KR10-2017-0036345 2017-03-22

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