WO2016076213A1 - インク組成物およびそれを用いて製造した光電変換素子 - Google Patents
インク組成物およびそれを用いて製造した光電変換素子 Download PDFInfo
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- WO2016076213A1 WO2016076213A1 PCT/JP2015/081270 JP2015081270W WO2016076213A1 WO 2016076213 A1 WO2016076213 A1 WO 2016076213A1 JP 2015081270 W JP2015081270 W JP 2015081270W WO 2016076213 A1 WO2016076213 A1 WO 2016076213A1
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- 125000006608 n-octyloxy group Chemical group 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 150000002791 naphthoquinones Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 0.000 description 1
- 125000005447 octyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical compound C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 description 1
- 150000004866 oxadiazoles Chemical class 0.000 description 1
- 125000001820 oxy group Chemical group [*:1]O[*:2] 0.000 description 1
- 125000005740 oxycarbonyl group Chemical group [*:1]OC([*:2])=O 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 229960003540 oxyquinoline Drugs 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- SLIUAWYAILUBJU-UHFFFAOYSA-N pentacene Chemical compound C1=CC=CC2=CC3=CC4=CC5=CC=CC=C5C=C4C=C3C=C21 SLIUAWYAILUBJU-UHFFFAOYSA-N 0.000 description 1
- 125000006340 pentafluoro ethyl group Chemical group FC(F)(F)C(F)(F)* 0.000 description 1
- 125000001148 pentyloxycarbonyl group Chemical group 0.000 description 1
- 125000005003 perfluorobutyl group Chemical group FC(F)(F)C(F)(F)C(F)(F)C(F)(F)* 0.000 description 1
- 125000005005 perfluorohexyl group Chemical group FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)* 0.000 description 1
- 125000001792 phenanthrenyl group Chemical class C1(=CC=CC=2C3=CC=CC=C3C=CC12)* 0.000 description 1
- 229950000688 phenothiazine Drugs 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 125000006678 phenoxycarbonyl group Chemical group 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 125000003356 phenylsulfanyl group Chemical group [*]SC1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 125000005936 piperidyl group Chemical group 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229940005642 polystyrene sulfonic acid Drugs 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- QLNJFJADRCOGBJ-UHFFFAOYSA-N propionamide Chemical group CCC(N)=O QLNJFJADRCOGBJ-UHFFFAOYSA-N 0.000 description 1
- 125000001501 propionyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004742 propyloxycarbonyl group Chemical group 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- PBMFSQRYOILNGV-UHFFFAOYSA-N pyridazine Chemical compound C1=CC=NN=C1 PBMFSQRYOILNGV-UHFFFAOYSA-N 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
- 125000005493 quinolyl group Chemical group 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon 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
- 238000004544 sputter deposition Methods 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 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
- IFLREYGFSNHWGE-UHFFFAOYSA-N tetracene Chemical compound C1=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C21 IFLREYGFSNHWGE-UHFFFAOYSA-N 0.000 description 1
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 description 1
- 125000001544 thienyl group Chemical group 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
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 125000004306 triazinyl group Chemical group 0.000 description 1
- 125000005034 trifluormethylthio group Chemical group FC(S*)(F)F 0.000 description 1
- 125000004044 trifluoroacetyl group Chemical group FC(C(=O)*)(F)F 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000001291 vacuum drying Methods 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
- 238000007740 vapor deposition Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-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
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- 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
- H10K85/215—Fullerenes, e.g. C60 comprising substituents, e.g. PCBM
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/52—Electrically conductive inks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
-
- 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
- H01L31/08—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 in which radiation controls flow of current through the device, e.g. photoresistors
- H01L31/10—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 in which radiation controls flow of current through the device, e.g. photoresistors characterised by potential barriers, e.g. phototransistors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K39/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic radiation-sensitive element covered by group H10K30/00
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
- H10K71/15—Deposition of organic active material using liquid deposition, e.g. spin coating characterised by the solvent used
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- 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
- H10K85/115—Polyfluorene; Derivatives thereof
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/151—Copolymers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/40—Organosilicon compounds, e.g. TIPS pentacene
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K10/00—Organic devices specially adapted for rectifying, amplifying, oscillating or switching; Organic capacitors or resistors having potential barriers
- H10K10/40—Organic transistors
- H10K10/46—Field-effect transistors, e.g. organic thin-film transistors [OTFT]
- H10K10/462—Insulated gate field-effect transistors [IGFETs]
- H10K10/484—Insulated gate field-effect transistors [IGFETs] characterised by the channel regions
-
- 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
- H10K30/30—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
-
- 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 ink composition and a photoelectric conversion element produced using the ink composition.
- Organic thin-film solar cells have been attracting attention in recent years because they may be inexpensively manufactured only by a coating process.
- an active layer included in the organic thin-film solar cell is formed by forming a film using an ink composition containing a constituent material of an active layer and a solvent. Yes.
- Patent Document 1 and Patent Document 2 Special table 2013-533606 gazette
- the present invention is as follows. [1] An ink composition comprising a P-type semiconductor material, an N-type semiconductor material, and two or more solvents including a first solvent and a second solvent, The total weight of the first solvent and the second solvent is 70% by weight or more with respect to 100% by weight of the total solvent contained in the ink composition; The boiling point of the first solvent is lower than the boiling point of the second solvent; The boiling point of the first solvent is 120 ° C. or more and 400 ° C.
- the first solvent polar Hansen solubility parameter P1 (MPa 0.5 ) and the second solvent polar Hansen solubility parameter P2 (MPa 0.5 ) have a relationship of 1.0 ⁇ (P2-P1) ⁇ 9.0 [1] to [3]
- An organic photoelectric conversion element having a first electrode and a second electrode, and having the thin film as an active layer between the first electrode and the second electrode.
- Polymer compound means a polymer having a molecular weight distribution and having a polystyrene-equivalent number average molecular weight of 1 ⁇ 10 3 to 1 ⁇ 10 8 .
- the structural unit contained in the polymer compound is 100 mol% in total.
- Low molecular weight compound means a compound having no molecular weight distribution and a molecular weight of 1 ⁇ 10 4 or less.
- “Structural unit” means one or more units present in a polymer compound.
- the “hydrogen atom” may be a light hydrogen atom or a deuterium atom.
- Halogen atom includes fluorine atom, chlorine atom, bromine atom and iodine atom.
- the “alkyl group” may be linear, branched or cyclic.
- the number of carbon atoms of the linear alkyl group is usually 1 to 50, preferably 3 to 30, more preferably 4 to 20, not including the carbon atoms of the substituent.
- the number of carbon atoms of the branched and cyclic alkyl group is usually 3 to 50, preferably 3 to 30, more preferably 4 to 20, not including the number of carbon atoms of the substituent.
- the alkyl group may have a substituent, and examples of the alkyl group include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, tert-butyl group, n- Pentyl group, isoamyl group, 2-ethylbutyl group, n-hexyl group, cyclohexyl group, n-heptyl group, cyclohexylmethyl group, cyclohexylethyl group, n-octyl group, 2-ethylhexyl group, 3-n-propylheptyl group, Non-adamantyl group, n-decyl group, 3,7-dimethyloctyl group, 2-ethyloctyl group, 2-n-hexyl-decyl group, n-dodecyl group, tetradecyl group,
- Substituted alkyl group trifluoromethyl group, pentafluoroethyl group, perfluorobutyl group, perfluorohexyl group, perfluorooctyl group, 3-phenylpropyl 3- (4-methylphenyl) propyl group, 3- (3,5-di -n- hexyl phenyl) propyl group, and substituted alkyl groups such as 6-ethyloxy-hexyl group.
- Aryl group means an atomic group remaining after removing one hydrogen atom directly bonded to a carbon atom constituting a ring from an aromatic hydrocarbon.
- the number of carbon atoms of the aryl group does not include the number of carbon atoms of the substituent, and is usually 6 to 60, preferably 6 to 20, and more preferably 6 to 10.
- the aryl group may have a substituent, and examples of the aryl group include a phenyl group, 1-naphthyl group, 2-naphthyl group, 1-anthracenyl group, 2-anthracenyl group, 9-anthracenyl group, 1 -Pyrenyl group, 2-pyrenyl group, 4-pyrenyl group, 2-fluorenyl group, 3-fluorenyl group, 4-fluorenyl group, 2-phenylphenyl group, 3-phenylphenyl group, 4-phenylphenyl group, and these And a group in which a hydrogen atom in the group is substituted with an alkyl group, an alkoxy group, an aryl group, a fluorine atom, or the like.
- the “alkoxy group” may be linear, branched or cyclic.
- the number of carbon atoms of the linear alkoxy group does not include the number of carbon atoms of the substituent, and is usually 1 to 40, preferably 4 to 10.
- the number of carbon atoms of the branched and cyclic alkoxy group does not include the number of carbon atoms of the substituent, and is usually 3 to 40, preferably 4 to 10.
- the alkoxy group may have a substituent.
- Examples of the alkoxy group include a methoxy group, an ethoxy group, an n-propyloxy group, an isopropyloxy group, an n-butyloxy group, an isobutyloxy group, and a tert-butyloxy group.
- N-pentyloxy group n-hexyloxy group, cyclohexyloxy group, n-heptyloxy group, n-octyloxy group, 2-ethylhexyloxy group, n-nonyloxy group, n-decyloxy group, 3,7-dimethyl
- Examples include an octyloxy group and a lauryloxy group.
- the number of carbon atoms of the “aryloxy group” is usually 6 to 60, preferably 7 to 48, not including the number of carbon atoms of the substituent.
- the aryloxy group may have a substituent, and examples of the alkyl group include phenoxy group, 1-naphthyloxy group, 2-naphthyloxy group, 1-anthracenyloxy group, 9-anthracenyl. Examples thereof include an oxy group, a 1-pyrenyloxy group, and a group in which a hydrogen atom in these groups is substituted with an alkyl group, an alkoxy group, a fluorine atom, or the like.
- alkylthio group may be linear, branched or cyclic.
- the number of carbon atoms of the linear alkoxy group does not include the number of carbon atoms of the substituent, and is usually 1 to 40, preferably 4 to 10.
- the number of carbon atoms of the branched and cyclic alkoxy group does not include the number of carbon atoms of the substituent, and is usually 3 to 40, preferably 4 to 10.
- the alkylthio group may have a substituent, and examples of the alkylthio group include methylthio group, ethylthio group, propylthio group, isopropylthio group, butylthio group, isobutylthio group, tert-butylthio group, pentylthio group, hexylthio group.
- the number of carbon atoms of the “arylthio group” does not include the number of carbon atoms of the substituent, and is usually 6 to 60, preferably 7 to 48.
- the arylthio group may have a substituent, and examples of the arylthio group include a phenylthio group and a C1-C12 alkyloxyphenylthio group (where C1-C12 has 1 to 12 carbon atoms. The same applies to C1 to C12 alkylphenylthio groups, 1-naphthylthio groups, 2-naphthylthio groups, and pentafluorophenylthio groups.
- P-valent heterocyclic group (p represents an integer of 1 or more) is a p-group of hydrogen atoms directly bonded to a carbon atom or a hetero atom constituting a ring from a heterocyclic compound. This means the remaining atomic group excluding the hydrogen atom.
- this is an atomic group obtained by removing p hydrogen atoms from an aromatic heterocyclic compound directly bonded to carbon atoms or heteroatoms constituting the ring.
- a “p-valent aromatic heterocyclic group” is preferable.
- “Aromatic heterocyclic compounds” include oxadiazole, thiadiazole, thiazole, oxazole, thiophene, pyrrole, phosphole, furan, pyridine, pyrazine, pyrimidine, triazine, pyridazine, quinoline, isoquinoline, carbazole, dibenzosilole, dibenzophosphole A compound in which the heterocycle itself is aromatic; and a heterocycle such as phenoxazine, phenothiazine, dibenzoborol, dibenzosilol, benzopyran, etc., itself does not exhibit aromaticity, but the aromatic ring is condensed to the heterocycle Means a compound that has been
- the number of carbon atoms of the monovalent heterocyclic group does not include the number of carbon atoms of the substituent and is usually 2 to 60, preferably 4 to 20.
- the monovalent heterocyclic group may have a substituent, and examples of the monovalent heterocyclic group include a thienyl group, a pyrrolyl group, a furyl group, a pyridyl group, a piperidyl group, a quinolyl group, and an isoquinolyl group.
- a thienyl group a pyrrolyl group, a furyl group, a pyridyl group, a piperidyl group, a quinolyl group, and an isoquinolyl group.
- a “substituted amino group” is an amino group having two substituents.
- an alkyl group, an aryl group, or a monovalent heterocyclic group is preferable.
- the substituted amino group usually has 2 to 30 carbon atoms.
- substituted amino group examples include, for example, a dimethylamino group, a dialkylamino group of a diethylamino group; a diphenylamino group, a bis (4-methylphenyl) amino group, a bis (4-tert-butylphenyl) amino group, a bis (3 , 5-di-tert-butylphenyl) amino group and the like.
- the “acyl group” usually has about 2 to 20 carbon atoms, preferably 2 to 18 carbon atoms. Examples thereof include acetyl group, propionyl group, butyryl group, isobutyryl group, pivaloyl group, benzoyl group, Examples include a trifluoroacetyl group and a pentafluorobenzoyl group.
- “Imine residue” means an imine compound (an organic compound having —N ⁇ C— in the molecule. Examples thereof include aldimine, ketimine, and hydrogen atoms on these N substituted with alkyl groups or the like. And a residue obtained by removing one hydrogen atom from the compound, usually having about 2 to 20 carbon atoms, preferably 2 to 18 carbon atoms. Examples of the imine residue include groups represented by the following structural formulas.
- the “substituted amide group” usually has about 2 to 20 carbon atoms, preferably 2 to 18 carbon atoms.
- Examples of the substituted amide group include a formamide group, an acetamide group, a propioamide group, a butyroamide group, a benzamide group. Trifluoroacetamide group, pentafluorobenzamide group, diformamide group, diacetamide group, dipropioamide group, dibutyroamide group, dibenzamide group, ditrifluoroacetamide group, dipentafluorobenzamide group and the like.
- Examples of the “acid imide group” include residues obtained by removing a hydrogen atom bonded to the nitrogen atom from an acid imide, having about 4 to 20 carbon atoms. And the like.
- “Substituted carboxyl group” means a carboxyl group substituted with an alkyl group, an aryl group, an arylalkyl group or a monovalent heterocyclic group, and usually has about 2 to 60 carbon atoms, preferably 2 to 48 carbon atoms. It is.
- substituted carboxyl group examples include methoxycarbonyl group, ethoxycarbonyl group, propoxycarbonyl group, isopropoxycarbonyl group, butoxycarbonyl group, isobutoxycarbonyl group, t-butoxycarbonyl group, pentyloxycarbonyl group, hexyloxycarbonyl Group, cyclohexyloxycarbonyl group, heptyloxycarbonyl group, octyloxycarbonyl group, 2-ethylhexyloxycarbonyl group, nonyloxycarbonyl group, decyloxycarbonyl group, 3,7-dimethyloctyloxycarbonyl group, dodecyloxycarbonyl group, Trifluoromethoxycarbonyl group, pentafluoroethoxycarbonyl group, perfluorobutoxycarbonyl group, perfluorohexyloxycarbonyl group, perfluorooctyl Le oxycarbon
- the “alkenyl group” may be linear, branched or cyclic.
- the number of carbon atoms of the straight-chain alkenyl group does not include the number of carbon atoms of the substituent, and is usually 2 to 30, and preferably 3 to 20.
- the number of carbon atoms of the branched and cyclic alkenyl groups is usually 3 to 30, preferably 4 to 20, not including the carbon atoms of the substituent.
- the alkenyl group may have a substituent.
- alkenyl group examples include a vinyl group, 1-propenyl group, 2-propenyl group, 2-butenyl group, 3-butenyl group, 3-pentenyl group, 4 -Pentenyl group, 1-hexenyl group, 5-hexenyl group, 7-octenyl group, and groups in which these groups have substituents.
- the “alkynyl group” may be linear, branched or cyclic.
- the number of carbon atoms of the alkynyl group is usually 2 to 20, preferably 3 to 20, not including the carbon atom of the substituent.
- the number of carbon atoms of the branched and cyclic alkynyl group is usually 4 to 30, preferably 4 to 20, not including the carbon atom of the substituent.
- the alkynyl group may have a substituent.
- alkynyl group examples include ethynyl group, 1-propynyl group, 2-propynyl group, 2-butynyl group, 3-butynyl group, 3-pentynyl group, 4 -Pentynyl group, 1-hexynyl group, 5-hexynyl group and groups in which these groups have a substituent.
- the ink composition of the present invention is an ink composition comprising a P-type semiconductor material, an N-type semiconductor material, and two types of solvents having a total weight of 70% by weight or more with 100% by weight of the total solvent.
- the hydrogen bond Hansen solubility parameter H1 (MPa 0.5 ) of the first solvent and the second solvent has a hydrogen bond Hansen solubility parameter H2 (MPa 0.5 ) in a relationship of 0.5 ⁇ (H2 ⁇ H1) ⁇ 5.0.
- the ink composition of the present invention is an ink composition comprising a P-type semiconductor material, an N-type semiconductor material, and two or more solvents including a first solvent and a second solvent,
- the total weight of the first solvent and the second solvent is 70% by weight or more with respect to 100% by weight of the total solvent contained in the ink composition;
- the boiling point of the first solvent is lower than the boiling point of the second solvent; and
- the hydrogen bond Hansen solubility parameter H1 (MPa 0.5 ) of the first solvent and the hydrogen bond Hansen solubility parameter H2 (MPa 0.5 ) of the second solvent are 0.5 ⁇ (H2 -H1)
- the upper limit of the sum total of the weight of a 1st solvent and a 2nd solvent is 100 weight% by making all the solvents into 100 weight%.
- the boiling point of the first solvent in the ink composition of the present invention is 120 ° C. or higher and 400 ° C. or lower.
- the ink composition of the present invention may further contain one or more other solvents.
- the weight of the first solvent is preferably the maximum among all the solvents contained in the ink composition. That is, the weight of the first solvent is preferably 35% by weight or more and more preferably 50% by weight or more in 100% by weight of the total solvent.
- the weight of the second solvent is preferably the same as the weight of the first solvent or the second largest among all the solvents.
- both the first solvent and the second solvent are 35% by weight, or both are 50% by weight. There are cases.
- the difference between the hydrogen bond Hansen solubility parameter H1 (MPa 0.5 ) of the first solvent and the hydrogen bond Hansen solubility parameter H2 (MPa 0.5 ) of the second solvent is usually 0.5 ⁇ (H2 ⁇ H1) ⁇ .
- H2 ⁇ H1 ⁇ 0.5 ⁇
- H2-H1 ⁇ 5.0 1.0 ⁇ (H2-H1) ⁇ 5.0, more preferably 1.7 ⁇ (H2-H1) ⁇ 5.0, and 2.1 ⁇ (H2 -H1) ⁇ 5.0 is more preferred
- 2.4 ⁇ (H2-H1) ⁇ 5.0 is even more preferred
- 2.4 ⁇ (H2-H1) ⁇ 4.6 is even more preferred.
- the difference between the polar Hansen solubility parameter P1 (MPa 0.5 ) of the first solvent and the polar Hansen solubility parameter P2 (MPa 0.5 ) of the second solvent is 1.0 ⁇ (P2-P1) ⁇ 9.0
- 1.0 ⁇ (P2-P1) ⁇ 9.0 Preferably, 2.0 ⁇ (P2-P1) ⁇ 9.0, more preferably 3.5 ⁇ (P2-P1) ⁇ 9.0, and 3.5 ⁇ (P2-P1) ⁇ 7.5. More preferably it is.
- the boiling point of the first solvent contained in the ink composition of the present invention is lower than the boiling point of the second solvent.
- the difference in boiling point between the first solvent and the second solvent is preferably 5 ° C. or more and 200 ° C. or less, and more preferably 10 ° C. or more and 180 ° C. or less.
- the boiling point of the first solvent is preferably 140 ° C. or higher, and more preferably 150 ° C. or higher.
- the boiling point of the first solvent is preferably 350 ° C. or lower, and more preferably 300 ° C. or lower.
- the first solvent contained in the ink composition of the present invention is preferably a solvent that is soluble in the P-type semiconductor material in the ink composition, and for both the P-type semiconductor material and the N-type semiconductor material.
- a solvent having solubility is more preferable.
- first solvents chlorine solvents such as 1,2-dichloroethane, 1,1,2-trichloroethane, chlorobenzene, o-dichlorobenzene, 1,2,4-trichlorobenzene, 1-chloronaphthalene; tetrahydrofuran, dioxane, anisole Ether solvents such as 4-methylanisole, diphenyl ether, dibenzyl ether; toluene, o-xylene, m-xylene, p-xylene, mesitylene, pseudocumene, 1,2,3,5-tetramethylbenzene, ethylbenzene, n- Aromatic hydrocarbon solvents such as hexylbenzene, cyclohexylbenzene, 1-methylnaphthalene; cyclohexane, methylcyclohexane, n-pentane, n-hexane, n-heptane, n-o
- the first solvent is preferably a chlorine solvent or an aromatic hydrocarbon solvent, more preferably an aromatic hydrocarbon solvent from the viewpoint of solubility of the P-type semiconductor material.
- the first solvent is preferably a compound having an alkyl group as a substituent among aromatic hydrocarbon solvents from the viewpoint of solubility of the P-type semiconductor material, and preferably having a methyl group as a substituent.
- a compound is preferred.
- the first solvent is preferably benzene substituted with an alkyl group among aromatic hydrocarbon solvents from the viewpoint of obtaining a good thin film, and includes toluene, o-xylene, m-xylene, p-xylene, mesitylene, More preferably pseudocumene, 1,2,3,5-tetramethylbenzene, ethylbenzene, n-hexylbenzene or cyclohexylbenzene, toluene, o-xylene, m-xylene, p-xylene, mesitylene, pseudocumene or 1, 2,3,5-tetramethylbenzene is more preferable, and mesitylene, pseudocumene or 1,2,3,5-tetramethylbenzene is still more preferable.
- the second solvent contained in the ink composition of the present invention is preferably a solvent that is soluble in the N-type semiconductor material in the ink composition.
- the second solvent include chlorine solvents such as 1,2-dichloroethane, 1,1,2-trichloroethane, chlorobenzene, o-dichlorobenzene, 1,2,4-trichlorobenzene, 1-chloronaphthalene; tetrahydrofuran, dioxane Ether solvents such as anisole, 4-methylanisole, diphenyl ether, dibenzyl ether; toluene, o-xylene, m-xylene, p-xylene, mesitylene, pseudocumene, 1,2,3,5-tetramethylbenzene, ethylbenzene, Aromatic hydrocarbon solvents such as n-hexylbenzene, cyclohexylbenzene, 1-methylnaphthalene; cyclo
- the second solvent preferably has an aromatic hydrocarbon ring from the viewpoint of obtaining a good thin film.
- the chlorine solvent include chlorobenzene, o-dichlorobenzene, 1,2,4-trichlorobenzene, 1-chloro Naphthalene, etc .; ether solvents such as anisole, 4-methylanisole, diphenyl ether, dibenzyl ether, etc .; aromatic hydrocarbon solvents such as toluene, o-xylene, m-xylene, p-xylene, mesitylene, pseudocumene, 1,2, 3,5-tetramethylbenzene, ethylbenzene, n-hexylbenzene, cyclohexylbenzene, 1-methylnaphthalene, etc .; ketone solvents such as acetophenone and propiophenone; ester solvents such as phenyl acetate, methyl benzoate, butyl benzoate, Benzyl be
- the second solvent is preferably an ether solvent, aromatic hydrocarbon solvent, ketone solvent or ester solvent from the viewpoint of solubility of the N-type semiconductor material, more preferably an ether solvent, ketone solvent or ester solvent, Even more preferably, it is a ketone solvent or an ester solvent.
- the ink composition of the present invention may contain other solvents in addition to the first solvent and the second solvent.
- the other solvent is preferably a solvent having a boiling point higher than that of the first solvent, and the difference in Hansen solubility parameter between the first solvent and the other solvent is different from that of the first solvent described above.
- a solvent that falls within a preferable range of the difference in Hansen solubility parameter between the two solvents is preferable.
- the hydrogen bond Hansen solubility parameter H1 (MPa 0.5 ) of the first solvent and the hydrogen bond Hansen solubility parameter H3 (MPa 0.5 ) of the other solvent are preferably 1.0 ⁇ (H3-H1) ⁇ 5.0, and 1.7 ⁇ ( H3-H1) ⁇ 5.0, more preferably 2.1 ⁇ (H3-H1) ⁇ 5.0, still more preferably 2.4 ⁇ (H3-H1) ⁇ 5.0, and 2.4 ⁇ (H3 Even more preferably, -H1) ⁇ 4.6.
- the other solvent is selected from the example of the second solvent, for example.
- the other solvent is preferably a solvent having a boiling point higher than that of the second solvent.
- the total weight of the first solvent and the second solvent contained in the ink composition of the present invention is 70% by weight or more based on 100% by weight of the total solvent, and the solubility of the P-type semiconductor material and / or the N-type semiconductor material. In view of the above, it is preferably 80% by weight or more, and more preferably 90% by weight or more.
- the ratio of the first solvent and the second solvent of the ink composition of the present invention is a weight ratio (weight of the first solvent: weight of the second solvent) from the viewpoint of solubility of the P-type semiconductor material and the N-type semiconductor material.
- the range is preferably 50:50 to 99.9: 0.1, more preferably 50:50 to 99: 1, still more preferably 70:30 to 99: 1, and 90:10. Even more preferred is ⁇ 99: 1.
- first solvent and the second solvent examples include toluene / diphenyl ether, toluene / dibenzyl ether, toluene / 1,2,3,5-tetramethylbenzene, toluene / acetophenone , Toluene / propiophenone, toluene / methyl benzoate, toluene / butyl benzoate, toluene / benzyl benzoate, o-xylene / diphenyl ether, o-xylene / dibenzyl ether, o-xylene / 1,2,3,5 -Tetramethylbenzene, o-xylene / acetophenone, o-xylene / propiophenone, o-xylene / methyl benzoate, o-xylene / butyl benzoate, o-xylene / /
- the P-type semiconductor material used in the present invention may be a low molecular compound or a high molecular compound.
- Examples of the low molecular weight compound P-type semiconductor material include phthalocyanine, metal phthalocyanine, porphyrin, metal porphyrin, oligothiophene, tetracene, pentacene, and rubrene.
- polymeric compound P-type semiconductor materials include polyvinyl carbazole and derivatives thereof, polysilane and derivatives thereof, polysiloxane derivatives having aromatic amines in the side chain or main chain, polyaniline and derivatives thereof, polythiophene and derivatives thereof, benzo Examples include dithiophene and derivatives thereof, polypyrrole and derivatives thereof, polyphenylene vinylene and derivatives thereof, polythienylene vinylene and derivatives thereof, and polyfluorene and derivatives thereof.
- the P-type semiconductor material is preferably a polymer compound from the viewpoint of the stability of the ink composition.
- the polymer compound contains a repeating unit represented by the following formula (I) and / or the following formula (II).
- a polymer compound is preferred.
- Ar 1 and Ar 2 represent a trivalent aromatic heterocyclic group, and Z represents a divalent group represented by (Z-1) to (Z-7). ]
- Ar 3 represents a divalent aromatic heterocyclic group.
- Z represents a group represented by any one of the following formulas (Z-1) to (Z-7).
- R represents a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, a monovalent heterocyclic group, A substituted amino group, acyl group, imine residue, substituted amide group, acid imide group, substituted carboxyl group, alkenyl group, alkynyl group, cyano group or nitro group is represented. In each of formula (Z-1) to formula (Z-7), when there are two R, they may be the same or different.
- the trivalent aromatic heterocyclic group represented by Ar 1 and Ar 2 is a hydrogen atom 3 on the aromatic ring from an optionally substituted heterocyclic compound having aromaticity.
- the carbon number of the trivalent aromatic heterocyclic group is usually 2 to 60, preferably 4 to 60, and more preferably 4 to 20.
- heterocyclic compound having aromaticity may have include a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, and a monovalent heterocyclic ring.
- a halogen atom an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, and a monovalent heterocyclic ring.
- the structural unit represented by the formula (I) is preferably a structural unit represented by the following formula (I-1). [In the formula (I-1), Z represents the same meaning as described above. ]
- Examples of the structural unit represented by the formula (I-1) include structural units represented by the formulas (501) to (505).
- R represents the same meaning as described above. When there are two R, they may be the same or different. ]
- the formula (501), the formula (502), the formula (503), The structural unit represented by the formula (504) is preferable, the structural unit represented by the formula (501) and the formula (504) is more preferable, and the structural unit represented by the formula (501) is particularly preferable.
- the divalent aromatic heterocyclic group represented by Ar 3 is obtained by removing two hydrogen atoms on the aromatic ring from an optionally substituted heterocyclic compound having aromaticity. The remaining atomic group.
- the divalent aromatic heterocyclic group usually has 2 to 60 carbon atoms, preferably 4 to 60 carbon atoms, and more preferably 4 to 20 carbon atoms.
- heterocyclic compound having aromaticity may have, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, a monovalent heterocyclic group, Examples include substituted amino groups, acyl groups, imine residues, substituted amide groups, acid imide groups, substituted carboxyl groups, alkenyl groups, alkynyl groups, cyano groups, and nitro groups.
- Examples of the divalent aromatic heterocyclic group represented by Ar 3 include the following formulas (101) to (185). (In the formula, R represents the same meaning as described above. When there are a plurality of R, they may be the same or different.)
- the structural unit represented by the formula (II) is preferably a structural unit represented by the following formulas (II-1) to (II-6). (Wherein, X 1 and X 2 each independently represents an oxygen atom or a sulfur atom, and R represents the same meaning as described above. When there are a plurality of R, they may be the same or different.)
- X 1 and X 2 in the formulas (II-2) to (II-6) are both sulfur atoms.
- the P-type semiconductor material may have two or more structural units of the formula (I) or may have two or more structural units of the formula (II).
- the polymer compound may contain a repeating unit represented by the following formula (III).
- Ar 4 represents an arylene group.
- An arylene group is an atomic group obtained by removing two hydrogen atoms from an aromatic hydrocarbon, having a condensed ring, two or more independent benzene rings or condensed rings bonded directly or via a group such as vinylene Also included.
- the arylene group may have a substituent. These are the same substituents as those exemplified above.
- the number of carbon atoms in the arylene group excluding the substituent is usually about 6 to 60, and preferably 6 to 20.
- the total number of carbon atoms including the substituent of the arylene group is usually about 6 to 100.
- arylene groups include phenylene groups (for example, the following formulas 1 to 3), naphthalenediyl groups (the following formulas 4 to 13), anthracene-diyl groups (the following formulas 14 to 19), biphenyl-diyl groups (the following formula 20 -25), terphenyl-diyl group (formula 26-28), condensed ring compound group (formula 29-35), fluorene-diyl group (formula 36-38), benzofluorene-diyl (formula 39- 46).
- phenylene groups for example, the following formulas 1 to 3
- naphthalenediyl groups the following formulas 4 to 13
- anthracene-diyl groups the following formulas 14 to 19
- biphenyl-diyl groups the following formula 20 -25
- terphenyl-diyl group the following formula 20 -25
- terphenyl-diyl group
- the polymer compound contained in the ink composition of the present invention contains the structural unit of formula (I) and / or the structural unit of formula (II), the structural unit of formula (I) and the structural unit of formula (II)
- the total amount of is usually from 20 to 100 mol%, based on 100 mol% of all the structural units contained in the polymer compound, and from 40 to 100 mol% from the viewpoint of charge transportability as a p-type semiconductor. It is preferably 50 to 100 mol%.
- the amount of the structural unit of the formula (I) is 100 mol%, usually 20 to 80 mol%, and preferably 30 to 80 mol% from the viewpoint of solubility of the polymer compound in the solvent, More preferably, it is ⁇ 80 mol%.
- the weight average molecular weight in terms of polystyrene of the polymer compound contained in the ink composition of the present invention is usually 1 ⁇ 10 3 to 1 ⁇ 10 8 , and from the viewpoint of solubility in a solvent, 1 ⁇ 10 3 to 1 ⁇ . 10 6 is preferred.
- the ink composition of the present invention may contain one type of P-type semiconductor material or two or more types.
- the N-type semiconductor material used in the present invention may be a low molecular compound or a high molecular compound.
- low-molecular N-type semiconductor materials include oxadiazole derivatives, anthraquinodimethane and its derivatives, benzoquinone and its derivatives, naphthoquinone and its derivatives, anthraquinone and its derivatives, tetracyanoanthraquino Dimethane and its derivatives, fluorenone derivatives, diphenyldicyanoethylene and its derivatives, diphenoquinone derivatives, metal complexes of 8-hydroxyquinoline and its derivatives, polyquinoline and its derivatives, polyquinoxaline and its derivatives, polyfluorene and its derivatives, C 60, etc. Fullerenes and derivatives thereof, phenanthrene derivatives such as bathocuproine, and the like.
- Polymeric N-type semiconductor materials include polyvinylcarbazole and derivatives thereof, polysilane and derivatives thereof, polysiloxane derivatives having aromatic amines in the side chain or main chain, polyaniline and derivatives thereof, polythiophene and derivatives thereof Derivatives, polypyrrole and derivatives thereof, polyphenylene vinylene and derivatives thereof, polythienylene vinylene and derivatives thereof, polyfluorene and derivatives thereof, and the like. Of these, fullerene and derivatives thereof are preferable.
- fullerene and fullerene derivatives include C 60 , C 70 , C 76 , C 78 , C 84 and derivatives thereof.
- a fullerene derivative represents a compound in which at least a part of fullerene is modified.
- Examples of fullerene derivatives include compounds represented by formula (N-1), compounds represented by formula (N-2), compounds represented by formula (N-3), and formula (N-4). And the compounds represented. (N-1) (N-2) (N-3) (N-4) (In the formulas (N-1) to (N-4), R a is an optionally substituted alkyl group, aryl group, monovalent heterocyclic group or group having an ester structure. a may be the same or different, R b represents an alkyl group or an aryl group, and a plurality of R b may be the same or different.)
- Examples of the group having an ester structure represented by Ra include a group represented by the formula (19). (19) (In the formula, u1 represents an integer of 1 to 6, u2 represents an integer of 0 to 6, and R c represents an alkyl group, an aryl group, or a monovalent heterocyclic group.)
- Examples of the C 60 fullerene derivative include the following compounds.
- Examples of the C 70 fullerene derivative include the following compounds.
- fullerene derivatives include [6,6] phenyl-C61 butyric acid methyl ester (C60PCBM, [6,6] -Phenyl C61 butyric acid methyl ester), [6,6] phenyl-C71 butyric acid methyl ester (C70PCBM, 6,6] -Phenyl C71 butyric acid methyl ester), [6,6] Phenyl-C85 butyric acid methyl ester (C84PCBM, [6,6] -Phenyl C85 butyric acid methyl ester), [6,6] thienyl-C61 butyric acid And methyl ester ([6,6] -Thienyl C61 butyric acid methyl ester).
- the ink composition of the present invention may contain one type of N-type semiconductor material or two or more types.
- the weight ratio of the P-type semiconductor material and the N-type semiconductor material in the ink composition of the present invention is preferably 9: 1 to 1: 9 from the viewpoint of photoelectric conversion efficiency, and is 2: 1 to 1: 9. More preferably, the ratio is 1: 1 to 1: 9, further preferably 1: 1 to 1: 5.
- the weight ratio of the solid content concentration including the P-type semiconductor material and the N-type semiconductor material in the ink composition is preferably 0.01 wt% to 20 wt% from the viewpoint of photoelectric conversion efficiency, and is 0.01 wt% to 10%. More preferably, it is more preferably 0.01 wt% to 5%, and particularly preferably 0.1% to 5%.
- the solid content may be dissolved or dispersed, but is preferably dissolved and more preferably completely dissolved.
- a thin film can be formed using the ink composition of the present invention.
- a preferable film forming method of the thin film of the present invention is a film forming method including a step of forming a coating film by a coating method using the ink composition of the present invention and a drying step of removing the solvent from the coating film.
- slit coating method, knife coating method, spin coating method, casting method, micro gravure coating method, gravure coating method, bar coating method, roll coating method, wire bar coating method, dip coating method, spray coating Coating methods such as screen printing method, gravure printing method, flexographic printing method, offset printing method, ink jet coating method, dispenser printing method, nozzle coating method, capillary coating method, slit coating method, capillary coating method, etc.
- the gravure coating method, the micro gravure coating method, the bar coating method, the knife coating method, the nozzle coating method, the ink jet coating method, and the spin coating method are preferable.
- the surface tension of the mixed solvent in the ink composition at 25 ° C. is preferably larger than 10 mN / m, more preferably larger than 10 mN / m and smaller than 100 mN / m, and more preferably 15 mN / m. More preferably, it is larger and smaller than 60 mN / m.
- Examples of the method for removing the solvent include drying methods such as a hot air drying method, an infrared heating drying method, a flash lamp annealing drying method, and a vacuum drying method.
- the electronic device of the present invention has a first electrode and a second electrode, and has an organic semiconductor layer between the first electrode and the second electrode, and the organic semiconductor layer includes the organic semiconductor layer of the present invention.
- the thin film of the present invention can exhibit high electron and / or hole transport properties, when the thin film is used in an element, it transports electrons and holes injected from the electrode or charges generated by light absorption. be able to. Taking advantage of these characteristics, it can be suitably used for various electronic devices such as photoelectric conversion devices and organic thin film transistors. Hereinafter, these elements will be described individually.
- the photoelectric conversion element of the present invention has a first electrode and a second electrode, and is produced using the ink composition of the present invention as an active layer between the first electrode and the second electrode.
- the photoelectric conversion element of the present invention has a first electrode and a second electrode, and has two or more active layers between the first electrode and the second electrode, In the photoelectric conversion element, at least one of the active layers is a thin film produced using the ink composition of the present invention.
- the photoelectric conversion element of the present invention includes a first electrode and a second electrode, and is produced using the ink composition of the present invention between the first electrode and the second electrode.
- the photoelectric conversion element has a first active layer including the formed thin film, and a second active layer including an electron-accepting compound such as a fullerene derivative adjacent to the first active layer.
- the photoelectric conversion element of the present invention is usually formed on a substrate.
- the substrate may be any substrate that does not chemically change when the electrodes are formed and the organic layer is formed.
- Examples of the material for the substrate include glass, plastic, polymer film, and silicon.
- the opposite electrode that is, the electrode far from the substrate
- the transparent or translucent electrode material examples include a conductive metal oxide film and a translucent metal thin film.
- indium oxide, zinc oxide, tin oxide, and their composite materials such as indium tin oxide (ITO), indium zinc oxide, etc., conductive materials, NESA, gold, platinum, silver, Copper is used, and ITO, indium / zinc / oxide, and tin oxide are preferable.
- the method for producing the electrode include a vacuum deposition method, a sputtering method, an ion plating method, a plating method, and the like.
- an organic transparent conductive film such as polyaniline and derivatives thereof, polythiophene and derivatives thereof may be used.
- One electrode may not be transparent or translucent, and a metal, a conductive polymer, etc. can be used as an electrode material of the electrode.
- the electrode material include metals such as lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium, barium, aluminum, scandium, vanadium, zinc, yttrium, indium, cerium, samarium, europium, terbium, ytterbium, etc. And one or more alloys selected from the group consisting of gold, silver, platinum, copper, manganese, titanium, cobalt, nickel, tungsten, and tin.
- Examples include alloys with metals, graphite, graphite intercalation compounds, polyaniline and derivatives thereof, and polythiophene and derivatives thereof.
- Examples of the alloy include magnesium-silver alloy, magnesium-indium alloy, magnesium-aluminum alloy, indium-silver alloy, lithium-aluminum alloy, lithium-magnesium alloy, lithium-indium alloy, and calcium-aluminum alloy.
- An additional intermediate layer other than the active layer may be used as a means for improving the photoelectric conversion efficiency.
- the material for the intermediate layer include alkali metals such as lithium fluoride, halides of alkaline earth metals, oxides such as titanium oxide, and PEDOT (poly-3,4-ethylenedioxythiophene).
- a preferred method for producing a photoelectric conversion element is a method for producing a photoelectric conversion element having a first electrode and a second electrode, and having an active layer between the first electrode and the second electrode. And a method for producing an element comprising a step of forming an active layer by applying the ink composition of the present invention on the first electrode by a coating method, and a step of forming a second electrode on the active layer. .
- the thin film produced using the ink composition of the present invention can also be used for an organic thin film transistor.
- the organic thin film transistor has a configuration including a source electrode and a drain electrode, an organic semiconductor layer (active layer) serving as a current path between these electrodes, and a gate electrode for controlling the amount of current passing through the current path.
- the organic semiconductor layer is composed of the thin film (organic thin film) described above. Examples of such an organic thin film transistor include a field effect type and an electrostatic induction type.
- a field effect organic thin film transistor includes a source electrode and a drain electrode, an organic semiconductor layer (active layer) serving as a current path between them, a gate electrode for controlling the amount of current passing through the current path, and an organic semiconductor layer and a gate electrode It is preferable to provide an insulating layer disposed between the two.
- the source electrode and the drain electrode are preferably provided in contact with the organic semiconductor layer (active layer), and the gate electrode is preferably provided with an insulating layer in contact with the organic semiconductor layer interposed therebetween.
- the organic semiconductor layer is constituted by an organic thin film including a thin film produced using the ink composition of the present invention.
- the static induction organic thin film transistor has a source electrode and a drain electrode, an organic semiconductor layer (active layer) serving as a current path between them, and a gate electrode that controls the amount of current passing through the current path. It is preferable to be provided in the organic semiconductor layer.
- the source electrode, the drain electrode, and the gate electrode provided in the organic semiconductor layer are preferably provided in contact with the organic semiconductor layer.
- the structure of the gate electrode may be a structure in which a current path flowing from the source electrode to the drain electrode is formed and the amount of current flowing through the current path can be controlled by a voltage applied to the gate electrode. An electrode is mentioned.
- the organic semiconductor layer is constituted by an organic thin film containing the compound of the present invention.
- the photoelectric conversion element of the present invention can be operated as an organic thin film solar cell by irradiating light such as sunlight from a transparent or translucent electrode to generate a photovoltaic force between the electrodes. It can also be used as an organic thin film solar cell module by integrating a plurality of organic thin film solar cells.
- the organic light sensor When light is applied from a transparent or translucent electrode in a state where a voltage is applied between the electrodes or in a state where no voltage is applied, a photocurrent flows and the organic light sensor can be operated. It can also be used as an organic image sensor by integrating a plurality of organic photosensors.
- the above-mentioned organic thin film transistor can be used as a pixel driving element used for controlling the pixel of an electrophoretic display, a liquid crystal display, an organic electroluminescence display, etc., and controlling the uniformity of screen luminance and the screen rewriting speed. .
- the organic thin film solar cell can basically have the same module structure as a conventional solar cell module.
- the solar cell module generally has a structure in which cells are formed on a support substrate such as metal or ceramic, and the cell is covered with a filling resin or protective glass, and light is taken in from the opposite side of the support substrate. It is also possible to use a transparent material such as tempered glass for the support substrate, configure a cell thereon, and take in light from the transparent support substrate side.
- a module structure called a super straight type, a substrate type, and a potting type, a substrate integrated module structure used in an amorphous silicon solar cell, and the like are known.
- the organic thin-film solar cell produced using the compound of the present invention can also be appropriately selected from these module structures depending on the purpose of use, the place of use and the environment.
- a typical super straight type or substrate type module cells are arranged at regular intervals between support substrates that are transparent on one or both sides and subjected to antireflection treatment, and adjacent cells are connected by metal leads or flexible wiring.
- the current collector electrode is connected to the outer edge portion, and the generated power is taken out to the outside.
- plastic materials such as ethylene vinyl acetate (EVA) may be used between the substrate and the cell in the form of a film or a filling resin depending on the purpose in order to protect the cell and improve the current collection efficiency.
- EVA ethylene vinyl acetate
- the surface protection layer is made of a transparent plastic film, or the protective function is achieved by curing the filling resin. It is possible to eliminate the supporting substrate on one side.
- the periphery of the support substrate is fixed in a sandwich shape with a metal frame in order to ensure internal sealing and module rigidity, and the support substrate and the frame are hermetically sealed with a sealing material.
- a flexible material is used for the cell itself, the support substrate, the filling material, and the sealing material, a solar cell can be formed on the curved surface.
- a solar cell using a flexible support such as a polymer film
- cells are sequentially formed while feeding out a roll-shaped support, cut to a desired size, and then the periphery is sealed with a flexible and moisture-proof material.
- the battery body can be produced.
- a module structure called “SCAF” described in Solar Energy Materials and Solar Cells, 48, p383-391 can also be used.
- a solar cell using a flexible support can be used by being bonded and fixed to a curved glass or the like.
- P-1 was synthesized with reference to the method described in WO2013051676.
- P-2 was synthesized with reference to the method described in JP 2010-74127 A.
- P-3 a product name: PTB7 (lot.YY6156) manufactured by 1-material was used.
- P-4 product name: PCE10 (lot.YY7132) manufactured by 1-material was used.
- P-5 Lumtec's product name: PSBTBT (lot. S9066-140930002) was used.
- P-6 was synthesized with reference to the method described in WO2011052709.
- P-7 was synthesized with reference to the method described in JP-A-2014-31362.
- N-1 a product name: E100 (lot. 11A0082-A) manufactured by Frontier Carbon Co., Ltd. was used.
- N-2 product name: ADS71BFA (lot.11F034E) manufactured by American Dye Source Co., Ltd. was used.
- the hydrogen bond Hansen parameter (H), polar Hansen parameter (P), dispersion Hansen parameter (D) and boiling point (bp) of the solvent used in this example are as shown in the table below.
- Example 1> (Preparation of ink composition) A mixed solvent was prepared using o-xylene as the first solvent, acetophenone as the second solvent, and a weight ratio of the first solvent to the second solvent of 97: 3. P-1 as a P-type semiconductor material is mixed with the mixed solvent in an amount of 0.5% by weight based on the total weight of the composition, and N-1 as an N-type semiconductor is mixed with 1.0% by weight based on the total weight of the composition and stirred at 85 ° C. for 3 hours Then, filtration was performed with a PTFE filter having a pore size of 5 ⁇ m to obtain an ink composition (I-1).
- dH represents the difference (H2-H1) between the hydrogen bond Hansen parameter (H1) of the first solvent and the hydrogen bond Hansen parameter (H2) of the second solvent.
- dP represents the difference (P2-P1) between the polar Hansen parameter (P1) of the first solvent and the polar Hansen parameter (P2) of the second solvent.
- dbp represents the difference (bp2-bp1) between the boiling point (bp1) of the first solvent and the second solvent (bp2).
- Example 16> (Production and evaluation of photoelectric conversion element) A glass substrate with an ITO film having a thickness of 150 nm was sputtered and surface treated by ozone UV treatment. A suspension of poly (3,4) ethylenedioxythiophene / polystyrene sulfonic acid dissolved in water (HC Starck B-Tech, Bytron P TP AI4083) was filtered through a filter having a pore size of 0.5 ⁇ m. The suspension after filtration was spin-coated on the ITO side of the substrate to form a film with a thickness of 70 nm. Subsequently, it was dried on the hot plate at 200 ° C. for 10 minutes in the air to form an organic layer.
- poly (3,4) ethylenedioxythiophene / polystyrene sulfonic acid dissolved in water HC Starck B-Tech, Bytron P TP AI4083
- the ink composition (I-1) was spin-coated on the organic layer, and then dried in a nitrogen atmosphere to form an active layer.
- the film thickness after drying was about 100 nm.
- Ca was formed in a film thickness of about 4 nm on the active layer, and subsequently Al was formed in a film thickness of about 70 nm to form an electrode.
- the sealing process was performed by adhere
- the shape of the obtained photoelectric conversion element was a 2 mm ⁇ 2 mm square.
- the obtained photoelectric conversion element was irradiated with a certain amount of light using a solar simulator (trade name: CEP-2000 type, irradiance 100 mW / cm 2 ) manufactured by Spectrometer Co., Ltd., and the generated current and voltage were measured. Short-circuit current density) was determined. The short circuit current density (Jsc) was 14.67 mA / cm 2 .
- Examples 17 to 30 and Comparative Examples 1 to 5 A photoelectric conversion device was prepared and evaluated in the same manner as in Example 6 except that the ink compositions (I-2) to (I-15) and (C-1) to (C-5) were used. . The results are shown in the table below.
- the photoelectric conversion elements of Examples 16 to 30 had higher short circuit current density than the photoelectric conversion elements of Comparative Examples 1 to 5.
- Examples 31 to 33 and Preparation Examples 6 to 7> Using the solvents listed in the table below as the first solvent and the second solvent, P-1 as the P-type semiconductor material (0.5% by weight with respect to the total weight of the composition), N-2 as the N-type semiconductor material (the entire composition Ink compositions (I-16) to (I-18) and (C-6) to (C-7) were prepared in the same manner as in Example 1, using 1.0% by weight). It was.
- Examples 34 to 36 and Comparative Examples 6 to 7> A photoelectric conversion device was produced and evaluated in the same manner as in Example 16 except that the ink compositions (I-31) to (I-33) and (C-6) to (C-7) were used. . The results are shown in the table below.
- the photoelectric conversion elements of Examples 34 to 36 had a higher short circuit current density than the photoelectric conversion elements of Comparative Examples 6 to 7.
- Examples 37 to 38 and Preparation Example 8> Using the solvents listed in the table below as the first and second solvents, P-2 as the P-type semiconductor material (0.5% by weight with respect to the total weight of the composition), N-1 as the N-type semiconductor material (the entire composition) Ink compositions (I-19) to (I-20) and (C-8) were prepared in the same manner as in Example 1, using 1.0% by weight).
- Examples 39 to 40 and Comparative Example 6> A photoelectric conversion device was prepared and evaluated in the same manner as in Example 16 except that the ink compositions (I-37) to (I-38) and (C-8) were used. The results are shown in the table below.
- the photoelectric conversion elements of Examples 39 to 40 had a higher short circuit current density than the photoelectric conversion element of Comparative Example 8.
- Example 41 and Preparation Examples 9 to 11> Using the solvents listed in the table below as the first and second solvents, P-2 as the P-type semiconductor material (0.5% by weight with respect to the total weight of the composition), N-1 as the N-type semiconductor material (the entire composition) Ink compositions (I-21) and (C-9) to (C-11) were prepared in the same manner as in Example 1, using 1.5% by weight).
- Example 42 and Comparative Examples 9 to 11> A photoelectric conversion device was produced and evaluated in the same manner as in Example 16 except that the ink compositions (I-21) and (C-9) to (C-11) were used. The results are shown in the table below.
- the photoelectric conversion element of Example 42 had a higher short-circuit current density than the photoelectric conversion elements of Comparative Examples 9-11.
- Examples 43 to 44 and Preparation Example 12> Using the solvents listed in the table below as the first and second solvents, P-3 as the P-type semiconductor material (0.5% by weight relative to the total weight of the composition) and N-2 as the N-type semiconductor material (the entire composition Ink compositions (I-22) to (I-23) and (C-12) were prepared in the same manner as in Example 1 using 0.75% by weight based on the weight.
- Examples 45 to 46 and Comparative Example 12 A photoelectric conversion device was prepared and evaluated in the same manner as in Example 16 except that the ink compositions (I-22) to (I-23) and (C-12) were used. The results are shown in the table below.
- the photoelectric conversion elements of Examples 45 to 46 had a higher short circuit current density than the photoelectric conversion element of Comparative Example 12.
- Examples 47 to 48 and Preparation Example 13> Using the solvents listed in the table below as the first and second solvents, P-4 as the P-type semiconductor material (0.5% by weight relative to the total weight of the composition), N-1 as the N-type semiconductor material (the entire composition Ink compositions (I-24) to (I-25) and (C-13) were prepared in the same manner as in Example 1, using 1.0% by weight based on the weight.
- Examples 49 to 50 and Comparative Example 13 A photoelectric conversion device was prepared and evaluated in the same manner as in Example 16 except that the ink compositions (I-24) to (I-25) and (C-13) were used. The results are shown in the table below.
- the photoelectric conversion elements of Examples 49 to 50 had a higher short circuit current density than the photoelectric conversion element of Comparative Example 13.
- Example 51 and Preparation Example 14> Using the solvents listed in the table below as the first and second solvents, P-5 as the P-type semiconductor material (1.0% by weight relative to the total weight of the composition) and N-1 as the N-type semiconductor material (the entire composition Ink compositions (I-27) and (C-14) were prepared in the same manner as in Example 1 using 1.0% by weight).
- Example 52 and Comparative Example 14 A photoelectric conversion device was prepared and evaluated in the same manner as in Example 16 except that the ink compositions (I-26) and (C-14) were used. The results are shown in the table below.
- the photoelectric conversion element of Example 52 had a higher short circuit current density than the photoelectric conversion element of Comparative Example 14.
- Examples 53 to 54 and Preparation Example 15> Using the solvents listed in the table below as the first solvent and the second solvent, P-6 as the P-type semiconductor material (1.0% by weight relative to the total weight of the composition), N-1 as the N-type semiconductor material (the entire composition Ink compositions (I-27) to (I-28) and (C-15) were prepared in the same manner as in Example 1, using 2.0% by weight).
- Examples 55 to 56 and Comparative Example 15 A photoelectric conversion device was produced and evaluated in the same manner as in Example 16 except that the ink compositions (I-27) to (I-28) and (C-15) were used. The results are shown in the table below.
- the photoelectric conversion elements of Examples 55 to 56 had higher short-circuit current density than the photoelectric conversion element of Comparative Example 15.
- Example 57 and Preparation Example 16> Using the solvents listed in the table below as the first and second solvents, P-7 as the P-type semiconductor material (1.0% by weight relative to the total weight of the composition), N-1 as the N-type semiconductor material (the entire composition Ink compositions (I-29) and (C-16) were prepared in the same manner as in Example 1 using 2.0% by weight).
- Example 58 and Comparative Example 16> A photoelectric conversion device was prepared and evaluated in the same manner as in Example 16 except that the ink compositions (I-29) and (C-16) were used. The results are shown in the table below.
- the photoelectric conversion element of Example 58 had a short circuit current density higher than that of the photoelectric conversion element of Comparative Example 16.
- an ink composition capable of producing a photoelectric conversion element capable of obtaining a high short-circuit current density by including two kinds of solvents defined by a boiling point and a hydrogen bond Hansen solubility parameter. .
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Abstract
Description
〔1〕P型半導体材料と、N型半導体材料と、第一溶媒及び第二溶媒を含む2種以上の溶媒とを含むインク組成物であって、
第一溶媒及び第二溶媒の重量の合計が、該インク組成物が含む全溶媒を100重量%として70重量%以上であり;
第一溶媒の沸点が第二溶媒の沸点より低く;
第一溶媒の沸点が120℃以上400℃以下であり;かつ
第一溶媒の水素結合ハンセン溶解度パラメータH1(MPa0.5)と第二溶媒の水素結合ハンセン溶解度パラメータH2(MPa0.5)が、0.5≦(H2-H1)≦5.0 の関係にあるインク組成物。
置換アミノ基の炭素原子数は、通常2~30である。
アルケニル基は、置換基を有していてもよく、アルケニル基の例としては、ビニル基、1-プロペニル基、2-プロペニル基、2-ブテニル基、3-ブテニル基、3-ペンテニル基、4-ペンテニル基、1-ヘキセニル基、5-ヘキセニル基、7-オクテニル基、および、これらの基が置換基を有する基が挙げられる。
アルキニル基は、置換基を有していてもよく、アルキニル基の例としては、エチニル基、1-プロピニル基、2-プロピニル基、2-ブチニル基、3-ブチニル基、3-ペンチニル基、4-ペンチニル基、1-ヘキシニル基、5-ヘキシニル基、および、これらの基が置換基を有する基が挙げられる。
本発明のインク組成物は、P型半導体材料と、N型半導体材料と、重量の合計が全溶媒を100重量%として70重量%以上である2種の溶媒とを含むインク組成物であって、前記2種の溶媒のうち、沸点が低い方を第一溶媒とし、沸点が高い方を第二溶媒としたとき、第一溶媒の水素結合ハンセン溶解度パラメータH1(MPa0.5)と第二溶媒の水素結合ハンセン溶解度パラメータH2(MPa0.5)が、0.5≦(H2-H1)≦5.0 の関係にある、インク組成物である。
即ち、本発明のインク組成物は、P型半導体材料と、N型半導体材料と、第一溶媒及び第二溶媒を含む2種以上の溶媒とを含むインク組成物であって、
第一溶媒及び第二溶媒の重量の合計が該インク組成物が含む全溶媒を100重量%として70重量%以上であり;
第一溶媒の沸点が第二溶媒の沸点より低く;かつ
第一溶媒の水素結合ハンセン溶解度パラメータH1(MPa0.5)と第二溶媒の水素結合ハンセン溶解度パラメータH2(MPa0.5)が、0.5≦(H2-H1)≦5.0 の関係にあるインク組成物である。
尚、第一溶媒及び第二溶媒の重量の合計の上限は全溶媒を100重量%として100重量%である。
また、本発明のインク組成物における第一溶媒の沸点は120℃以上400℃以下である。
本発明で用いる水素結合ハンセン溶解度パラメータおよび極性ハンセン溶解度パラメータは、「Hansen solubility parameters in practice 4th edition」の値を使用する。
本発明のインク組成物が含む、第一溶媒の沸点は第二溶媒の沸点よりも低い。高い電流密度を得る観点から第一溶媒と第二溶媒の沸点差が、5℃以上200℃以下であることが好ましく、10℃以上180℃以下であることがより好ましい。
本発明のインク組成物が含む第一溶媒は、インク組成物中のP型半導体材料に対して溶解性を有する溶媒であることが好ましく、P型半導体材料及びN型半導体材料の両方に対して溶解性を有する溶媒であることがより好ましい。第一溶媒の例、1,2-ジクロロエタン、1,1,2-トリクロロエタン、クロロベンゼン、o-ジクロロベンゼン、1,2,4-トリクロロベンゼン、1-クロロナフタレン等の塩素溶媒;テトラヒドロフラン、ジオキサン、アニソール、4-メチルアニソール、ジフェニルエーテル、ジベンジルエーテル等のエーテル溶媒;トルエン、o-キシレン、m-キシレン、p-キシレン、メシチレン、プソイドクメン、1,2,3,5-テトラメチルベンゼン、エチルベンゼン、n-ヘキシルベンゼン、シクロヘキシルベンゼン、1-メチルナフタレン等の芳香族炭化水素溶媒;シクロヘキサン、メチルシクロヘキサン、n-ペンタン、n-ヘキサン、n-へプタン、n-オクタン、n-ノナン、n-デカン、n-デカン、ビシクロヘキシル等の脂肪族炭化水素溶媒;アセトン、メチルエチルケトン、シクロヘキサノン、アセトフェノン、プロピオフェノン等のケトン溶媒;酢酸エチル、酢酸ブチル、酢酸フェニル、エチルセルソルブアセテート、安息香酸メチル、安息香酸ブチル、安息香酸ベンジル等のエステル溶媒;エチレングリコール、グリセリン、1,2-ヘキサンジオール等の多価アルコール溶媒;イソプロピルアルコール、シクロヘキサノール等のアルコール系溶媒;ジメチルスルホキシド等のスルホキシド溶媒;N-メチル-2-ピロリドン、N,N-ジメチルホルムアミド等のアミド溶媒が挙げられる。
本発明のインク組成物が含む第二溶媒は、インク組成物中のN型半導体材料に対して溶解性を有する溶媒であることが好ましい。第二溶媒としては、例えば、1,2-ジクロロエタン、1,1,2-トリクロロエタン、クロロベンゼン、o-ジクロロベンゼン、1,2,4-トリクロロベンゼン、1-クロロナフタレン等の塩素溶媒;テトラヒドロフラン、ジオキサン、アニソール、4-メチルアニソール、ジフェニルエーテル、ジベンジルエーテル等のエーテル溶媒;トルエン、o-キシレン、m-キシレン、p-キシレン、メシチレン、プソイドクメン、1,2,3,5-テトラメチルベンゼン、エチルベンゼン、n-ヘキシルベンゼン、シクロヘキシルベンゼン、1-メチルナフタレン等の芳香族炭化水素溶媒;シクロヘキサン、メチルシクロヘキサン、n-ペンタン、n-ヘキサン、n-へプタン、n-オクタン、n-ノナン、n-デカン、n-デカン、ビシクロヘキシル等の脂肪族炭化水素溶媒;アセトン、メチルエチルケトン、シクロヘキサノン、アセトフェノン、プロピオフェノン等のケトン溶媒;酢酸エチル、酢酸ブチル、酢酸フェニル、エチルセルソルブアセテート、安息香酸メチル、安息香酸ブチル、安息香酸ベンジル等のエステル溶媒;エチレングリコール、グリセリン、1,2-ヘキサンジオール等の多価アルコール溶媒;イソプロピルアルコール、シクロヘキサノール等のアルコール溶媒;ジメチルスルホキシド等のスルホキシド溶媒;N-メチル-2-ピロリドン、N,N-ジメチルホルムアミド等のアミド溶媒が挙げられる。
本発明のインク組成物は、第一溶媒および第二溶媒以外に他の溶媒を含んでいてもよい。他の溶媒が含まれる場合、他の溶媒としては、第一溶媒より沸点が高い溶媒が好ましく、第一溶媒と他の溶媒とのハンセン溶解度パラメータの差が、上記に記載した第一溶媒と第二溶媒のハンセン溶解度パラメータの差の好ましい範囲に入る溶媒であることが好ましい。即ち、第一溶媒の水素結合ハンセン溶解度パラメータH1(MPa0.5)と他の溶媒の水素結合ハンセン溶解度パラメータH3(MPa0.5)が1.0≦(H3-H1)≦5.0であることが好ましく、1.7≦(H3-H1)≦5.0であることがより好ましく、2.1≦(H3-H1)≦5.0であることがさらに好ましく、2.4≦(H3-H1)≦5.0であることがさらにより好ましく、2.4≦(H3-H1)≦4.6であることがさらにより好ましい。他の溶媒は、例えば、第二溶媒の例から選ばれる。
本発明のインク組成物に含まれる第一溶媒と第二溶媒の重量の合計は、全溶媒を100重量%として70重量%以上であり、P型半導体材料および/またはN型半導体材料の溶解性の観点から、80重量%以上であることが好ましく、90重量%以上であることがより好ましい。本発明のインク組成物の第一溶媒と第二溶媒の比率は、P型半導体材料とN型半導体材料の溶解性の観点から、重量比(第一溶媒の重量:第二溶媒の重量)で50:50~99.9:0.1の範囲であることが好ましく、50:50~99:1であることがより好ましく、70:30~99:1であることがさらに好ましく、90:10~99:1であることがさらにより好ましい。
本発明に使用されるP型半導体材料は、低分子化合物であっても高分子化合物であってもよい。
式(120)、式(121)、式(124)、式(125)、式(132)、式(136)、式(140)、式(142)、式(146)、式(148)、式(156))、式(159)、式(160)、式(163)、式(173)、式(175)、式(176)、式(182)および式(184)で表される基がより好ましく、
式(136)、式(140)、式(142)、式(146)、式(148)、式(160)、式(163)、式(173)、式(176)、式(182)および式(184)で表される基がさらに好ましい。
(式中、X1及びX2は、それぞれ独立に、酸素原子または硫黄原子を表し、Rは前述と同じ意味を表す。Rが複数ある場合、それらは同一でも異なっていてもよい。)
アリーレン基における置換基を除いた部分の炭素数は通常6~60程度であり、好ましくは6~20である。アリーレン基の置換基を含めた全炭素数は、通常6~100程度である。
アリーレン基の例としては、フェニレン基(例えば、下式1~3)、ナフタレンジイル基(下式4~13)、アントラセン-ジイル基(下式14~19)、ビフェニル-ジイル基(下式20~25)、ターフェニル-ジイル基(下式26~28)、縮合環化合物基(下式29~35)、フルオレン-ジイル基(下式36~38)、ベンゾフルオレン-ジイル(下式39~46)などがあげられる。
本発明のインク組成物が含有する高分子化合物が、式(I)の構成単位および/または式(II)の構成単位を含む場合、式(I)の構成単位および式(II)の構成単位の合計量は、高分子化合物が含む全ての構成単位の量を100モル%として、通常20~100モル%であり、p型半導体としての電荷輸送性の観点から40~100モル%であることが好ましく、50~100モル%であることがより好ましい。
本発明のインク組成物が含有する高分子化合物が、式(I)の構成単位および式(II)の構成単位を含む場合、式(I)の構成単位の量は、式(I)の構成単位および式(II)の構成単位の合計量を100モル%として、通常20~80モル%であり、高分子化合物の溶媒に対する溶解性の観点から30~80モル%であることが好ましく、40~80モル%であることがより好ましい。
本発明のインク組成物が含有する高分子化合物のポリスチレン換算の重量平均分子量は、通常1×103~1×108であり、溶媒への溶解性の観点から、1×103~1×106であることが好ましい。
本発明に使用されるN型半導体材料は、低分子化合物であっても高分子化合物であってもよい。低分子のN型半導体材料(電子受容性化合物)の例としては、オキサジアゾール誘導体、アントラキノジメタン及びその誘導体、ベンゾキノン及びその誘導体、ナフトキノン及びその誘導体、アントラキノン及びその誘導体、テトラシアノアントラキノジメタン及びその誘導体、フルオレノン誘導体、ジフェニルジシアノエチレン及びその誘導体、ジフェノキノン誘導体、8-ヒドロキシキノリン及びその誘導体の金属錯体、ポリキノリン及びその誘導体、ポリキノキサリン及びその誘導体、ポリフルオレン及びその誘導体、C60等のフラーレン類及びその誘導体、バソクプロイン等のフェナントレン誘導体等が挙げられる。
(N-1) (N-2) (N-3) (N-4)
(式(N-1)~(N-4)中、Raは、置換されていてもよいアルキル基、アリール基、1価の複素環基又はエステル構造を有する基である。複数個あるRaは、同一であっても相異なってもよい。Rbはアルキル基又はアリール基を表す。複数個あるRbは、同一であっても相異なってもよい。)
(19)
(式中、u1は、1~6の整数を表す、u2は、0~6の整数を表す、Rcは、アルキル基、アリール基又は1価の複素環基を表す。)
本発明のインク組成物中のP型半導体材料とN型半導体材料の重量比率は、光電変換効率の観点から9:1~1:9であることが好ましく、2:1~1:9であることがより好ましく、1:1~1:9であることがさらに好ましく、1:1~1:5であることが特に好ましい。
インク組成物中のP型半導体材料およびN型半導体材料を含む固形分濃度の重量比率は、光電変換効率の観点から0.01wt%~20wt%であることが好ましく、0.01wt%~10%であることがより好ましく、0.01wt%~5%であることがさらに好ましく、0.1%~5%であることが特に好ましい。固形分は溶解していても分散していてもよいが、溶解していることが好ましく、完全に溶解していることがより好ましい。
本発明のインク組成物を用いて薄膜を成膜することができる。本発明の薄膜の好ましい成膜方法は、本発明のインク組成物を用いて塗布法により塗膜を形成する工程と、前記塗膜から溶媒を除去する乾燥工程とを含む成膜方法である。
本発明の電子素子は、第1の電極と第2の電極とを有し、第1の電極と該第2の電極との間に有機半導体層を有し、該有機半導体層に本発明の薄膜を含有する電子素子である。
本発明の光電変換素子は、第1の電極と第2の電極とを有し、前記第1の電極及び前記第2の電極の間に活性層として本発明のインク組成物を用いて作製された薄膜を有する光電変換素子である。第1の電極および第2の電極の少なくとも一方が透明又は半透明であることが好ましい。
電極材料として、ポリアニリン及びその誘導体、ポリチオフェン及びその誘導体等の有機の透明導電膜を用いてもよい。
光電変換素子の好ましい製造方法は、第1の電極と第2の電極とを有し、該第1の電極と該第2の電極との間に活性層を有する光電変換素子の製造方法であって、該第1の電極上に本発明のインク組成物を塗布法により塗布して活性層を形成する工程、該活性層上に第2の電極を形成する工程を有する素子の製造方法である。
本発明のインク組成物を用いて作製した薄膜は、有機薄膜トランジスタにも用いることができる。有機薄膜トランジスタとしては、ソース電極及びドレイン電極と、これらの電極間の電流経路となる有機半導体層(活性層)と、この電流経路を通る電流量を制御するゲート電極とを備えた構成を有するものが挙げられ、有機半導体層が上述した薄膜(有機薄膜)によって構成されるものである。このような有機薄膜トランジスタとしては、電界効果型、静電誘導型等が挙げられる。
特に、ソース電極及びドレイン電極が、有機半導体層(活性層)に接して設けられており、さらに有機半導体層に接した絶縁層を挟んでゲート電極が設けられていることが好ましい。電界効果型有機薄膜トランジスタにおいては、有機半導体層が、本発明のインク組成物を用いて作製した薄膜を含む有機薄膜によって構成される。
本発明の光電変換素子は、透明又は半透明の電極から太陽光等の光を照射することにより、電極間に光起電力が発生し、有機薄膜太陽電池として動作させることができる。有機薄膜太陽電池を複数集積することにより有機薄膜太陽電池モジュールとして用いることもできる。
有機薄膜太陽電池は、従来の太陽電池モジュールと基本的には同様のモジュール構造をとりうる。太陽電池モジュールは、一般的には金属、セラミック等の支持基板の上にセルが構成され、その上を充填樹脂や保護ガラス等で覆い、支持基板の反対側から光を取り込む構造をとるが、支持基板に強化ガラス等の透明材料を用い、その上にセルを構成してその透明の支持基板側から光を取り込む構造とすることも可能である。具体的には、スーパーストレートタイプ、サブストレートタイプ、ポッティングタイプと呼ばれるモジュール構造、アモルファスシリコン太陽電池などで用いられる基板一体型モジュール構造等が知られている。本発明の化合物を用いて製造される有機薄膜太陽電池も使用目的や使用場所及び環境により、適宜これらのモジュール構造を選択できる。
また、外部からの衝撃が少ないところなど表面を硬い素材で覆う必要のない場所において使用する場合には、表面保護層を透明プラスチックフィルムで構成し、又は上記充填樹脂を硬化させることによって保護機能を付与し、片側の支持基板をなくすことが可能である。支持基板の周囲は、内部の密封及びモジュールの剛性を確保するため金属製のフレームでサンドイッチ状に固定し、支持基板とフレームの間は封止材料で密封シールする。また、セルそのものや支持基板、充填材料及び封止材料に可撓性の素材を用いれば、曲面の上に太陽電池を構成することもできる。ポリマーフィルム等のフレキシブル支持体を用いた太陽電池の場合、ロール状の支持体を送り出しながら順次セルを形成し、所望のサイズに切断した後、周縁部をフレキシブルで防湿性のある素材でシールすることにより電池本体を作製できる。また、Solar Energy Materials and Solar Cells, 48,p383-391記載の「SCAF」とよばれるモジュール構造とすることもできる。更に、フレキシブル支持体を用いた太陽電池は曲面ガラス等に接着固定して使用することもできる。
P-2は、特開2010-74127号公報に記載の方法を参考に合成した。
P-3は、1-material社製、商品名:PTB7(lot.YY6156)を使用した。
P-4は、1-material社製、商品名:PCE10(lot.YY7132)を使用した。
P-5は、Lumtec社製、商品名:PSBTBT(lot. S9066-140930002)を使用した。
P-6は、WO2011052709に記載の方法を参考に合成した。
P-7は、特開2014-31362号公報に記載の方法を参考に合成した。
N-1は、フロンティアカーボン社製、商品名:E100(lot.11A0082-A)を使用した。
N-2は、アメリカンダイソース社製、商品名:ADS71BFA(lot.11F034E)を使用した。
(インク組成物の調製)
第一溶媒としてo-キシレン、第二溶媒としてアセトフェノンを用い、第一溶媒と第二溶媒の重量比を97:3として混合溶媒を作製した。前記混合溶媒にP型半導体材料としてP-1を組成物全体重量に対し0.5重量%、N型半導体としてN-1を組成物全体重量に対し1.0重量%を混合し、85℃で3時間撹拌を行った後、孔径5μmのPTFEフィルターにて濾過を行い、インク組成物(I-1)を得た。
第一溶媒、第二溶媒および第三溶媒を下表で用いた溶媒を使用した以外は、実施例1と同量のP型半導体材料およびN型半導体材料を使用して、インク組成物(I-2)~(I-15)および(C-1)~(C-5)の作製を行った。
表中dHは、第一溶媒の水素結合ハンセンパラメーター(H1)と第二溶媒の水素結合ハンセンパラメーター(H2)との差(H2-H1)を表す。
dPは、第一溶媒の極性ハンセンパラメーター(P1)と第二溶媒の極性ハンセンパラメーター(P2)との差(P2-P1)を表す。
dbpは、第一溶媒の沸点(bp1)と第二溶媒の沸点(bp2)との差(bp2-bp1)を表す。
(光電変換素子の作製と評価)
スパッタ法により150nmの厚みでITO膜を付けたガラス基板をオゾンUV処理して表面処理を行った。ポリ(3,4)エチレンジオキシチオフェン/ポリスチレンスルフォン酸を水に溶解させた懸濁液(HCスタルクビーテック社製、Bytron P TP AI4083)を孔径0.5μmのフィルターでろ過した。ろ過後の懸濁液を、基板のITO側にスピンコートして70nmの厚みで成膜した。次いで、大気中において、ホットプレート上で200℃で10分間乾燥させ、有機層を形成した。次に、インク組成物(I-1)を、該有機層上にスピンコートした後、窒素雰囲気中で乾燥を行い、活性層を形成した。乾燥後の膜厚は約100nmであった。その後、抵抗加熱蒸着装置内にて、活性層の上部にCaを約4nmの膜厚で成膜し、続いてAlを約70nmの膜厚で成膜し、電極を形成した。次いで、エポキシ樹脂(急速硬化型アラルダイト)を封止剤として用いてガラス基板を接着することで封止処理を施し、光電変換素子を得た。得られた光電変換素子の形状は2mm×2mmの正方形であった。得られた光電変換素子にソーラシミュレーター(分光計器製、商品名:CEP-2000型、放射照度100mW/cm2)を用いて一定の光を照射し、発生する電流と電圧を測定し、Jsc(短絡電流密度)を求めた。
短絡電流密度(Jsc)は14.67 mA/cm2であった。
第一溶媒および第二溶媒を下表に記載した溶媒を使用し、P型半導体材料としてP-1(組成物全体重量に対し0.5重量%)、N型半導体材料としてN-2(組成物全体重量に対し1.0重量%)を使用して、実施例1と同様の方法でインク組成物(I-16)~(I-18)および(C-6)~(C-7)の作製を行った。
第一溶媒および第二溶媒を下表に記載した溶媒を使用し、P型半導体材料としてP-2(組成物全体重量に対し0.5重量%)、N型半導体材料としてN-1(組成物全体重量に対し1.0重量%)を使用して、実施例1と同様の方法でインク組成物(I-19)~(I-20)および(C-8)の作製を行った。
第一溶媒および第二溶媒を下表に記載した溶媒を使用し、P型半導体材料としてP-2(組成物全体重量に対し0.5重量%)、N型半導体材料としてN-1(組成物全体重量に対し1.5重量%)を使用して、実施例1と同様の方法でインク組成物(I-21)および(C-9)~(C-11)の作製を行った。
第一溶媒および第二溶媒を下表に記載した溶媒を使用し、P型半導体材料としてP-3(組成物全体重量に対し0.5重量%)、N型半導体材料としてN-2(組成物全体重量に対し0.75重量%)を使用して、実施例1と同様の方法でインク組成物(I-22)~(I-23)および(C-12)の作製を行った。
第一溶媒および第二溶媒を下表に記載した溶媒を使用し、P型半導体材料としてP-4(組成物全体重量に対し0.5重量%)、N型半導体材料としてN-1(組成物全体重量に対し1.0重量%)を使用して、実施例1と同様の方法でインク組成物(I-24)~(I-25)および(C-13)の作製を行った。
第一溶媒および第二溶媒を下表に記載した溶媒を使用し、P型半導体材料としてP-5(組成物全体重量に対し1.0重量%)、N型半導体材料としてN-1(組成物全体重量に対し1.0重量%)を使用して、実施例1と同様の方法でインク組成物(I-27)および(C-14)の作製を行った。
第一溶媒および第二溶媒を下表に記載した溶媒を使用し、P型半導体材料としてP-6(組成物全体重量に対し1.0重量%)、N型半導体材料としてN-1(組成物全体重量に対し2.0重量%)を使用して、実施例1と同様の方法でインク組成物(I-27)~(I-28)および(C-15)の作製を行った。
第一溶媒および第二溶媒を下表に記載した溶媒を使用し、P型半導体材料としてP-7(組成物全体重量に対し1.0重量%)、N型半導体材料としてN-1(組成物全体重量に対し2.0重量%)を使用して、実施例1と同様の方法でインク組成物(I-29)および(C-16)の作製を行った。
Claims (12)
- P型半導体材料と、N型半導体材料と、第一溶媒及び第二溶媒を含む2種以上の溶媒とを含むインク組成物であって、
第一溶媒及び第二溶媒の重量の合計が該インク組成物が含む全溶媒を100重量%として70重量%以上であり;
第一溶媒の沸点が第二溶媒の沸点より低く;
第一溶媒の沸点が120℃以上400℃以下であり;かつ
第一溶媒の水素結合ハンセン溶解度パラメータH1(MPa0.5)と第二溶媒の水素結合ハンセン溶解度パラメータH2(MPa0.5)が、0.5≦(H2-H1)≦5.0 の関係にあるインク組成物。 - 第一溶媒の重量が、全溶媒中最大である、請求項1に記載のインク組成物。
- 第二溶媒の重量が、第一溶媒の重量と同量又は全溶媒中二番目に大きい、請求項2に記載のインク組成物。
- 第一溶媒の極性ハンセン溶解度パラメータP1(MPa0.5)と第二溶媒の極性ハンセン溶解度パラメータP2(MPa0.5)が、1.0≦(P2-P1)≦9.0 の関係にある請求項1~3のいずれか一項に記載のインク組成物。
- 第一溶媒が芳香族炭化水素溶媒である請求項1~4のいずれか一項に記載のインク組成物。
- 第二溶媒がエーテル溶媒、芳香族炭化水素溶媒、ケトン溶媒またはエステル溶媒である請求項1~5のいずれか一項に記載のインク組成物。
- P型半導体材料が高分子化合物である請求項1~6のいずれか一項に記載のインク組成物。
- N型半導体材料がフラーレン又はフラーレン誘導体である請求項1~7のいずれか一項に記載のインク組成物。
- 請求項1~8のいずれか一項に記載のインク組成物を用いて成膜した薄膜。
- 第1の電極と第2の電極とを有し、前記第1の電極及び前記第2の電極の間に活性層として請求項9に記載の薄膜を有する有機光電変換素子。
- 請求項10に記載の有機光電変換素子を有する太陽電池モジュール。
- 請求項10に記載の有機光電変換素子を有するセンサー。
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KR102341244B1 (ko) | 2021-12-20 |
EP3496174A1 (en) | 2019-06-12 |
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KR101815432B1 (ko) | 2018-01-04 |
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US20170237012A1 (en) | 2017-08-17 |
KR20170070252A (ko) | 2017-06-21 |
EP3496174B1 (en) | 2024-06-12 |
CN107109090B (zh) | 2021-10-08 |
EP3219765A1 (en) | 2017-09-20 |
EP3219765B1 (en) | 2019-01-30 |
EP3219765A4 (en) | 2017-11-08 |
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