WO2014051182A1 - 광 활성층, 이를 포함한 유기 태양 전지 및 이의 제조 방법 - Google Patents
광 활성층, 이를 포함한 유기 태양 전지 및 이의 제조 방법 Download PDFInfo
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- WO2014051182A1 WO2014051182A1 PCT/KR2012/007932 KR2012007932W WO2014051182A1 WO 2014051182 A1 WO2014051182 A1 WO 2014051182A1 KR 2012007932 W KR2012007932 W KR 2012007932W WO 2014051182 A1 WO2014051182 A1 WO 2014051182A1
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- 125000001567 quinoxalinyl group Chemical class N1=C(C=NC2=CC=CC=C12)* 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical group C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- 125000006617 triphenylamine group Chemical group 0.000 description 1
- 125000005580 triphenylene group Chemical group 0.000 description 1
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
Images
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- 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
- H10K30/87—Light-trapping means
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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- H10K71/40—Thermal treatment, e.g. annealing in the presence of a solvent vapour
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- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
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- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/656—Aromatic compounds comprising a hetero atom comprising two or more different heteroatoms per ring
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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
- H01L2031/0344—Organic materials
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- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/30—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising bulk heterojunctions, e.g. interpenetrating networks of donor and acceptor material domains
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- H10K85/10—Organic polymers or oligomers
- H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
- H10K85/113—Heteroaromatic compounds comprising sulfur or selene, e.g. polythiophene
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- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/20—Carbon compounds, e.g. carbon nanotubes or fullerenes
- H10K85/211—Fullerenes, e.g. C60
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- 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
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present specification relates to a photoactive layer, an organic solar cell using the same, and a method of manufacturing the same.
- Electron-hole pairs or excitons are formed by absorbing light in the photoactive layer composed of organic polymers.
- the electron-hole pair moves to the interface between the copolymer and the C60 fullerene derivative or the C70 fullerene derivative and is separated into electrons and holes, and then electrons are moved to the metal electrode and holes are moved to the transparent electrode to generate electrons.
- the present specification is to provide an organic solar cell having an improved efficiency and a method of manufacturing the same, and a photoactive layer used in the organic solar cell.
- An organic material layer provided between the first electrode and the second electrode and including a photoactive layer
- the photoactive layer includes an electron acceptor and an electron donor
- the electron acceptor and electron donor provide an organic solar cell that is swollen with a non-solvent.
- the present specification is a first electrode
- An organic material layer provided between the first electrode and the second electrode and including a photoactive layer
- the photoactive layer includes an electron acceptor and an electron donor
- the present specification is a first electrode
- An organic material layer provided between the first electrode and the second electrode and including a photoactive layer
- the photoactive layer includes an electron acceptor and an electron donor
- the electron acceptor and electron donor are swollen with a non-solvent
- an organic solar cell in which the efficiency of the organic solar cell is increased by 110 to 200% compared with the case of including an electron accepting material and an electron donor before swelling with a non-solvent.
- the present specification provides a photoactive layer comprising an electron acceptor and an electron donor, wherein the electron acceptor and the electron donor are swelled with a non-solvent.
- the present specification comprises the steps of preparing a substrate
- It provides a method of manufacturing an organic solar cell comprising the step of forming a second electrode on the organic material layer.
- the photoactive layer according to one embodiment of the present specification can be manufactured through a simple process of non-solvent swelling treatment and, if necessary, heat treatment.
- the photoactive layer through the above treatment is highly conductive and stable.
- the photoactive layer according to the exemplary embodiment of the present specification has a good light absorption rate and forms a stabilized molecular structure through self organization of the electron acceptor and the electron donor. Therefore, the organic solar cell including the photoactive layer according to the exemplary embodiment of the present specification may exhibit excellent characteristics such as an increase in open voltage and an increase in efficiency.
- the photoactive layer according to the exemplary embodiment of the present specification has a high light absorption rate, a long conjugation length, a high charge mobility, a low resistance with an electrode, and an improvement in morphology. And the efficiency of the device can be improved.
- FIG. 1 is a diagram illustrating a method of manufacturing a photoactive layer according to one embodiment of the present specification.
- Figure 2 is a diagram showing the J-V curve of Example 1 and Comparative Examples 1 to 3.
- FIG. 3 is a diagram showing absorption spectra of Example 1 and Comparative Examples 1 to 3.
- FIG. 3 is a diagram showing absorption spectra of Example 1 and Comparative Examples 1 to 3.
- Example 4 is a graph showing X-ray diffraction (X-ray diffraction) of Example 1 and Comparative Examples 1 to 3.
- FIG. 5 is a graph showing absorption spectra of FT-IR of Comparative Examples 1 to 3.
- FIG. 5 is a graph showing absorption spectra of FT-IR of Comparative Examples 1 to 3.
- FIG. 6 is a graph showing Auger electron spectroscopy of Example 1 and Comparative Examples 1 to 3.
- FIG. 6 is a graph showing Auger electron spectroscopy of Example 1 and Comparative Examples 1 to 3.
- Example 7 is a view observed with an atomic force microscope (AFM) of Example 1 and Comparative Examples 1 to 3.
- AFM atomic force microscope
- first electrode A second electrode facing the first electrode; And an organic material layer provided between the first electrode and the second electrode, the organic material layer including a photoactive layer, wherein the photoactive layer includes an electron acceptor and an electron donor, and the electron acceptor and the electron donor are nonsolvents. It provides an organic solar cell that is swollen with.
- the non-solvent means that the electron donor or the electron accepting substance is dissolved or not reacted.
- the non-solvent causes a swelling phenomenon when applied to the photoactive layer, so that the non-solvent penetrates into the photoactive layer.
- the nonsolvent penetration distance into the photoactive layer is 5% or more and less than 50% of the thickness of the photoactive layer. In another embodiment, the nonsolvent penetration distance into the photoactive layer is 5-30% of the thickness of the photoactive layer.
- the non-solvent may select a kind, a processing method and an amount of the non-solvent at the time of coating on the photoactive layer.
- the penetration distance of the non-solvent into the photoactive layer is at least 5% and less than 50% of the thickness of the photoactive layer.
- the nonsolvent penetration distance into the photoactive layer is 50% or more of the thickness of the photoactive layer, separation may occur from the substrate on which the photoactive layer is applied.
- the interface area between the photoactive layer and the electrode may increase, and the contact characteristics may be improved, thereby improving the performance of the device.
- the non-solvent swelling method includes a method of applying a non-solvent on top of the photoactive layer and performing spin coating or drop coating.
- the interface between the photoactive layer, the photoactive layer, and the electrode can be simultaneously controlled, which is advantageous for improving the morphology of the photoactive layer.
- the manufacturing process is relatively simple.
- the applied non-solvent penetrates into the space of the photoactive layer, widens the space between the polymer chains, and increases the mobility of the polymer chains.
- the mobility of the polymer chain is increased, the self-organization of the molecular structure is called to form an ordered molecular structure.
- the conjugation length is increased, the mobility of charge is increased, and the optical properties are increased, thereby providing a high light absorption rate, contributing to the efficiency increase.
- the non-solvent is applied for at least 10 minutes of the non-solvent swelling method. In another embodiment, the non-solvent is applied for 10 to 40 minutes.
- the nonsolvent penetration distance into the photoactive layer can be increased.
- Application within 40 minutes can prevent the non-solvent penetration into the photoactive layer from exceeding 50% of the thickness of the photoactive layer, thereby preventing the peeling phenomenon from progressing.
- the electron accepting material and the electron donor provide an organic solar cell that is heat-treated before, simultaneously or after being swollen with a non-solvent.
- the electron acceptor and electron donor may be heat treated prior to swelling with a nonsolvent.
- the electron acceptor and the electron donor may be heat treated after being swollen with a non-solvent.
- the electron accepting material and the electron donor may be heat treated at the same time as the non-solvent is swollen.
- the heat that is heated during swelling by the nonsolvent increases the nonsolvent penetration distance into the photoactive layer, thereby shortening the nonsolvent treatment time, and subsequently removing heat treatment or nonsolvent by spin coating or blowing. This simplifies the process and there is a time and / or cost advantage.
- the non-solvent is selected from the group consisting of water, alkanes, halohydrocarbons, ethers, ketones, esters, nitrogen compounds, sulfur compounds, acids, alcohols, phenols and polyols.
- the alkane-based nonsolvent is n-butane, n-pentane, n-hexane, n-octane, isooctane, n-dodecane, dichloromethane, cyclohexane and methylcyclohexane in the group 1 or 2 or more is selected.
- the alkane-based nonsolvent is dichloromethane.
- the alkane-based nonsolvent is insoluble in electron donors such as P3HT, but is selectively soluble in electron acceptors such as PCBM.
- electron donors such as P3HT
- electron acceptors such as PCBM.
- the halohydrocarbon-based non-solvent is chloromethane, dichloromethane, methylene chloride, 1,1-dichloroethylene, ethylenedichloride, crawlroform, 1,1-dichloroethane, trichloroethylene, carbon 1 or 2 or more is selected from the group consisting of tetrachloride, chlorobenzene, o-dichlorobenzene and 1,1,2-trichlorotrifluoranthene.
- the ether-based non-solvent is selected from the group consisting of tetrahydrofuran, 1,4-dioxane, diethyl ether, and dibenzyl ether.
- the boiling point is low, the solvent is easy to remove after the non-solvent swelling method, the process is simple, there is an advantageous time and cost.
- the ketone non-solvent is acetone, methyl ethyl ketone, cyclohexanone, diethyl ketone, acetophenone, methyl isobutyl ketone, methyl isoamyl ketone, isophorone and di- (isobutyl)
- One or two or more are selected from the group consisting of ketones.
- the ester non-solvent is ethylene carbonate, methyl acetate, ethyl formate, propylene-1,2-carbonate, ethyl acetate, diethyl carbonate, diethyl sulfate, n-butyl acetate, isobutyl acetate, 1 or 2 or more is selected from the group consisting of 2-ethoxyethyl acetate, isoamyl acetate and isobutyl isobutylate.
- the nitrogen compound means a solvent in which an electron donor or an electron acceptor is not dissolved or reacted among compounds containing nitrogen.
- the nitrogen compound non-solvent is acetonitrile, propionitrile, nitromethane, nitroethane, 2-nitropropane, nitrobenzene, ethanolamine, ethylene diem me, pyridine, morpholine 1 or 2 or more are selected from the group consisting of, aniline, N-methyl-2-pyrrolidone, cyclohexylamine, quinoline, formamide and N, N-dimethylformamide.
- the sulfur compound means a solvent in which an electron donor or an electron accepting material does not melt or react among compounds containing sulfur.
- the sulfur compound non-solvent is selected from the group consisting of carbon disulfide, dimethyl sulfoxide and ethanethiol.
- the alcohol-based non-solvent includes methanol, ethanol, allyl alcohol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, isobutanol, benzyl alcohol, cyclohexanol, diacetone alcohol, At least one is selected from the group consisting of ethylene glycol monoethyl ether, diethylene glycol monoethyl ether, diethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether and 1-decanol.
- a dipole is formed between the photoactive layer and the electrode, which lowers the barrier for hole extraction, thereby increasing the voltage density.
- the non-solvent treatment and the formation of the buffer layer can be performed simultaneously, which has advantages in terms of time and cost of the process.
- the acid non-solvent is selected from the group consisting of formic acid, acetic acid, benzene acid, oleic acid, stearic acid.
- ionization proceeds to the electron donor to lower the interfacial charge collection barrier to increase the current density or to increase the wettability when the water-soluble buffer material is applied later.
- the phenolic nonsolvent is selected from the group consisting of phenol, resorcinol, m-cresol and methyl salicylate.
- the polyol-based non-solvent is selected from the group consisting of ethylene glycol, glycerol, propylene glycol, diethylene glycol, triethylene glycol and dipropylene glycol.
- the nonsolvent is a nitrogen compound nonsolvent.
- the nonsolvent is acetonitrile.
- the nonsolvent is water.
- the nonsolvent is an alkane-based nonsolvent.
- the nonsolvent is a halohydrocarbon-based nonsolvent.
- the nonsolvent is an ether based nonsolvent.
- the non-solvent is a ketone non-solvent.
- the nonsolvent is an ester nonsolvent.
- the nonsolvent is a sulfur compound nonsolvent.
- the nonsolvent is an acid nonsolvent.
- the nonsolvent is an alcoholic nonsolvent.
- the nonsolvent is a phenolic nonsolvent.
- the nonsolvent is a polyol-based nonsolvent.
- the nonsolvent is selected from the group consisting of alkanes, ethers, alcohols and acids.
- the temperature of the heat treatment is not less than the glass transition temperature (Tg) of the electron donor material or less than the pyrolysis temperature.
- the heat treatment temperature is less than the glass transition temperature of the electron donor, self-organization of the electron donor may not occur well, and when the heat treatment temperature is above the pyrolysis temperature of the electron donor, the electron donor is destroyed. As a result, photocurrent generation characteristics may be degraded.
- the heat treatment synergizes with the effect of the non-solvent swelling method to further align the molecular structure, thereby increasing the conjugation length and the optical properties.
- the manufacturing process is relatively simple, there is an advantage in the process time and economics.
- the heat treatment time is 0 minutes to 5 hours. In another embodiment, the heat treatment time is 10 minutes to 3 hours. In another embodiment, the heat treatment time is 30 minutes to 45 minutes. The time can be adjusted according to the degree of self organization.
- the electron acceptor is a fullerene derivative or a nonfullerene derivative.
- the fullerene derivative is a C60 fullerene derivative or a C70 fuller derivative.
- the C60 fullerene derivative or C70 fullerene derivative is each independently hydrogen; heavy hydrogen; Halogen group; Nitrile group; Nitro group; Imide group; Amide group; Hydroxyl group; Substituted or unsubstituted alkyl group; A substituted or unsubstituted cycloalkyl group; Substituted or unsubstituted alkoxy group; Substituted or unsubstituted aryloxy group; Substituted or unsubstituted alkylthioxy group; Substituted or unsubstituted arylthioxy group; Substituted or unsubstituted alkyl sulfoxy group; Substituted or unsubstituted aryl sulfoxy group; Substituted or unsubstituted alkenyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted boron
- the fullerene derivative is selected from the group consisting of C76 fullerene derivatives, C78 fullerene derivatives, C84 fullerene derivatives and C90 fullerene derivatives.
- the C76 fullerene derivative, C78 fullerene derivative, C84 fullerene derivative and C90 fullerene derivative are each independently hydrogen; heavy hydrogen; Halogen group; Nitrile group; Nitro group; Imide group; Amide group; Hydroxyl group; Substituted or unsubstituted alkyl group; A substituted or unsubstituted cycloalkyl group; Substituted or unsubstituted alkoxy group; Substituted or unsubstituted aryloxy group; Substituted or unsubstituted alkylthioxy group; Substituted or unsubstituted arylthioxy group; Substituted or unsubstituted alkyl sulfoxy group; Substituted or unsubstituted aryl sulfoxy group; Substituted or unsubstituted alkenyl group; Substituted or unsubstituted silyl group
- the fullerene derivative has an ability to separate electron-hole pairs (exciton, electron-hole pair) and charge mobility compared to the non-fullerene derivative, which is advantageous for efficiency characteristics.
- the nonfullerene derivative has an LUMO energy level of -2.0 to -6.0 eV. In another exemplary embodiment, the nonfullerene derivative has a LUMO energy level of -2.5 to -5.0 eV. In another exemplary embodiment, the nonfullerene derivative has an LUMO energy level of -3.5 to -4.5 eV.
- the nonfullerene derivative is a single molecule or a polymer that is not spherical.
- the electron donor includes at least one electron donor; Or a polymer of at least one kind of electron acceptor and at least one kind of electron donor.
- the electron donor includes at least one kind of electron donor.
- the electron donor includes at least one kind of electron acceptor and at least one kind of electron donor polymer.
- the electron donor includes one or two or more from the group consisting of the following formulas.
- a is an integer of 0 to 4,
- b is an integer of 0 to 6
- c is an integer from 0 to 8
- d and e are each an integer of 0 to 3
- R 2 and R 3 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; Halogen group; Nitrile group; Nitro group; Imide group; Amide group; Hydroxyl group; Substituted or unsubstituted alkyl group; A substituted or unsubstituted cycloalkyl group; Substituted or unsubstituted alkoxy group; Substituted or unsubstituted aryloxy group; Substituted or unsubstituted alkylthioxy group; Substituted or unsubstituted arylthioxy group; Substituted or unsubstituted alkyl sulfoxy group; Substituted or unsubstituted aryl sulfoxy group; Substituted or unsubstituted alkenyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted boron group; Substi
- X 1 to X 3 are the same as or different from each other, and are each independently selected from the group consisting of CRR ', NR, O, SiRR', PR, S, GeRR ', Se and Te, Y 1 and Y 2 are each other The same or different, each independently selected from the group consisting of CR, N, SiR, P, and GeR,
- R and R ' are the same as or different from each other, and each independently hydrogen; heavy hydrogen; Halogen group; Nitrile group; Nitro group; Imide group; Amide group; Hydroxyl group; Substituted or unsubstituted alkyl group; A substituted or unsubstituted cycloalkyl group; Substituted or unsubstituted alkoxy group; Substituted or unsubstituted aryloxy group; Substituted or unsubstituted alkylthioxy group; Substituted or unsubstituted arylthioxy group; Substituted or unsubstituted alkyl sulfoxy group; Substituted or unsubstituted aryl sulfoxy group; Substituted or unsubstituted alkenyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted boron group; Substi
- the electron acceptor includes one or two or more from the group consisting of the following formulas.
- R 2 to R 5 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; Halogen group; Nitrile group; Nitro group; Imide group; Amide group; Hydroxyl group; Substituted or unsubstituted alkyl group; A substituted or unsubstituted cycloalkyl group; Substituted or unsubstituted alkoxy group; Substituted or unsubstituted aryloxy group; Substituted or unsubstituted alkylthioxy group; Substituted or unsubstituted arylthioxy group; Substituted or unsubstituted alkyl sulfoxy group; Substituted or unsubstituted aryl sulfoxy group; Substituted or unsubstituted alkenyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted boron group; Substi
- X 1 and X 2 are the same as or different from each other, and each independently, is selected from the group consisting of CRR ', NR, O, SiRR', PR, S, GeRR ', Se and Te, Y 1 to Y 4 are each The same or different, each independently selected from the group consisting of CR, N, SiR, P, and GeR,
- R and R ' are the same as or different from each other, and each independently hydrogen; heavy hydrogen; Halogen group; Nitrile group; Nitro group; Imide group; Amide group; Hydroxyl group; Substituted or unsubstituted alkyl group; A substituted or unsubstituted cycloalkyl group; Substituted or unsubstituted alkoxy group; Substituted or unsubstituted aryloxy group; Substituted or unsubstituted alkylthioxy group; Substituted or unsubstituted arylthioxy group; Substituted or unsubstituted alkyl sulfoxy group; Substituted or unsubstituted aryl sulfoxy group; Substituted or unsubstituted alkenyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted boron group; Substi
- the electron accepting material is a fullerene derivative. In another embodiment, the electron acceptor is a C 60 fullerene derivative.
- the electron accepting material is [6,6] -phenyl C-butyric acid methyl ester (PCBM).
- X 1 is S.
- the electron donor is poly (3-hexylthiophene) (P3HT).
- the electron acceptor is [6,6] -phenyl C-butyric acid methyl ester (PCBM) and the electron donor is poly (3-hexylthiophene) (P3HT).
- the nonsolvent is acetonitrile
- the electron acceptor is [6,6] -phenyl C-butyric acid methyl ester (PCBM)
- the electron donor is poly (3-hexylthiophene). (P3HT).
- the nonsolvent is acetonitrile
- the electron acceptor is [6,6] -phenyl C-butyric acid methyl ester (PCBM)
- the electron donor is poly (3-hexylthiophene).
- the heat treatment temperature is above the glass transition temperature and below the pyrolysis temperature of the donor material.
- the photoactive layer includes an electron acceptor and an electron donor.
- the electron accepting material and the electron donating material of the photoactive layer may form a bulk hetero junction (BHJ).
- the electron acceptor and the electron donor are mixed in a ratio (w / w) of 1:10 to 10: 1. In another embodiment, they are mixed in a weight ratio of 1: 7 to 2: 1. In another embodiment, the electron acceptor and the electron donor are mixed in a weight ratio of 1: 4 to 5: 3. In another embodiment, the electron acceptor and the electron donor are mixed in a weight ratio of 1: 0.4 to 1: 4.
- the electron accepting material When the electron accepting material is blended in less than 0.4 weight ratio, the content of crystallized electron accepting material is insufficient to cause the movement of generated electrons. When the electron accepting material exceeds 10 weight ratio, the amount of the electron donor that absorbs light is relatively high. There is a problem that the reduction is not efficient absorption of light.
- the efficiency of the organic solar cell provides an organic solar cell of 110 to 200% increase compared to the case containing an electron acceptor and an electron donor before swelling into a non-solvent.
- the electron acceptor and electron donor are heat treated before, simultaneously or after being swollen with a nonsolvent.
- the efficiency of the organic solar cell swells with a non-solvent and provides an organic solar cell that is 110 to 150% higher than the case containing the electron accepting material and the electron donor before heat treatment.
- FIG. 1 is a diagram illustrating a method of manufacturing a photoactive layer according to one embodiment of the present specification.
- Example 2 is a view showing a J-V curve of Example 1 and Comparative Examples 1 to 3. Referring to FIG. 2, the efficiency of the organic solar cell is increased when the non-solvent swelling method and the heat treatment are performed together with the non-solvent swelling method or the heat treatment alone. Able to know.
- FIG. 3 is a diagram showing absorption spectra of Example 1 and Comparative Examples 1 to 3.
- FIG. 3 As shown in FIG. 3, when the non-solvent swelling method and the heat treatment are performed together with the non-solvent swelling method or the heat treatment alone, high light absorption is provided. This is the effect of an increase in the conjugation length.
- Figure 4 is a graph showing the X-ray diffraction (X-ray Diffraction) of Example 1 and Comparative Examples 1 to 3. As shown in FIG. 4, when the heat treatment is performed together with the non-solvent swelling method, it can be seen that the morphology and crystallinity of the photoactive layer are improved.
- FIG. 5 is a graph showing absorption spectra of FT-IR of Comparative Examples 1 to 3.
- FIG. 5 it can be seen that the conjugation length becomes longer when a non-solvent swelling method or heat treatment is performed.
- FIG. 6 is a graph showing Auger electron spectroscopy of Example 1 and Comparative Examples 1 to 3.
- FIG. 6 when the heat treatment is performed together with the non-solvent swelling method, the penetration distance of the electrode into the photoactive layer can be seen to increase. In this case, the interface area between the photoactive layer and the electrode becomes wider, and the efficiency of the organic solar cell increases.
- Example 7 is a view observed with an atomic force microscope (AFM) of Example 1 and Comparative Examples 1 to 3. As shown in FIG. 7, when the non-solvent swelling method and the heat treatment are performed together, the root mean squre (RMS) value of the surface of the photoactive layer is increased. When the effective value of the surface of the photoactive layer is increased, the contact area between the photoactive layer and the electrode is increased and the electron collection efficiency is increased.
- AFM atomic force microscope
- the alkyl group may be linear or branched chain, carbon number is not particularly limited, but is preferably 1 to 20. Specific examples include, but are not limited to, methyl, ethyl, propyl, isopropyl, butyl, t-butyl, pentyl, hexyl and heptyl groups.
- the alkenyl group may be linear or branched chain, the carbon number is not particularly limited, but is preferably 2 to 40. Specific examples include, but are not limited to, alkenyl groups in which aryl groups such as stylbenyl and styrenyl groups are substituted.
- the alkoxy group may be linear, branched or cyclic. Although carbon number of an alkoxy group is not specifically limited, It is preferable that it is C1-C25. Specifically, it may be a methoxy group, ethoxy group, n-propyloxy group, iso-propyloxy group, n-butyloxy group, cyclopentyloxy group and the like, but is not limited thereto.
- the cycloalkyl group is not particularly limited, but preferably has 3 to 60 carbon atoms, and particularly preferably a cyclopentyl group and a cyclohexyl group.
- the halogen group may be fluorine, chlorine, bromine or iodine.
- the aryl group may be monocyclic, and the carbon number is not particularly limited, but is preferably 6 to 60 carbon atoms.
- Specific examples of the aryl group include monocyclic aromatic and naphthyl groups such as phenyl group, biphenyl group, triphenyl group, terphenyl group, stilbene group, anthracenyl group, phenanthrenyl group, pyrenyl group, perrylenyl group, tetrasenyl group, chrysenyl Polycyclic aromatics, such as a group, a fluorenyl group, an acenaphthasenyl group, a triphenylene group, and a fluoranthene group, etc. are mentioned, but it is not limited to these.
- the heterocyclic group is a heterocyclic group containing O, N or S as a hetero atom, and the carbon number is not particularly limited, but is preferably 2 to 60 carbon atoms.
- the heterocyclic group include thiophene group, furan group, pyrrole group, imidazole group, thiazole group, oxazole group, oxadiazole group, triazole group, pyridyl group, bipyridyl group, triazine group, acridil group, pyridazine group , Quinolinyl group, isoquinoline group, indole group, carbazole group, benzoxazole group, benzimidazole group, benzthiazole group, benzcarbazole group, benzthiophene group, dibenzothiophene group, benzfuranyl group, phenanthrroline group (phenanthroline) and dibenzofuranyl group, but are not limited thereto.
- carbon number of an imide group is not specifically limited, It is preferable that it is C1-C25. Specifically, it may be a compound having a structure as follows, but is not limited thereto.
- the amide group may be substituted with one or two of the nitrogen of the amide group is hydrogen, a linear, branched or cyclic alkyl group having 1 to 25 carbon atoms or an aryl group having 6 to 25 carbon atoms. Specifically, it may be a compound of the following structural formula, but is not limited thereto.
- the oxygen of the ester group may be substituted with a linear, branched or cyclic alkyl group having 1 to 25 carbon atoms or an aryl group having 6 to 25 carbon atoms. Specifically, it may be a compound of the following structural formula, but is not limited thereto.
- heteroaryl group may be selected from the examples of the hetero ring group described above.
- the fluorenyl group is a structure in which two ring organic compounds are connected through one atom, for example Etc.
- the fluorenyl group includes a structure of an open fluorenyl group, wherein the open fluorenyl group is a structure in which one ring compound is disconnected in a structure in which two ring compounds are connected through one atom, For example Etc.
- the amine group is not particularly limited, but is preferably 1 to 30.
- Specific examples of the amine group include methylamine group, dimethylamine group, ethylamine group, diethylamine group, phenylamine group, naphthylamine group, biphenylamine group, anthracenylamine group, and 9-methyl-anthracenylamine group.
- examples of the aryl amine group include a substituted or unsubstituted monocyclic diarylamine group, a substituted or unsubstituted polycyclic diarylamine group or a substituted or unsubstituted monocyclic and polycyclic diaryl. It means an amine group.
- the aryl group in the aryloxy group, arylthioxy group, aryl sulfoxy group and aralkylamine group is the same as the aryl group described above.
- the alkyl group in the alkylthioxy group, the alkyl sulfoxy group, the alkylamine group and the aralkylamine group is the same as the example of the alkyl group described above.
- heteroaryl group in the heteroarylamine group may be selected from the examples of the heterocyclic group described above.
- an arylene group, an alkenylene group, a fluorenylene group, a carbazolylene group, and a heteroylene group is a divalent group of an aryl group, an alkenyl group, a fluorenyl group, and a carbazole group, respectively.
- the description of the aryl group, alkenyl group, fluorenyl group, carbazole group described above can be applied except that they are each divalent group.
- substituted or unsubstituted herein is deuterium; Halogen group; An alkyl group; Alkenyl groups; An alkoxy group; Cycloalkyl group; Silyl groups; Aryl alkenyl group; Aryl group; Aryloxy group; Alkyl thioxy group; Alkyl sulfoxy groups; Aryl sulfoxy group; Boron group; Alkylamine group; Aralkyl amine groups; Arylamine group; Heteroaryl group; Carbazole groups; Arylamine group; Aryl group; Fluorenyl group; Nitrile group; Nitro group; It means that it is substituted with one or more substituents selected from the group consisting of a hydroxy group and a heterocyclic group containing one or more of N, O, S atoms or do not have any substituents.
- the thickness of the photoactive layer is 50 to 300 nm. In another exemplary embodiment, the thickness of the photoactive layer is 100 to 250 nm. In another exemplary embodiment, the thickness of the photoactive layer is 150 nm to 230 nm.
- the fill factor value may be increased due to the short charge movement distance, but there is a problem in that the light absorption rate is lowered.
- the photoactive layer exceeds 300 nm, the current density increases due to the thickness of the sufficient photo active layer. There is a problem of having a low fill factor value due to the far travel distance of the generated carrier.
- the resistance between the interfaces such as the electrode and the resistance in the bulk do not become too large to increase the value of the fill factor, the current characteristics are excellent, and due to the thickness of the sufficient optical activity, There is an advantage that separation and travel length of carriers are sufficient.
- the intrinsic value of the electron acceptor and electron donor refers to light including an electron acceptor and an electron sharing material that have not been subjected to any treatment, for example, without a heat treatment and / or a non-solvent swelling method.
- the ratio of antisymmetric and symmetric values of the FT-IR, i.e., I c c / I cc , means an increase in the conjugation length.
- the ratio of the antisymmetric value and the symmetric value of the absorption spectrum of the FT-IR increases by 110 to 150%. In another embodiment, the ratio of antisymmetric and symmetric values of the absorption spectrum of the FT-IR increases by 120 to 140%.
- the ratio of the antisymmetric value and the symmetric value of the absorption spectrum of the FT-IR is within the above range, the morphology of the organic solar cell is improved and the crystallinity is increased.
- the efficiency of the organic solar cell is increased.
- the electron accepting material and the electron donating material of the photoactive layer are swollen with a non-solvent.
- the electron acceptor and electron donor are heat treated before, simultaneously or after being swollen with a nonsolvent.
- the description of the electron accepting material, the electron donor, and the photoactive layer of the rising organic solar cell are the same as described above.
- the present invention provides an organic solar cell which is swelled to 110% and has a 110-200% increase in efficiency when the efficiency of the organic solar cell includes an electron accepting material and an electron donor before swelling with a non-solvent.
- the electron acceptor and electron donor are heat treated before, simultaneously or after being swollen with a nonsolvent.
- the efficiency of the organic solar cell is increased by 110 to 200% compared with the case containing the electron accepting material and the electron donor before swelling into a non-solvent, the electron accepting material, electron donor, photoactive layer, non-solvent of the organic solar cell And the description of the heat treatment is the same as described above.
- the electron acceptor and the electron donor provide a photoactive layer that is swelled with a non-solvent.
- the electron acceptor and electron donor are heat treated before, simultaneously or after being swollen with a nonsolvent.
- the electron acceptor and electron donor in the photoactive layer swell with a nonsolvent.
- the electron accepting material and the electron donating material of the photoactive layer are heat-treated before, simultaneously or after being swelled with a non-solvent.
- the description of the electron accepting material, the electron donor material, the non-solvent and the heat treatment of the photoactive layer is the same as described above.
- the maximum absorption wavelength of the photoactive layer is 500 to 600 nm.
- the organic solar cell includes a first electrode, a photoactive layer, and a second electrode.
- the organic solar cell may further include a substrate, a hole transport layer, and / or an electron transport layer.
- a buffer layer may be further introduced between the photoactive layer and the first electrode.
- an electron transport layer, a hole blocking layer or an optical space layer is further introduced between the photoactive layer and the second electrode.
- the first electrode may be an anode electrode or a cathode electrode.
- the second electrode may be a cathode electrode and may be an anode electrode.
- the organic solar cell may be arranged in the order of the anode electrode, the photoactive layer and the cathode electrode, and may be arranged in the order of the cathode electrode, the photoactive layer and the anode electrode, but is not limited thereto.
- the organic solar cell may be arranged in order of an anode electrode, a hole transport layer, a photoactive layer, an electron transport layer, and a cathode electrode, and in order of a cathode electrode, an electron transport layer, a photoactive layer, a hole transport layer, and an anode electrode. It may be arranged, but is not limited thereto.
- the organic solar cell may be arranged in order of an anode electrode, a buffer layer, a photoactive layer, and a cathode electrode.
- the buffer layer serves to reduce the energy bandgap difference between interfaces, thereby increasing the efficiency of the organic solar cell.
- the buffer layer is selected from the group consisting of PEDOT: PSS, molybdenum oxide (MoO 3 ), tungsten oxide (WO 3 ), and zinc oxide (ZnO).
- the buffer layer has a thickness of 1 to 60 nm. In another exemplary embodiment, the buffer layer has a thickness of 10 to 50 nm. In another exemplary embodiment, the buffer layer has a thickness of 30 to 45 nm.
- the buffer layer within the above range has the advantage of improving the light transmittance, lower the series resistance of the solar cell, and improve the interfacial properties of the other layer to produce a highly efficient solar cell.
- the substrate may be a glass substrate or a transparent plastic substrate having excellent transparency, surface smoothness, ease of handling, and waterproofness, but is not limited thereto, and the substrate may be any substrate commonly used in organic solar cells. Specifically, there are glass or polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polypropylene (PP), polyimide (PI), and triacetyl cellulose (TAC). It is not limited to this.
- PET polyethylene terephthalate
- PEN polyethylene naphthalate
- PP polypropylene
- PI polyimide
- TAC triacetyl cellulose
- the first electrode may be a transparent and excellent conductive material, but is not limited thereto.
- Metals such as vanadium, chromium, copper, zinc and gold or alloys thereof;
- Metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), indium zinc oxide (IZO); ZnO: Al or SNO 2 : combination of a metal and an oxide such as Sb;
- Conductive polymers such as poly (3-methylthiophene), poly [3,4- (ethylene-1,2-dioxy) thiophene] (PEDOT), polypyrrole and polyaniline, and the like, but are not limited thereto.
- the second electrode may be a metal having a small work function, but is not limited thereto.
- metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin and lead or alloys thereof; LiF / Al, LiO 2 / Al, LiF / Fe, Al: Li, Al: BaF 2 , Al: BaF 2 It may be a material of a multi-layer structure such as, but is not limited thereto.
- the hole transport layer and / or the electron transport layer material may be a material that increases the probability that the generated charge is transferred to the electrode by efficiently transferring electrons and holes to the photoactive layer, but is not particularly limited.
- the hole transport layer material was PEDOT: PSS (Poly (3,4-ethylenediocythiophene) doped with poly (styrenesulfonic acid)), N, N'-bis (3-methylphenyl) -N, N'-diphenyl- [1,1 '-Biphenyl] -4,4'-diamine (TPD).
- PSS Poly (3,4-ethylenediocythiophene) doped with poly (styrenesulfonic acid)
- the electron transport layer material is aluminum trihydroxyquinoline (Alq 3 ), 1,3,4-oxadiazole derivative PBD (2- (4-bipheyl) -5-phenyl-1,3,4-oxadiazole), Quinoxaline derivatives TPQ (1,3,4-tris [(3-phenyl-6-trifluoromethyl) qunoxaline-2-yl] benzene) and triazole derivatives.
- the electron transporting material a material capable of injecting electrons well from the cathode and transferring the electrons to the photoactive layer is suitable.
- Specific examples thereof include Al complexes of 8-hydroxyquinoline; Complexes including Alq 3 ; Organic radical compounds; Hydroxyflavone-metal complexes and the like, but are not limited thereto.
- the hole injection material is a material capable of well injecting holes from the anode at a low voltage, and the highest occupied molecular orbital (HOMO) of the hole injection material is preferably between the work function of the anode material and the HOMO of the surrounding organic material layer.
- the hole injection material include metal porphyrin, oligothiophene, arylamine-based organic material, hexanitrile hexaazatriphenylene-based organic material, quinacridone-based organic material, and perylene-based Organic materials, anthraquinone, and polyaniline and polythiophene-based conductive polymers, but are not limited thereto.
- the organic solar cell of the present specification may be manufactured by materials and methods known in the art, except that the photoactive layer is swelled with a non-solvent, or a swelling treatment and a heat treatment are performed with the non-solvent.
- It provides a method of manufacturing an organic solar cell comprising the step of forming a second electrode on the organic material layer.
- the organic solar cell of the present specification can be produced, for example, by sequentially stacking a first electrode, an organic material layer including a photoactive layer, and a second electrode on a substrate. At this time, it may be coated by a wet method such as gravure printing, offset printing, screen printing, inkjet, spin coating, spray coating, but is not limited to these methods.
- the photoactive layer includes an electron acceptor and an electron donor.
- the photoactive layer is formed from a mixed solution of poly (3-hexylthiophene) (P3HT) and [6,6] -phenyl C-butyric acid methyl ester (PCBM).
- P3HT poly (3-hexylthiophene)
- PCBM [6,6] -phenyl C-butyric acid methyl ester
- the method may further include forming an organic layer after the heat treatment and before the forming of the second electrode.
- the organic material layer includes a hole transport layer, a hole injection layer, an electron transport layer, an electron injection layer, a buffer layer, but is not limited thereto.
- the method may further include forming an organic material layer after forming the first electrode and before forming the photoactive layer.
- the method may further include forming a buffer layer after forming the first electrode and before forming the photoactive layer.
- the surface treatment of the photoactive layer with a non-solvent is spin coating or drop coating.
- the organic solar cell had a structure of ITO / PEDOT: PSS / photoactive layer (P3HT: PCBM) / Al.
- ITO-coated glass substrates were ultrasonically cleaned with distilled water, acetone and 2-propanol, ozonated the ITO surface for 10 minutes, and spin-coated PEDOT: PSS (Clavios P) to a thickness of 40 nm at Heat treated for minutes.
- PEDOT PSS (Clavios P)
- a mixture of P3HT: PCBM in a ratio of 1: 0.6 was formed and spin-coated to a thickness of 220 nm to form a photoactive layer.
- Example 1 Unlike Example 1, the same procedure as in Example 1 was conducted except that the nonsolvent swelling method and the heat treatment were not applied.
- Example 1 Unlike Example 1, except that heat treatment was not applied, the same process as in Example 1 was performed.
- Example 1 Unlike Example 1, the same procedure as in Example 1 was conducted except that the nonsolvent swelling method was not applied.
- 2 is a graph showing an organic solar cell current-voltage curve.
- Example 1 to which both the non-solvent swelling method and the heat treatment are applied does not apply both the non-solvent swelling method and the heat treatment, or the efficiency is improved compared to Comparative Examples 1 to 4 to which only one of the two methods is applied. It can be seen.
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Abstract
Description
Claims (52)
- 제1 전극;상기 제1 전극과 대향하는 제2 전극; 및상기 제1 전극과 제2 전극 사이에 구비되고, 광 활성층을 포함하는 유기물층을 포함하고,상기 광 활성층은 전자 수용물질 및 전자 공여물질을 포함하고,상기 전자 수용물질 및 전자 공여물질은 비용매로 팽윤된 것인 유기 태양 전지.
- 청구항 1에 있어서,상기 전자 수용물질 및 전자 공여물질은 비용매로 팽윤되기 전, 동시 또는 이후에 열처리 된 것인 유기 태양 전지.
- 청구항 1에 있어서,상기 비용매는 광 활성층 상에 1분 내지 60분 동안 도포시, 광 활성층 내부로의 비용매의 침투거리가 광 활성층 두께의 5% 이상 50% 미만인 것인 유기 태양 전지.
- 청구항 1에 있어서,상기 비용매는 물, 알칸계, 할로하이드로카본계, 에테르계, 케톤계, 에스테르계, 질소 화합물, 황 화합물, 산, 알코올계, 페놀계 및 폴리올계로 이루어진 군에서 1 또는 2 이상이 선택되는 것인 유기 태양 전지.
- 청구항 4에 있어서,상기 알칸계 비용매는 n-부탄, n-펜탄, n-헥산, n-옥탄, 이소옥탄, n-도데칸, 디클로로메탄, 시클로헥산 및 메틸시클로 헥산으로 이루어진 군에서 1 또는 1이상이 선택되는 것인 유기 태양 전지.
- 청구항 4에 있어서,상기 할로하이드로카본계 비용매는 클로로 메탄, 디클로로메탄, 메틸렌클로라이드, 1,1-디클로로에틸렌, 에틸렌디클로라이드, 크롤로포름, 1,1-디클로로에탄, 트리클로로에틸렌, 카본 테트라클로라이드, 클로로벤젠, o-디클로로벤젠 및 1,1,2-트리클로로트리플루오란텐으로 이루어진 군에서 1 또는 2 이상이 선택되는 것인 유기 태양 전지.
- 청구항 4에 있어서,상기 에테르계 비용매는 테트라하이드로퓨란, 1,4-디옥산, 디에틸에테르 및 디벤질에테르으로 이루어진 군에서 1 또는 2 이상이 선택되는 것인 유기 태양 전지.
- 청구항 4에 있어서,상기 케톤계 비용매는 아세톤, 메틸에틸케톤, 시클로헥사논, 디에틸케톤, 아세토페논, 메틸이소부틸케톤, 메틸이소아밀케톤, 이소포론 및 디-(이소부틸)케톤으로 이루어진 군에서 1 또는 2 이상이 선택되는 것인 유기 태양 전지.
- 청구항 4에 있어서,상기 에스테르계 비용매는 에틸렌 카보네이트, 메틸 아세테이트, 에틸포메이트, 프로필렌-1,2-카보네이트, 에틸 아세테이트, 디에틸카보네이트, 디에틸설페이트, n-부틸아세테이트, 이소부틸 아세테이트, 2-에톡시에틸 아세테이트, 이소아밀아세테이트 및 이소부틸이소부틸에이트로 이루어진 군에서 1 또는 2 이상이 선택되는 것인 유기 태양 전지.
- 청구항 4에 있어서,상기 질소 화합물 비용매는 아세토니트릴, 프로피오니트릴, 니트로메탄, 니트로에탄, 2-니트로프로판, 니트로벤젠, 에타놀아민, 에틸렌 디엠 미(ethylene diem me), 피리딘, 모폴린, 아날린, N-메틸-2-피롤리돈, 시클로헥실아민, 퀴놀린, 포름아미드 및 N,N-디메틸포름아미드로 이루어진 군에서 1 또는 2 이상이 선택되는 것인 유기 태양 전지.
- 청구항 4에 있어서,상기 황 화합물 비용매는 카본 디설파이드, 디메틸설폭사이드 및 에탄티올로 이루어진 군에서 1 또는 2 이상이 선택되는 것인 유기 태양 전지.
- 청구항 4에 있어서,상기 알코올계 비용매는 메탄올, 에탄올, 알릴 알코올, 1-프로판올, 2-프로판올, 1- 부탄올, 2-부탄올, 이소부탄올, 벤질알콜, 시클로헥산올, 디아세톤알코올, 에틸렌 글리콜 모노에틸 에테르, 디에틸렌 글리콜 모노에틸 에테르, 디에틸렌 글리콜 모노에틸 에테르, 에틸렌 글리콜 모노부틸 에테르, 디에틸렌 글리콜 모노부틸 에테르 및 1-데칸올로 이루어진 군에서 1 또는 2 이상이 선택되는 것인 유기 태양 전지.
- 청구항 4에 있어서,상기 산 비용매는 포름산, 아세트산, 벤젠 산, 올레산, 스테아린산으로 이루어진 군에서 1 또는 2 이상이 선택되는 것인 유기 태양 전지.
- 청구항 4에 있어서,상기 페놀계 비용매는 페놀, 레솔시놀, m-크레졸 및 메틸살리실레이트로 이루어진 군에서 1 또는 2 이상이 선택되는 것인 유기 태양 전지.
- 청구항 4에 있어서,상기 폴리올계 비용매는 에틸렌 글리콜, 글리세롤, 프로필렌 글리콜, 디에틸렌 글리콜, 트리에틸렌글리콜 및 디프로필렌글리콜로 이루어진 군에서 1 또는 2 이상이 선택되는 것인 유기 태양 전지.
- 청구항 1에 있어서,상기 전자 수용물질은 플러렌 유도체 또는 비플러렌 유도체인 것인 유기 태양 전지.
- 청구항 16에 있어서,상기 플러렌 유도체는 C60 플러렌 유도체 또는 C70 플러렌 유도체인 유기 태양 전지.
- 청구항 16에 있어서,상기 플러렌 유도체는 C76 플러렌 유도체, C78 플러렌 유도체, C84 플러렌 유도체 및 C90 플러렌 유도체로 이루어진 군에서 선택되는 것인 유기 태양 전지.
- 청구항 16에 있어서,상기 비플러렌 유도체는 LUMO 에너지 준위가 -2.0 내지 -6.0 eV 인 것인 유기 태양 전지.
- 청구항 1에 있어서,상기 전자 공여물질은 적어도 한 종의 전자 공여체; 또는 적어도 한 종의 전자 수용체와 적어도 한 종의 전자 공여체의 중합체를 포함하는 유기 태양 전지.
- 청구항 20에 있어서,상기 전자 공여체는 하기 화학식으로 이루어지는 군에서 1 또는 2 이상을 포함하는 유기 태양 전지:상기 화학식에 있어서,a는 0 내지 4의 정수이고,b는 0 내지 6의 정수이며,c는 0 내지 8의 정수이고,d 및 e는 각각 0 내지 3의 정수이며,R2 및 R3는 서로 동일하거나 상이하고, 각각 독립적으로 수소; 중수소; 할로겐기; 니트릴기; 니트로기; 이미드기; 아미드기; 히드록시기; 치환 또는 비치환된 알킬기; 치환 또는 비치환된 시클로알킬기; 치환 또는 비치환된 알콕시기; 치환 또는 비치환된 아릴옥시기; 치환 또는 비치환된 알킬티옥시기; 치환 또는 비치환된 아릴티옥시기; 치환 또는 비치환된 알킬술폭시기; 치환 또는 비치환된 아릴술폭시기; 치환 또는 비치환된 알케닐기; 치환 또는 비치환된 실릴기; 치환 또는 비치환된 붕소기; 치환 또는 비치환된 알킬아민기; 치환 또는 비치환된 아랄킬아민기; 치환 또는 비치환된 아릴아민기; 치환 또는 비치환된 헤테로아릴아민기; 치환 또는 비치환된 아릴기; 치환 또는 비치환된 플루오레닐기; 치환 또는 비치환된 카바졸기; 및 N, O, S 원자 중 1개 이상을 포함하는 치환 또는 비치환된 헤테로고리기로 이루어진 군으로부터 선택되거나, 인접한 2개의 치환기는 축합고리를 형성할 수 있고,X1 내지 X3는 서로 동일하거나 상이하고, 각각 독립적으로, CRR', NR, O, SiRR', PR, S, GeRR', Se 및 Te로 이루어진 군에서 선택되며, Y1 및 Y2는 서로 동일하거나 상이하고, 각각 독립적으로 CR, N, SiR, P 및 GeR로 이루어진 군에서 선택되며,상기 R 및 R'는 서로 동일하거나 상이하고, 각각 독립적으로 수소; 중수소; 할로겐기; 니트릴기; 니트로기; 이미드기; 아미드기; 히드록시기; 치환 또는 비치환된 알킬기; 치환 또는 비치환된 시클로알킬기; 치환 또는 비치환된 알콕시기; 치환 또는 비치환된 아릴옥시기; 치환 또는 비치환된 알킬티옥시기; 치환 또는 비치환된 아릴티옥시기; 치환 또는 비치환된 알킬술폭시기; 치환 또는 비치환된 아릴술폭시기; 치환 또는 비치환된 알케닐기; 치환 또는 비치환된 실릴기; 치환 또는 비치환된 붕소기; 치환 또는 비치환된 알킬아민기; 치환 또는 비치환된 아랄킬아민기; 치환 또는 비치환된 아릴아민기; 치환 또는 비치환된 헤테로아릴아민기; 치환 또는 비치환된 아릴기; 치환 또는 비치환된 플루오레닐기; 치환 또는 비치환된 카바졸기; 및 N, O, S 원자 중 1개 이상을 포함하는 치환 또는 비치환된 헤테로고리기로 이루어진 군으로부터 선택되거나, 인접한 2개의 치환기는 축합고리를 형성할 수 있다.
- 청구항 20에 있어서,상기 전자 수용체는 하기 화학식으로 이루어진 군에서 1 또는 2 이상을 포함하는 유기 태양 전지:상기 화학식에 있어서,R2 내지 R5는 서로 동일하거나 상이하고, 각각 독립적으로 수소; 중수소; 할로겐기; 니트릴기; 니트로기; 이미드기; 아미드기; 히드록시기; 치환 또는 비치환된 알킬기; 치환 또는 비치환된 시클로알킬기; 치환 또는 비치환된 알콕시기; 치환 또는 비치환된 아릴옥시기; 치환 또는 비치환된 알킬티옥시기; 치환 또는 비치환된 아릴티옥시기; 치환 또는 비치환된 알킬술폭시기; 치환 또는 비치환된 아릴술폭시기; 치환 또는 비치환된 알케닐기; 치환 또는 비치환된 실릴기; 치환 또는 비치환된 붕소기; 치환 또는 비치환된 알킬아민기; 치환 또는 비치환된 아랄킬아민기; 치환 또는 비치환된 아릴아민기; 치환 또는 비치환된 헤테로아릴아민기; 치환 또는 비치환된 아릴기; 치환 또는 비치환된 플루오레닐기; 치환 또는 비치환된 카바졸기; 및 N, O, S 원자 중 1개 이상을 포함하는 치환 또는 비치환된 헤테로고리기로 이루어진 군으로부터 선택되거나, 인접한 2개의 치환기는 축합고리를 형성할 수 있고,X1 및 X2는 서로 동일하거나 상이하고, 각각 독립적으로, CRR', NR, O, SiRR', PR, S, GeRR', Se 및 Te로 이루어진 군에서 선택되며, Y1 내지 Y4는 서로 동일하거나 상이하고, 각각 독립적으로 CR, N, SiR, P 및 GeR로 이루어진 군에서 선택되며,R 및 R'는 서로 동일하거나 상이하고, 각각 독립적으로 수소; 중수소; 할로겐기; 니트릴기; 니트로기; 이미드기; 아미드기; 히드록시기; 치환 또는 비치환된 알킬기; 치환 또는 비치환된 시클로알킬기; 치환 또는 비치환된 알콕시기; 치환 또는 비치환된 아릴옥시기; 치환 또는 비치환된 알킬티옥시기; 치환 또는 비치환된 아릴티옥시기; 치환 또는 비치환된 알킬술폭시기; 치환 또는 비치환된 아릴술폭시기; 치환 또는 비치환된 알케닐기; 치환 또는 비치환된 실릴기; 치환 또는 비치환된 붕소기; 치환 또는 비치환된 알킬아민기; 치환 또는 비치환된 아랄킬아민기; 치환 또는 비치환된 아릴아민기; 치환 또는 비치환된 헤테로아릴아민기; 치환 또는 비치환된 아릴기; 치환 또는 비치환된 플루오레닐기; 치환 또는 비치환된 카바졸기; 및 N, O, S 원자 중 1개 이상을 포함하는 치환 또는 비치환된 헤테로고리기로 이루어진 군으로부터 선택되거나, 인접한 2개의 치환기는 축합고리를 형성할 수 있다.
- 청구항 1에 있어서,상기 비용매는 질소 화합물 비용매인 것인 유기 태양 전지.
- 청구항 1에 있어서,상기 비용매는 아세토니트릴인 것인 유기 태양 전지.
- 청구항 1에 있어서,상기 비용매는 알칸계, 에테르계, 알코올계 및 산으로 이루어진 군에서 1 또는 2이상이 선택되는 것인 유기 태양 전지.
- 청구항 2에 있어서,상기 열처리의 온도는 상기 공여 물질의 유리 전이 온도(Tg) 이상 열분해 온도 이하인 것인 유기 태양 전지.
- 청구항 1에 있어서,상기 전자 수용물질은 [6,6]-페닐 C-부티릭산 메틸 에스테르(PCBM)이고, 상기 전자 공여물질은 폴리(3-헥실티오펜)(P3HT)인 것인 유기 태양 전지.
- 청구항 1에 있어서,상기 비용매는 아세토니트릴이고,상기 전자 수용물질은 [6,6]-페닐 C-부티릭산 메틸 에스테르(PCBM)이고, 상기 전자 공여물질은 폴리(3-헥실티오펜)(P3HT)인 것인 유기 태양 전지.
- 청구항 1에 있어서,상기 비용매는 아세토니트릴이고,상기 전자 수용물질은 [6,6]-페닐 C-부티릭산 메틸 에스테르(PCBM)이고, 상기 전자 공여물질은 폴리(3-헥실티오펜)(P3HT)이며,상기 열처리 온도는 상기 공여 물질의 유리 전이 온도(Tg) 이상 열분해 온도 이하인 것인 유기 태양 전지.
- 청구항 1 내지 29 중 어느 한 항에 있어서,상기 유기 태양 전지는 FT-IR의 흡수 스펙트럼의 반대칭(antisymmetric) 값과 대칭(symmetric)값의 비율(Ic=c/Ic-c)이 상기 전자 수용물질 및 전자 공여물질의 고유의 값에 비하여 110 내지 150% 상승한 것인 유기 태양 전지.
- 청구항 1 내지 29 중 어느 한 항에 있어서,상기 유기 태양 전지의 효율은 비용매로 팽윤되기 전의 전자 수용물질 및 전자 공여물질을 포함하는 경우에 비하여 110 내지 200%상승한 것인 유기 태양 전지.
- 청구항 1 내지 29 중 어느 한 항에 있어서,상기 전자 수용물질과 전자 공여물질의 비는 1:10 내지 10:1인 것인 유기 태양 전지.
- 청구항 1 내지 29 중 어느 한 항에 있어서,상기 광 활성층의 두께는 50 내지 300nm 인 유기 태양 전지.
- 청구항 1 내지 29 중 어느 한 항에 있어서,상기 유기물층은 버퍼층을 포함하는 유기 태양 전지.
- 청구항 34에 있어서,상기 버퍼층의 두께는 1nm 내지 60nm인 유기 태양 전지.
- 제1 전극;상기 제1 전극과 대향하는 제2 전극; 및상기 제1 전극과 제2 전극 사이에 구비되고, 광 활성층을 포함하는 유기물층을 포함하고,상기 광 활성층은 전자 수용물질 및 전자 공여물질을 포함하고,FT-IR의 흡수 스펙트럼의 반대칭(antisymmetric) 값과 대칭(symmetric)값의 비율(Ic=c/Ic-c)이 상기 전자 수용물질 및 전자 공여물질의 고유의 값에 비하여 110 내지 150% 상승한 것인 유기 태양 전지.
- 청구항 36에 있어서,상기 전자 수용물질 및 전자 공여물질은 비용매로 팽윤되는 것인 유기 태양 전지.
- 청구항 37에 있어서,상기 전자 수용물질 및 전자 공여물질은 비용매로 팽윤되기 전, 동시 또는 이후에 열처리 된 것인 유기 태양 전지.
- 제1 전극;상기 제1 전극과 대향하는 제2 전극; 및상기 제1 전극과 제2 전극 사이에 구비되고, 광 활성층을 포함하는 유기물층을 포함하고,상기 광 활성층은 전자 수용물질 및 전자 공여물질을 포함하며,상기 전자 수용물질 및 전자 공여물질은 비용매로 팽윤되고,상기 유기 태양 전지의 효율이 비용매로 팽윤되기 전의 전자 수용물질 및 전자 공여물질을 포함하는 경우에 비하여 110 내지 200%상승한 것인 유기 태양 전지.
- 청구항 39에 있어서,상기 전자 수용물질 및 전자 공여물질은 비용매로 팽윤되기 전, 동시 또는 이후에 열처리 된 것인 유기 태양 전지.
- 전자 수용물질 및 전자 공여물질을 포함하는 광 활성층에 있어서,상기 전자 수용물질 및 전자 공여물질은 비용매로 팽윤된 것인 광 활성층.
- 청구항 41에 있어서,상기 비용매는 물, 알칸계, 할로하이드로카본계, 에테르계, 케톤계, 에스테르계, 질소 화합물, 황 화합물, 산, 알코올계, 페놀계 및 폴리올계로 이루어진 군에서 1 또는 2 이상이 선택되는 것인 광 활성층.
- 청구항 41 또는 42에 있어서,상기 광 활성층은 FT-IR의 흡수 스펙트럼의 반대칭(antisymmetric) 값과 대칭(symmetric)값의 비율(Ic=c/Ic-c)이 상기 전자 수용물질 및 전자 공여물질의 고유의 값에 비하여 110 내지 150% 상승한 것 인 광 활성층.
- 전자 수용물질 및 전자 공여물질을 포함하는 광 활성층에 있어서,FT-IR의 흡수 스펙트럼의 반대칭(antisymmetric) 값과 대칭(symmetric)값의 비율(Ic=c/Ic-c)이 상기 전자 수용물질 및 전자 공여물질의 고유의 값에 비하여 110 내지 150% 상승한 것 인 광 활성층.
- 청구항 44에 있어서,상기 전자 수용물질 및 전자 공여물질은 비용매로 팽윤된 것인 광 활성층.
- 청구항 41, 42, 44 및 45 중 어느 한 항에 있어서,상기 전자 수용물질 및 전자 공여물질은 비용매로 팽윤되기 전, 동시 또는 이후에 열처리 된 것인 광 활성층.
- 기판을 준비하는 단계;상기 기판의 일 영역에 제1 전극을 형성하는 단계;상기 제1 전극 상부에 광 활성층을 포함하는 유기물층을 형성하는 단계;상기 광 활성층을 비용매로 표면처리를 하는 단계; 및상기 유기물층에 제2 전극을 형성하는 단계를 포함하는 청구항 1 내지 29 및 36 내지 42 중 어느 하나의 항에 따른 유기 태양 전지의 제조방법.
- 청구항 47에 있어서,상기 비용매로 표면 처리를 하는 단계 전, 동시 또는 이후에 열처리를 하는 단계를 더 포함하는 유기 태양 전지의 제조 방법.
- 청구항 47에 있어서,상기 제1 전극을 형성하는 단계 후,상기 광 활성층을 형성하는 단계 전에 유기물층을 형성하는 단계를 더 포함하는 유기 태양 전지의 제조 방법.
- 청구항 47에 있어서,상기 제1 전극을 형성하는 단계 후,상기 광 활성층을 형성하는 단계 전에 버퍼층을 형성하는 단계를 더 포함하는 유기 태양 전지의 제조 방법.
- 청구항 48에 있어서,상기 열처리 하는 단계의 온도는 상기 공여 물질의 유리 전이 온도(Tg) 이상 열분해 온도 이하인 것인 유기 태양 전지의 제조 방법.
- 청구항 47에 있어서,상기 광 활성층의 두께는 50 내지 300nm 인 유기 태양 전지의 제조 방법.
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CN201380050453.9A CN104718635B (zh) | 2012-09-28 | 2013-09-27 | 光活化层、包含光活化层的有机太阳能电池及其制造方法 |
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