WO2013040791A1 - 二氟代苯并三唑基太阳能电池聚合材料及其制备方法和应用 - Google Patents
二氟代苯并三唑基太阳能电池聚合材料及其制备方法和应用 Download PDFInfo
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- WO2013040791A1 WO2013040791A1 PCT/CN2011/080122 CN2011080122W WO2013040791A1 WO 2013040791 A1 WO2013040791 A1 WO 2013040791A1 CN 2011080122 W CN2011080122 W CN 2011080122W WO 2013040791 A1 WO2013040791 A1 WO 2013040791A1
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- WIPO (PCT)
- Prior art keywords
- solar cell
- difluorobenzotriazole
- polymeric material
- based solar
- organic
- Prior art date
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- 239000000463 material Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title abstract description 17
- -1 Difluoro benzotriazolyl Chemical group 0.000 title abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 15
- LQDBLQVSGVTZSP-UHFFFAOYSA-N 4,5-difluoro-2h-benzotriazole Chemical compound FC1=CC=C2NN=NC2=C1F LQDBLQVSGVTZSP-UHFFFAOYSA-N 0.000 claims description 38
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 32
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 20
- 229910052763 palladium Inorganic materials 0.000 claims description 16
- 239000002861 polymer material Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 229940126062 Compound A Drugs 0.000 claims description 12
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 claims description 12
- 238000006619 Stille reaction Methods 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 10
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 8
- 239000003446 ligand Substances 0.000 claims description 8
- BWHDROKFUHTORW-UHFFFAOYSA-N tritert-butylphosphane Chemical compound CC(C)(C)P(C(C)(C)C)C(C)(C)C BWHDROKFUHTORW-UHFFFAOYSA-N 0.000 claims description 8
- 239000011449 brick Substances 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 claims description 7
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003960 organic solvent Substances 0.000 claims description 6
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 claims description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 3
- MFHKEJIIHDNPQE-UHFFFAOYSA-N n-nonylnonan-1-amine Chemical compound CCCCCCCCCNCCCCCCCCC MFHKEJIIHDNPQE-UHFFFAOYSA-N 0.000 claims 1
- 238000000746 purification Methods 0.000 claims 1
- 229920000642 polymer Polymers 0.000 abstract description 16
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 abstract description 6
- 125000001153 fluoro group Chemical group F* 0.000 abstract description 5
- 125000000524 functional group Chemical group 0.000 abstract description 5
- 239000012964 benzotriazole Substances 0.000 abstract description 3
- 150000002391 heterocyclic compounds Chemical class 0.000 abstract description 3
- 238000004770 highest occupied molecular orbital Methods 0.000 abstract description 3
- 229920001577 copolymer Polymers 0.000 abstract 2
- 210000004027 cell Anatomy 0.000 description 45
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 24
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 description 14
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 12
- 239000000843 powder Substances 0.000 description 12
- 238000000605 extraction Methods 0.000 description 11
- 229910052786 argon Inorganic materials 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000012295 chemical reaction liquid Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 229930182558 Sterol Natural products 0.000 description 4
- 150000003432 sterols Chemical class 0.000 description 4
- 235000003702 sterols Nutrition 0.000 description 4
- MCEWYIDBDVPMES-UHFFFAOYSA-N [60]pcbm Chemical compound C123C(C4=C5C6=C7C8=C9C%10=C%11C%12=C%13C%14=C%15C%16=C%17C%18=C(C=%19C=%20C%18=C%18C%16=C%13C%13=C%11C9=C9C7=C(C=%20C9=C%13%18)C(C7=%19)=C96)C6=C%11C%17=C%15C%13=C%15C%14=C%12C%12=C%10C%10=C85)=C9C7=C6C2=C%11C%13=C2C%15=C%12C%10=C4C23C1(CCCC(=O)OC)C1=CC=CC=C1 MCEWYIDBDVPMES-UHFFFAOYSA-N 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 125000006608 n-octyloxy group Chemical group 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 238000000862 absorption spectrum Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229920000547 conjugated polymer Polymers 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 239000003574 free electron Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 125000000879 imine group Chemical group 0.000 description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- RPGWZZNNEUHDAQ-UHFFFAOYSA-N phenylphosphine Chemical compound PC1=CC=CC=C1 RPGWZZNNEUHDAQ-UHFFFAOYSA-N 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- CRUIOQJBPNKOJG-UHFFFAOYSA-N thieno[3,2-e][1]benzothiole Chemical compound C1=C2SC=CC2=C2C=CSC2=C1 CRUIOQJBPNKOJG-UHFFFAOYSA-N 0.000 description 2
- GKWLILHTTGWKLQ-UHFFFAOYSA-N 2,3-dihydrothieno[3,4-b][1,4]dioxine Chemical compound O1CCOC2=CSC=C21 GKWLILHTTGWKLQ-UHFFFAOYSA-N 0.000 description 1
- WYEWCMMFQWQDMP-UHFFFAOYSA-N 4,7-bis(5-bromothiophen-2-yl)-2-decyl-5,6-difluorobenzotriazole Chemical compound FC=1C(F)=C(C=2SC(Br)=CC=2)C2=NN(CCCCCCCCCC)N=C2C=1C1=CC=C(Br)S1 WYEWCMMFQWQDMP-UHFFFAOYSA-N 0.000 description 1
- YREZIXGSZIMSOA-UHFFFAOYSA-N 4,7-bis(5-bromothiophen-2-yl)-5,6-difluoro-2-icosylbenzotriazole Chemical compound FC=1C(F)=C(C=2SC(Br)=CC=2)C2=NN(CCCCCCCCCCCCCCCCCCCC)N=C2C=1C1=CC=C(Br)S1 YREZIXGSZIMSOA-UHFFFAOYSA-N 0.000 description 1
- OKASHQCJMHRYAN-UHFFFAOYSA-N 4,7-bis(5-bromothiophen-2-yl)-5,6-difluoro-2-tetradecylbenzotriazole Chemical compound FC=1C(F)=C(C=2SC(Br)=CC=2)C2=NN(CCCCCCCCCCCCCC)N=C2C=1C1=CC=C(Br)S1 OKASHQCJMHRYAN-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920000144 PEDOT:PSS Polymers 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- GGFKOVMZDAWYEX-UHFFFAOYSA-N dicyclohexyl-(1,3-dimethoxy-2-phenylcyclohexa-2,4-dien-1-yl)phosphane Chemical group C1CCCCC1P(C1CCCCC1)C1(OC)CC=CC(OC)=C1C1=CC=CC=C1 GGFKOVMZDAWYEX-UHFFFAOYSA-N 0.000 description 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N dimethylformamide Substances CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- NLVXSWCKKBEXTG-UHFFFAOYSA-N vinylsulfonic acid Chemical compound OS(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-N 0.000 description 1
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- C08G61/12—Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule
- C08G61/122—Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule derived from five- or six-membered heterocyclic compounds, other than imides
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- C08G2261/322—Monomer units or repeat units incorporating structural elements in the main chain incorporating heteroaromatic structural elements in the main chain non-condensed
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- 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 invention relates to the field of solar cell materials, in particular to a difluorobenzotriazole-based solar cell polymer material, a preparation method and application thereof. Background technique
- One object of the present invention is to provide a difluorobenzotriazole-based solar cell polymer material having high energy conversion efficiency.
- R 2 is d ⁇ C 2 .
- the alkyl group, n is an integer of 10 to 100, and n is preferably 50 to 70.
- Another object of the present invention is to provide a method for preparing the above-mentioned difluorobenzotriazole-based solar material, comprising the following steps:
- the compound A and the compound B are added in a molar ratio of 1:1, added to an organic solvent containing a catalyst, and subjected to Stille coupling reaction at 70 to 120 °C.
- n is an integer from 10 to 100.
- the preparation method of the above difluorobenzotriazole-based solar cell polymeric material further comprises the following steps:
- step S2 In the above preparation method of the difluorobenzotriazole-based solar cell polymeric material, in the step S2:
- the catalyst is an organic palladium or a mixture of an organic palladium and an organic brick ligand; the molar ratio of the organic palladium to the compound A is 1:20 to 1:100; wherein the organic palladium is selected from the group consisting of At least one of phenylphosphine palladium dichloride, tetrakistriphenylphosphine palladium, and tridibenzylideneacetone dipalladium; the organic brick ligand is tri-tert-butylphosphine;
- the organic solvent is selected from at least one of toluene, fluorene, fluorenyl-dimercaptoamide and tetrahydrofuran.
- step S2 the organic solvent is selected from at least one of toluene, fluorene, fluorenyl-dimercaptoamide and tetrahydrofuran.
- the Stille coupling reaction temperature is 90 to 110 ° C; and the Stille coupling reaction time is 12 to 48 h. It is still another object of the present invention to provide an application of the above-mentioned difluorobenzotriazole-based solar cell polymer material in an organic solar cell.
- the difluorobenzotriazole-based solar cell polymeric material provided by the present invention since the 1,2,3-benzotriazole polymer contains two fluorine atoms, its HOMO energy level will be lowered by 0.1 leV, and the fluorine substituted 1 , 2, 3-benzotriazole has two strong electron-withdrawing imine groups, and fluorine-substituted 1,2,3-benzotriazole is a heterocyclic compound with strong electron-withdrawing properties, and benzotriene
- the N bond of the NH bond of the azole easily introduces an alkyl chain, and the alkyl chain functional group can improve the energy conversion efficiency of the solar energy, thereby solving the problem of low efficiency of the polymer solar cell, and at the same time, the alkyl chain functional group can also It serves to adjust the solubility of the polymeric material of the difluorobenzotriazole-based solar cell, making the polymer advantageous for film-forming processing and expanding their application in the field of polymer solar cells.
- FIG. 1 is a flow chart showing the preparation process of a polymeric material of a difluorobenzotriazole-based solar cell of the present invention
- 3 is a schematic structural view of an organic solar cell. detailed description
- R 2 is d ⁇ C 2 .
- the alkyl group, n is an integer of 10 to 100, and n is preferably 50 to 70.
- the preparation method of the above-mentioned difluorobenzotriazole-based solar cell polymer material, as shown in FIG. 1, includes the following steps:
- R 2 is an alkyl group of d to C 20 ;
- the compound A and the compound B are added in a molar ratio of 1:1, and the catalyst is added.
- the Stille coupling reaction is carried out at 70 to 120 ° C (preferably 90 to 110 ° C) for 6 to 60 hours (preferably 12 to 48 hours), a reaction liquid is obtained, and the reaction liquid contains the product.
- the difluorobenzotriazole-based solar cell polymeric material having the following structural formula (I):
- n is an integer from 10 to 100, preferably n is from 50 to 70;
- step S3 purifying the product in step S2:
- the hydration alcohol was added to the reaction liquid of the step S2, followed by precipitation treatment, followed by filtration with a Soxhlet extractor, followed by extraction with decyl alcohol and n-hexane for 24 h; then, the chloroform was used as a solvent to extract the precipitate to be colorless.
- the chloroform solution was collected and dried to obtain a red powder, and the red powder was dried under vacuum at 50 ° C for 24 h to obtain a purified difluorobenzotriazole-based solar cell polymer material:
- step S2 In the above preparation method of the difluorobenzotriazole-based solar cell polymeric material, in the step S2:
- the catalyst is an organic palladium or a mixture of an organic palladium and an organic brick ligand; the molar ratio of the organic palladium to the compound A is 1:20 to 1:100; wherein the organic palladium is selected from the group consisting of At least one of phenylphosphine palladium dichloride, tetrakistriphenylphosphine palladium, and tridibenzylideneacetone dipalladium; the organic brick ligand is tri-tert-butylphosphine; organic palladium and organobrick ligand In the mixture, the organic palladium and the organic brick ligand are 1:3 ⁇ 1:6.
- the organic solvent is selected from at least one of toluene, fluorene, fluorenyl-dimercaptoamide and tetrahydrofuran.
- step S2 the organic solvent is selected from at least one of toluene, fluorene, fluorenyl-dimercaptoamide and tetrahydrofuran.
- the Stille coupling reaction temperature is 90-110 ° C; the Stille coupling reaction time is 12-48 h.
- the difluorobenzotriazole-based solar cell polymeric material provided by the present invention since the 1,2,3-benzotriazole polymer contains two fluorine atoms, its HOMO energy level will be lowered by 0.1 leV, and the fluorine substituted 1 , 2, 3-benzotriazole has two strong electron-withdrawing imine groups, and fluorine-substituted 1,2,3-benzotriazole is a heterocyclic compound having strong electron-withdrawing properties, and the N bond of the NH bond of benzotriazole is easily introduced into an alkyl chain, and the alkyl chain functional group can improve the energy conversion efficiency of solar energy, thereby solving the polymer solar cell Low efficiency problems, at the same time, the alkyl chain functional groups can also play a role in regulating the solubility of polymeric materials in difluorobenzotriazole-based solar cells, making the poly
- the preparation method of the invention adopts a simpler synthesis route, thereby reducing the process flow, the material is cheap and easy to obtain, and the manufacturing cost is reduced.
- the above difluorobenzotriazole-based solar cell polymeric material can be used in the active layer of an organic solar cell.
- the technical examples of the present invention are further illustrated by specific examples and illustrations, including material preparation and device preparation, but these examples do not limit the present invention, wherein Monomers can be prepared by reference (J. Am. Chem. Soc. 2009, 131, 56) or commercially available, and monomers of Compound B can be referred to the literature (J. Am. Chem. Soc. 2011, 133, 4625). ) Prepared or purchased from the market.
- the polymer material of the difluorobenzotriazole-based solar cell of the present embodiment that is, poly ⁇ 4,8-di(n-octyloxy)-benzodithiophene-CO-2-n-octyl-4,7-di Thienyl-5,6-difluorobenzotriazole ⁇ , wherein, is a n-octyl group, R 2 is a n-octyl group, and n is 50, and its structural formula is as follows:
- 2,6-Ditridecyltin-4,8-di(n-octyloxy)-benzodithiophene (231 mg, 0.3 mmol), 2-n-octyl-4,7-di(5-bromo) Thienyl)-5,6-difluoro-1,2,3-benzotriazole (176 8 mg, 0.3 mmol), tri-dibenzylideneacetone dipalladium (13.75 mg, 0.015 mmol) and tri-tert-butyl Phosphine (ie 2-dicyclohexylphosphino-2,6-dimethoxybiphenyl), (2 mg) was added to a flask containing 12 mL of hydrazine, dissolved in a solution, and the flask was purged with nitrogen. After about 30 minutes, the mixture was stirred at 600 ° and Stille coupled for 24 h. After cooling, the polymerization was stopped to obtain a reaction solution
- the polymer material of the difluorobenzotriazole-based solar cell of the present embodiment that is, poly ⁇ 4,8-dimethoxyoxybenzodithiophene-CO-2-n-cetylar-4,7-dithienyl -5,6-difluorobenzotriazole ⁇ , wherein As a fluorenyl group, R 2 is a twenty-six base and n is 70. Its structural formula is as follows:
- Example 2 is a poly ⁇ 4,8-dioxaoxybenzodithiophene-CO-2-n-tetrasyl-4,7-dithienyl-5,6-difluorobenzotriene prepared in Example 2.
- UV-visible absorption spectrum of azole ⁇ It can be seen from Fig. 2 that the conjugated polymer has a strong absorption peak at around 578 nm.
- Example 3
- the polymer material of the difluorobenzotriazole-based solar cell of the present embodiment that is, poly ⁇ 4,8-di(n-octadecyloxy)benzodithiophene-CO-2-mercapto-4,7-di Thienyl-5,6-difluorobenzotriazole ⁇ , wherein, is a ruthenium, R 2 is a fluorenyl group, and n is 65, and its structural formula is as follows:
- 2,6-ditridecyltin-4,8-di(n-octadecyloxy)benzodithiophene 333 mg, 0.3 mmol
- 2-mercapto-4,7-di(5-bromo) Thienyl)-5,6-difluoro-1,2,3-benzotriazole 147.3 mg, 0.3 Ment
- Add a 50 mL size two-necked flask containing 15 mL of tetrahydrofuran dissolve into a solution, thoroughly pass a mixture of nitrogen and argon to the two vials, vent air for about 20 minutes, then add 17 mg of tetratriphenylphosphine Palladium was added thereto, and the mixture of nitrogen and argon gas was exhausted for about 10 minutes, and then stirred at 90 ° C and Stille coupled for 48 hours to obtain a reaction liquid.
- the polymer material of the difluorobenzotriazole-based solar cell of the present embodiment that is, poly ⁇ 4,8-di-n-butoxybenzodithiophene-CO-2-n-decylalkyl-4,7-dithienyl -5,6-difluorobenzotriazole ⁇ , wherein, is n-butyl, R 2 is n-decyl, n is 10, and its structural formula is as follows:
- reaction formula is as follows: 2,6-Ditridecyltin-4,8-di-n-butoxybenzodithiophene (123 mg, 0.2 mmol) and 2-n-decyl-4,7-di(5-bromothienyl) -5,6-Difluoro-1,2,3-benzotriazole (132 mg, 0.2 mmol) was added to a 15 ml hydrazine, hydrazine-dihydrazinamide flask, dissolved into a solution, and evacuated. The flask was deaerated and filled with argon.
- the polymer material of the difluorobenzotriazole-based solar cell of the present embodiment that is, poly ⁇ 4,8-di(n-fluorenyloxy)benzodithiophene-CO-2-n-tetradecyl-4,7 -dithienyl-5,6-difluorobenzotriazole ⁇ , wherein, is a n-decyl group, R 2 is a n-tetradecyl group, and n is 100, and its structural formula is as follows:
- 2,6-Ditridecyltin-4,8-di(n-decyloxy)benzodithiophene (248 mg, 0.3 mmol)
- the organic solar cell of the sixth embodiment which uses the poly ⁇ 4,8-dioxaoxybenzodithiophene-CO-2-n-cetylar-4,7-dithienyl group obtained in Example 2 5,6-Difluorobenzotriazole ⁇ (ie, DFBTZ-BDT2) is an electron donor material of the active layer.
- the organic solar cell includes a glass base layer 11, a transparent anode 12, an intermediate auxiliary layer 13, an active layer 14, and a cathode 15 which are sequentially laminated.
- the transparent anode 12 may be made of indium tin oxide (barrel called ITO), preferably indium tin oxide having a sheet resistance of 10-20 ⁇ / ⁇ ;
- the intermediate auxiliary layer 13 is made of poly 3,4-ethylenedioxythiophene and polyphenylene.
- Ethylene-sulfonic acid composite material (cylinder called PEDOT:PSS); active layer 14 includes electron donor material and electron acceptor material, electron donor material adopts the polymer prepared in Example 2 (ie DFBTZ-BDT2), electron accepting
- the bulk material may be [6,6] phenyl-C 61 -butyric acid decanoate (cylinder called PCBM);
- the cathode 15 may be an aluminum electrode or a bimetal electrode, such as Ca/Al or Ba/Al, etc., thickness thereof It is preferably 170 nm, 30 nm, 130 nm or 60 nm.
- the glass base layer 11 can be used as a bottom layer.
- ITO glass is selected, ultrasonically cleaned, treated with oxygen-Plasma, and an intermediate auxiliary layer 13 is coated on the ITO glass, and the polymer and electron acceptor prepared in Example 1 are further prepared.
- the material is applied to the intermediate auxiliary layer 13 by blending to form the active layer 14, and then the cathode 15 is deposited on the active layer 14 by a vacuum evaporation technique to obtain the above organic solar cell.
- the organic solar cell needs to be heated under a sealed condition of 110 degrees Celsius for 4 hours and then lowered to room temperature. After annealing, the device can effectively increase the order and regularity of the arrangement between the groups and molecular segments in the molecule, and improve the current carrying current.
- the transfer rate and efficiency of the sub-mobility increase the photoelectric conversion efficiency.
- the thickness of the cathode 15 A1 layer is 170 nm, respectively.
- the conduction hole type electroluminescent material can more fully utilize the light energy due to its spectral response range of 4 ⁇ , thereby obtaining higher photoelectric conversion efficiency and increasing the power generation capability of the organic solar cell.
- the organic material can also reduce the quality of the organic solar cell, and can be fabricated by techniques such as spin coating, which is convenient for mass production.
- Table 1 shows the photovoltaic properties of the organic solar cell of Example 6. (Note: PCE is the energy conversion efficiency, V. c is the open circuit voltage, J sc is the short circuit current, and FF is the fill factor.)
- Table 1 show that the energy conversion efficiency of the bulk heterojunction solar cell based on DFBTz-BDT2 as electron donor material is 5.4% under AM 1.5 and 100 mW/cm 2 illumination; among them, AM is the air quality refers to the sun.
- the optical path of the beam through the atmosphere expressed as the ratio of the optical path to the optical path through which the sun reaches the sea level at the zenith; the AM1.5 condition is the indexing and testing of the radiation specified by the solar cell for the ground.
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US14/234,375 US20140163193A1 (en) | 2011-09-23 | 2011-09-23 | Difluoro benzotriazolyl solar cell polymeric material and preparation method and use thereof |
JP2014531064A JP2014531493A (ja) | 2011-09-23 | 2011-09-23 | ジフルオロベンゾトリアゾリル太陽電池ポリマー材料、並びにその調製方法及び使用 |
EP11872782.5A EP2759556B1 (en) | 2011-09-23 | 2011-09-23 | Difluoro benzotriazolyl solar cell polymeric material and preparation method and use thereof |
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