CN102148331A - Solar cell with small organic molecule mixture heterojunction and preparation method of solar cell - Google Patents
Solar cell with small organic molecule mixture heterojunction and preparation method of solar cell Download PDFInfo
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- CN102148331A CN102148331A CN2010101114266A CN201010111426A CN102148331A CN 102148331 A CN102148331 A CN 102148331A CN 2010101114266 A CN2010101114266 A CN 2010101114266A CN 201010111426 A CN201010111426 A CN 201010111426A CN 102148331 A CN102148331 A CN 102148331A
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- 239000000203 mixture Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000010408 film Substances 0.000 claims description 57
- 239000000463 material Substances 0.000 claims description 56
- 238000000576 coating method Methods 0.000 claims description 34
- 239000011248 coating agent Substances 0.000 claims description 31
- 238000007738 vacuum evaporation Methods 0.000 claims description 27
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 23
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 18
- XMWRBQBLMFGWIX-UHFFFAOYSA-N C60 fullerene Chemical compound C12=C3C(C4=C56)=C7C8=C5C5=C9C%10=C6C6=C4C1=C1C4=C6C6=C%10C%10=C9C9=C%11C5=C8C5=C8C7=C3C3=C7C2=C1C1=C2C4=C6C4=C%10C6=C9C9=C%11C5=C5C8=C3C3=C7C1=C1C2=C4C6=C2C9=C5C3=C12 XMWRBQBLMFGWIX-UHFFFAOYSA-N 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- -1 porphyrin compound Chemical class 0.000 claims description 12
- 229910044991 metal oxide Inorganic materials 0.000 claims description 11
- 150000004706 metal oxides Chemical class 0.000 claims description 11
- 150000003384 small molecules Chemical class 0.000 claims description 11
- YMMGRPLNZPTZBS-UHFFFAOYSA-N 2,3-dihydrothieno[2,3-b][1,4]dioxine Chemical compound O1CCOC2=C1C=CS2 YMMGRPLNZPTZBS-UHFFFAOYSA-N 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 229920002120 photoresistant polymer Polymers 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 239000010931 gold Substances 0.000 claims description 9
- 150000004820 halides Chemical class 0.000 claims description 9
- 239000011787 zinc oxide Substances 0.000 claims description 9
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052737 gold Inorganic materials 0.000 claims description 8
- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical compound [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 claims description 8
- 150000002500 ions Chemical class 0.000 claims description 7
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 claims description 7
- 229920006254 polymer film Polymers 0.000 claims description 7
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 239000002041 carbon nanotube Substances 0.000 claims description 6
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 6
- 239000010452 phosphate Substances 0.000 claims description 6
- 238000003980 solgel method Methods 0.000 claims description 6
- 238000004528 spin coating Methods 0.000 claims description 6
- 239000010409 thin film Substances 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 5
- 239000003085 diluting agent Substances 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 5
- STTGYIUESPWXOW-UHFFFAOYSA-N 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline Chemical compound C=12C=CC3=C(C=4C=CC=CC=4)C=C(C)N=C3C2=NC(C)=CC=1C1=CC=CC=C1 STTGYIUESPWXOW-UHFFFAOYSA-N 0.000 claims description 4
- 239000002322 conducting polymer Substances 0.000 claims description 4
- 229920001940 conductive polymer Polymers 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 238000004544 sputter deposition Methods 0.000 claims description 4
- 229910016036 BaF 2 Inorganic materials 0.000 claims description 3
- ATLMFJTZZPOKLC-UHFFFAOYSA-N C70 fullerene Chemical compound C12=C(C3=C4C5=C67)C8=C9C%10=C%11C%12=C%13C(C%14=C%15C%16=%17)=C%18C%19=C%20C%21=C%22C%23=C%24C%21=C%21C(C=%25%26)=C%20C%18=C%12C%26=C%10C8=C4C=%25C%21=C5C%24=C6C(C4=C56)=C%23C5=C5C%22=C%19C%14=C5C=%17C6=C5C6=C4C7=C3C1=C6C1=C5C%16=C3C%15=C%13C%11=C4C9=C2C1=C34 ATLMFJTZZPOKLC-UHFFFAOYSA-N 0.000 claims description 3
- 229910004613 CdTe Inorganic materials 0.000 claims description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 3
- 229910019015 Mg-Ag Inorganic materials 0.000 claims description 3
- 229910006404 SnO 2 Inorganic materials 0.000 claims description 3
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 3
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- JYMITAMFTJDTAE-UHFFFAOYSA-N aluminum zinc oxygen(2-) Chemical compound [O-2].[Al+3].[Zn+2] JYMITAMFTJDTAE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052980 cadmium sulfide Inorganic materials 0.000 claims description 3
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000000975 dye Substances 0.000 claims description 3
- 239000012789 electroconductive film Substances 0.000 claims description 3
- 229910052949 galena Inorganic materials 0.000 claims description 3
- 229910001195 gallium oxide Inorganic materials 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 239000002086 nanomaterial Substances 0.000 claims description 3
- SLIUAWYAILUBJU-UHFFFAOYSA-N pentacene Chemical compound C1=CC=CC2=CC3=CC4=CC5=CC=CC=C5C=C4C=C3C=C21 SLIUAWYAILUBJU-UHFFFAOYSA-N 0.000 claims description 3
- 238000001259 photo etching Methods 0.000 claims description 3
- 239000001007 phthalocyanine dye Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 3
- 239000005368 silicate glass Substances 0.000 claims description 3
- 239000005361 soda-lime glass Substances 0.000 claims description 3
- VACCAVUAMIDAGB-UHFFFAOYSA-N sulfamethizole Chemical compound S1C(C)=NN=C1NS(=O)(=O)C1=CC=C(N)C=C1 VACCAVUAMIDAGB-UHFFFAOYSA-N 0.000 claims description 3
- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 claims description 3
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 claims description 3
- 150000002222 fluorine compounds Chemical group 0.000 claims description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 238000001228 spectrum Methods 0.000 abstract description 7
- 230000007704 transition Effects 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 abstract description 3
- 238000002310 reflectometry Methods 0.000 abstract 2
- 238000010494 dissociation reaction Methods 0.000 abstract 1
- 230000005593 dissociations Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 109
- 229910003472 fullerene Inorganic materials 0.000 description 14
- 238000010521 absorption reaction Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 239000011368 organic material Substances 0.000 description 4
- AGBXYHCHUYARJY-UHFFFAOYSA-N 2-phenylethenesulfonic acid Chemical class OS(=O)(=O)C=CC1=CC=CC=C1 AGBXYHCHUYARJY-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- VVOPUZNLRVJDJQ-UHFFFAOYSA-N phthalocyanine copper Chemical compound [Cu].C12=CC=CC=C2C(N=C2NC(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2N1 VVOPUZNLRVJDJQ-UHFFFAOYSA-N 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- CLYVDMAATCIVBF-UHFFFAOYSA-N pigment red 224 Chemical compound C=12C3=CC=C(C(OC4=O)=O)C2=C4C=CC=1C1=CC=C2C(=O)OC(=O)C4=CC=C3C1=C42 CLYVDMAATCIVBF-UHFFFAOYSA-N 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 229920000144 PEDOT:PSS Polymers 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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Classifications
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The invention relates to a solar cell with a small organic molecule mixture heterojunction, which comprises a transparent insulating layer, wherein a transparent electrode layer, a first buffer layer, a first photosensitive layer, a second photosensitive layer, a third photosensitive layer, a second buffer layer and a high-reflectivity electrode layer are sequentially laminated at one side of the transparent insulating layer; and a lower transition layer is formed at the other side of the transparent insulating layer. The mixture heterojunction and the lower transition layer are combined together, so that the solar spectrum utilization ratio of the organic solar cell and exciton dissociation efficiency can be improved; meanwhile, the high-reflectivity electrode is reasonable utilized, the optical field distribution in the device can be adjusted, therefore, the solar cell can work at an optimum state. The invention also relates to a preparation method of the solar cell.
Description
Technical field
The present invention relates to the electrooptical device field, relate more specifically to a kind of novel organic molecule solar cell and preparation method thereof.
Background technology
Along with petering out of non-renewable energy resources, people become more and more urgent for the requirement of the development and utilization of novel renewable green energy resource.Wherein solar cell relies on it pollution-free, and plurality of advantages such as source mode is considered to the green energy resource that application prospect and using value are arranged most of 21st century reply energy crisis easily.In recent years, the solar photovoltaic industry has become one of the hottest link in the economy of countries in the world.Solar cell along with the rise of industrial investment climax, has also welcome the spring of its development as the nucleus module of photovoltaic system.Comparatively ripe at present silica-based solar cell is in leading position in photovoltaic industry.But in the past few years, the spot price of international polysilicon rapidly increases, once from 2005 35 dollars/kilogram soaring to 480 dollars/kilogram in 2008, its cost of electricity-generating has surpassed the cost of oil, so silica-based solar cell does not also have large-scale promotion at present.Therefore, real photovoltaic cell cheaply is only one of effective way that solves the global energy problem.
Organic solar batteries then is considered to low-cost solar battery of new generation.On the one hand, its organic material reserves are abundant, and are cheap; On the other hand, compare with silicon materials, rich and varied organic material provides for the preparation of solar cell and is close to inexhaustible selection space.Organic solar batteries is since the fifties development in last century, so far over and done with half a century.Since after C.W.Tang in 1985 introduces electron donor-electron acceptor heterostructure in the organic solar batteries for the first time, make its energy conversion efficiency bring up to 1%, people have just really recognized the great potential of organic material as solar cell.Two during the last ten years, and solid-state organic solar batteries has also been obtained significant progress, but can't satisfy the requirement of heavy industrialization at present.Therefore, the great problem in science that faces at present of organic molecule solar cell remains its energy conversion efficiency problem.
The introducing of organic donor-receiver heterojunction structure has promoted the energy conversion efficiency of organic solar batteries greatly, becomes the core texture in the organic solar batteries device.But the photoproduction exciton only could produce free carrier after being diffused into this interface, yet the diffusion length of exciton in organic material limited (approximately 10nm), so improved bulk heterojunction structure on the basis of organic donor-receiver heterojunction structure, promptly donor material and acceptor material are carried out blending on the basis that is separated, can solve the short problem of exciton diffusion length effectively.
Yet for the organic molecule solar cell, a key factor that influences its energy conversion efficiency is that organic small molecule material is low to the utilance of solar spectrum.The organic molecule solar cell mainly concentrates on visible light wave range (380nm～780nm), for example endohedral fullerene C to the absorption of sunlight
60Main absorption bands is at 350nm～500nm, and the absorption bands of CuPc CuPc is mainly at 550nm～700nm.So the photon of sunlight very most of wave band after arriving ground can't be absorbed and produce photoelectric current output by battery.The photon of its middle ultraviolet band has contained lot of energy, and the loss of this part energy is a greater loss of organic solar batteries efficient.Simultaneously, if the energy of ultraviolet photon can not be converted into photoelectric current output, can for example produce adverse effects such as thermal effect to organic solar batteries.
Summary of the invention
The technical problem to be solved in the present invention is to provide converted photons control technique under a kind of utilization, reasonably absorb the ultraviolet photon energy, simultaneously in conjunction with the mixture heterojunction structure, widen the zone that exciton splits, improve the organic molecule mixture heterojunction solar battery of exciton utilance, solved present solar energy problems such as the utilance of solar spectrum are low.
Solving the technical scheme that technical problem of the present invention adopts is: a kind of solar cell with organic molecule mixture heterojunction is provided, it comprises transparent insulating layer, stack gradually transparent electrode layer, first resilient coating, first photosensitive layer, second photosensitive layer, the 3rd photosensitive layer, second resilient coating and high reflectance electrode layer in described transparent insulating layer one side, and form conversion layer down at described transparent insulating layer opposite side.
In solar cell of the present invention, described first photosensitive layer and the 3rd photosensitive layer one of them adopt electron donor material and another to adopt electron acceptor material, and described second photosensitive layer is the bulk heterojunction that electron donor material and electron acceptor material mix.
In solar cell of the present invention, described electron donor material is a kind of in phthalocyanine dye, pentacene, porphyrin compound or the cyanine dyes.
In solar cell of the present invention, described electron acceptor material is 3,4,9, and the 10-perylene tetracid dianhydride (abbreviates as: PTCDA), fullerene C
60, fullerene C
70, Pe and derivative thereof, inorganic nano material, CdSe, CdS, CdTe, TiO
2, ZnO, PbS, SnO
2, a kind of in carbon nano-tube or the Graphene.
In solar cell of the present invention, described down conversion layer be selected from singly mix or halide, oxide, borate, silicate, phosphate or the vanadate of double rare-earth-mixed ion in one or more.
In solar cell of the present invention, described halide is fluoride, and described fluoride is YF
3, LiGdF
4, KYF
4, LiYF
4, K
2GdF
5Perhaps BaF
2In a kind of.
In solar cell of the present invention, described oxide is selected from a kind of in rare earth oxide, zinc oxide, zirconia or the composite oxides; Described borate is GdBO
3Perhaps GdAl
3(BO
3)
4Described vanadate is LaVO
4Described singly mix or two rare earth ion of mixing is selected from Er
3+, Tb
3+, Eu
3+, Pr
3+, Tm
3+, Gd
3+, Nd
3+, Tb
3+/ Yb
3, Pr
3+/ Yb
3+, Gd
+ 3/ Eu
3+, Tm
3+/ Yb
3+In a kind of.
In solar cell of the present invention, described high reflectance electrode layer is metal film electrode or metal oxide high reflectance electrode.
In solar cell of the present invention, described metallic film is Au, Ag, Al, Ca-Al or Mg-Ag, and described metal oxide is ITO or ZnO.
In solar cell of the present invention, described first resilient coating and second resilient coating are poly-(3, the 4-Ethylenedioxy Thiophene)-poly-(styrene sulfonic acid) conducting polymer film or 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline, Alq
3, CuPc, LiF small molecule material.
In solar cell of the present invention, described transparent electrode layer is a kind of in indium tin oxide transparent electrode, zinc oxide aluminum transparent electrode, zinc-gallium oxide transparency electrode, indium zinc oxide transparency electrode, gold thin film, aluminium film, silver-colored film or the carbon nanotube conductive thin film.
In solar cell of the present invention, described transparent insulating layer is a kind of in quartz glass, silicate glass, vagcor, soda-lime glass, polyvinyl chloride, Merlon or the polyester.
In addition, the present invention also provides a kind of method for preparing above-mentioned solar cell, and it comprises the steps:
Step 1: at transparent insulating layer plating layer of metal oxide electroconductive film;
Step 2: adopt photoresist and photoresist diluent that the metal conductive oxide film is carried out gluing, its photoetching corrosion is become transparent electrode layer;
Step 3: on described transparent electrode layer, adopt the method spin on polymers film of sol-gel or adopt evaporation coating method growth small molecule material to form first resilient coating;
Step 4: adopt vacuum evaporation on first resilient coating, to form first photosensitive layer;
Step 5: adopt vacuum evaporation on first photosensitive layer, to form second photosensitive layer;
Step 6: adopt vacuum evaporation on second photosensitive layer, to form the 3rd photosensitive layer;
Step 7: vacuum evaporation small molecule material or employing spin-coating method prepare thin polymer film as second resilient coating on the 3rd photosensitive layer.
Step 8: vacuum evaporation metallic film stripe electrode or prepare the metal-oxide film electrode as the high reflectance electrode layer on second resilient coating with sputtering method.
Step 9: the opposite side of described transparent insulating layer adopt sol-gel process to prepare that one deck list is mixed or the film of halide, oxide, borate, silicate, phosphate, vanadate or its composition of double rare-earth-mixed ion as under conversion layer,, can obtain described solar cell with organic molecule mixture heterojunction.
In preparation method of the present invention, the volume ratio of described photoresist and photoresist diluent is 1: 1.
In preparation method of the present invention, described first photosensitive layer and the 3rd photosensitive layer one of them adopt electron donor material and another to adopt electron acceptor material.
In preparation method of the present invention, second photosensitive layer in the step 5 is electron donor material and electron acceptor material mixing and has the bulk heterojunction that is separated.
In preparation method of the present invention, described thin polymer film is poly-(3, the 4-Ethylenedioxy Thiophene)-poly-(styrene sulfonic acid), and described small molecule material is 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline, Alq
3, a kind of among CuPc or the LiF.
Compared with prior art, mixture heterojunction of the present invention is the free carrier that the photoproduction exciton splits into electronics and hole in the solar cell, and the main region of output photoelectric current, in the mixture heterojunction structure, the interfacial area that splits for exciton increases greatly, be separated preferably simultaneously carrier transport passage efficiently is provided, improved the utilance of photoproduction exciton; In addition, conversion layer down of the present invention can be with high-octane purplish red outer photon by the intermediate sub stable state in the material, following transfer process, being converted to can be by the visible light wave range photon of organic molecule solar cell efficient absorption, quantum efficiency in its part process will surpass 100%, promptly correspondingly absorb a photon and produce the process of a plurality of photo-generated carriers, thereby improve the energy conversion efficiency of organic molecule solar cell.The present invention is based on organic molecule mixed heterojunction structure, utilize " spectrum regulation and control " function of transition material down, can not be converted to more low-energy visible light wave range photon by the intermediate sub stable state in the material by the high-energy ultraviolet band photon that battery rationally absorbs, and utilized by the organic solar batteries efficient absorption, improved the light utilization efficiency of battery.
And, mixed heterojunction structure and following transformational structure are combined, the solar spectrum utilance and the exciton that can improve organic solar batteries split efficient.Simultaneously, the high reflectance electrode rationally utilizes, and can adjust the optical field distribution in the device, thereby make solar cell working in its optimum state.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 has the structural representation of the solar cell of organic molecule mixture heterojunction for the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As shown in Figure 1, the invention provides a kind of solar cell with organic molecule mixture heterojunction, it comprises transparent insulating layer 1, stack gradually transparent electrode layer 2, first resilient coating 3, first photosensitive layer 4, second photosensitive layer 5, the 3rd photosensitive layer 6, second resilient coating 7 and high reflectance electrode layer 8 in described transparent insulating layer 1 one sides, and form conversion layer 9 down at described transparent insulating layer 1 opposite side.
Described transparent insulating layer 1 is a kind of in the transparent glass layers such as quartz glass, silicate glass, vagcor, soda-lime glass, perhaps, a kind of for in polyvinyl chloride (PVC), Merlon (PC), the polyester transparent insulation plastic layers such as (PET) of described transparent insulating layer 1.
Described transparent electrode layer 2 is a kind of in tin indium oxide (ITO), zinc oxide aluminum (AZO), zinc-gallium oxide (GZO), the indium zinc oxide oxide transparent electrodes such as (IZO), perhaps is metal film electrode such as gold (Au) film, aluminium (Al) film, silver (Ag) film or carbon nanotube conductive thin film etc.Described transparent electrode layer 2 can be used as the anode or the negative electrode of battery.
The main effect of described first resilient coating 3 is the infiltrations of modifying interface between the transparent electrode layer 2 and first photosensitive layer 4, improving interface charge transmission, prevention water and oxygen, also has part to stop the effect of exciton simultaneously.Described first resilient coating 3 is poly-(3, the 4-Ethylenedioxy Thiophene)-poly-(styrene sulfonic acid) conducting polymer films or 2 such as (abbreviating PEDOT:PSS as), 9-dimethyl-4,7-diphenyl-1,10-phenanthroline (abbreviating BCP as), Alq
3, small molecule materials such as CuPc, LiF.
Described first photosensitive layer 4, second photosensitive layer 5 and the 3rd photosensitive layer 6 common mixture heterojunction of forming, this mixture heterojunction is that whole solar cell absorbs the main region that sunlight produces photoelectric current, photovoltage.Wherein in first photosensitive layer 4 and the 3rd photosensitive layer 6 arbitrary layer adopt electron donor material, then another layer then adopts electron acceptor material.This electron donor material is a kind of in phthalocyanine dye (CuPc, ZnPc etc.), pentacene, porphyrin compound or the cyanine dyes etc.; This electron acceptor material is 3,4,9,10-perylene tetracid dianhydride (abbreviating PTCDA as), fullerene C
60, fullerene C
70, Pe and derivative thereof, inorganic nano material, CdSe, CdS, CdTe, TiO
2, ZnO, PbS, SnO
2, a kind of in carbon nano-tube or Graphene etc.Second photosensitive layer 5 that inserts between first photosensitive layer 4 and the 3rd photosensitive layer 6 is the bulk heterojunction that electron donor material and electron acceptor material mix with certain proportion (mass ratio 1: 0.1～1: 10).This bulk heterojunction structure is compared with traditional single heterojunction, the area at its donor-receiver interface has increased greatly, make more photoproduction exciton can be spread to the donor-receiver interface and split and obtain free carrier, thereby improved the photoelectric conversion efficiency of solar cell.
Described second resilient coating 7 is similar to described first resilient coating, mainly plays the effect of modifying interface between high emissivity electrode 8 and the 3rd photosensitive layer 6, makes its interface more smooth, and the electric charge that improves the interface simultaneously injects and output; Described second resilient coating 7 is poly-(3, the 4-Ethylenedioxy Thiophene)-poly-conducting polymer film or BCP, Alq such as (styrene sulfonic acids)
3, small molecule materials such as CuPc, LiF.
Described high reflectance electrode 8 is metallic film (as Au, Ag, Al, Ca-Al, Mg-Ag etc.) electrode or metal oxide (ITO, a ZnO) high reflectance electrode, and it can be used as the negative electrode or the anode of battery.
Described down conversion layer 9 is for singly mixing or halide, oxide, borate, silicate, phosphate, vanadate or their composition of double rare-earth-mixed ion.Wherein, halide is preferably fluoride, and oxide can be rare earth oxide, zinc oxide, zirconia or composite oxides.Particularly, the material of this time conversion layer for example can be but be not limited to singly mix or the YF of double rare-earth-mixed ion
3, LiGdF
4, KYF
4, LiYF
4, K
2GdF
5, BaF
2, LaVO
4, GdBO
3, GdAl
3(BO
3)
4Singly mix or two rare earth ion of mixing can comprise Er
3+, Tb
3+, Eu
3+, Pr
3+, Tm
3+, Gd
3+, Nd
3+, Tb
3+/ Yb
3, Pr
3+/ Yb
3+, Gd
+ 3/ Eu
3+, Tm
3+/ Yb
3+
In addition, the present invention also provides a kind of above-mentioned method with solar cell of organic molecule mixture heterojunction for preparing, and it comprises the steps:
Step 1: with quartz glass or other transparent insulation materials as the transparent insulating layer among Fig. 11, and at one side sputter layer of metal oxide electroconductive film;
Step 2: adopt photoresist and photoresist diluent (volume ratio is 1: 1) that the metal conductive oxide film is carried out gluing, and through operations such as preceding baking, exposure and developments, become needed stripe electrode pattern as transparent electrode layer 2 its photoetching corrosion, it can be used as anode, also can be used as negative electrode;
Step 3: on transparent electrode layer 2, adopt sol-gel process spin coating poly-(3, the 4-Ethylenedioxy Thiophene)-poly-thin polymer films such as (styrene sulfonic acids) or adopt evaporation coating method growth BCP, Alq
3, small molecule materials such as CuPc, LiF are as first resilient coating;
Step 4: adopt vacuum evaporation on first resilient coating 3, to grow electron donor or electron acceptor material as first photosensitive layer 4;
Step 5: adopt vacuum evaporation to mix with certain proportion (mass ratio 1: 0.1～1: 10) and have the bulk heterojunction that better is separated as second photosensitive layer 5 by on first photosensitive layer 4, grow electron donor material and electron acceptor material of the mode of blending;
Step 6: adopt vacuum evaporation on second photosensitive layer 5, to grow electron acceptor material or electron donor material as the 3rd photosensitive layer 6;
Step 7: vacuum evaporation Alq on the 3rd photosensitive layer 6
3, small molecule material such as BCP, CuPc or LiF or adopt spin-coating method preparation poly-(3, the 4-Ethylenedioxy Thiophene)-poly-thin polymer films such as (styrene sulfonic acids) as second resilient coating 7;
Step 8: vacuum evaporation metallic film stripe electrode or prepare the metal-oxide film electrode as high reflectance electrode layer 8 on second resilient coating 7 with sputtering method;
Step 9: a uncoated side (opposite side) on this transparent insulating layer 1, adopt sol-gel process to prepare that one deck list is mixed or the halide of double rare-earth-mixed ion, oxide, borate, silicate, phosphate, vanadate or their composition film as conversion layer 9 down,, can obtain described solar cell with organic molecule mixture heterojunction.
Below come illustrational different the composition and aspects such as its preparation method by a plurality of embodiment.
Embodiment 1
A kind of solar battery structure with organic molecule mixture heterojunction as shown in Figure 1, wherein, this transparent insulating layer 1 adopting quartz glass; Transparent electrode layer 2 adopts the ITO stripe electrode, and its square resistance is 15 ohm/; First resilient coating 3 adopts poly-(3, the 4-Ethylenedioxy Thiophene)-poly-(styrene sulfonic acid) thin polymer film; First photosensitive layer 4 adopts phthalocyanine copper film; Second photosensitive layer 5 adopts CuPc (CuPc) and fullerene C
60Mix and steam; The 3rd photosensitive layer 6 adopts fullerene C
60Film; Second resilient coating 7 adopts Alq
3Film; High reflectance electrode layer 8 adopts the aluminium membrane electrode; Following conversion layer 9 adopts Eu
3+The LiGdF that mixes
4Function film.
Its concrete preparation method is as follows:
(1) at first adopt sputtering method at the long one deck ITO of quartz glass one adnation conductive film, the thickness 1.1mm of quartz glass, ito thin film thickness are 100nm-120nm;
(2) the ITO conductive photolithographic film is lost into the anode of needed stripe electrode pattern as solar cell;
(3) entire I TO glass substrate passes through the scouring of absolute methanol, acetone, and cleans 1-1.5 hour in deionized water for ultrasonic, afterwards ito glass substrate is toasted 15 minutes in 150 ℃ high temperature furnace;
(4) method of employing sol-gel on ito transparent electrode, spin coating gathers (3, the 4-Ethylenedioxy Thiophene)-poly-(styrene sulfonic acid) film, spin coating rotating speed 5000rpm, its film thickness was 30-40nm, and sample is inserted in the baking oven, 80-90 ℃ of baking 20-30 minute;
(5) sample is taken out from baking oven, and send in the growth chamber of vacuum evaporation system, its vacuum degree is 10
-8-10
-7Torr adopts the mode of vacuum evaporation CuPc (CuPc) the electron donor layer of growing, and its thickness is 20-30nm, and growth rate is 0.01-0.05nm/s;
(6) on phthalocyanine copper film, according to 1: 0.5 mixed of mass ratio growth CuPc and fullerene C
60Mixed steamed layer, CuPc growth rate 0.01-0.05nm/s, fullerene C
60Growth rate 0.02-0.05nm/s, its mixed steamed layer thickness is 10-15nm, forms the mixed heterojunction of donor material and acceptor material;
(7) at CuPc: fullerene C
60Vacuum evaporation fullerene C on the film
60Electron acceptor layer, thickness are 30-40nm, and growth rate is 0.01-0.05nm/s;
(8) at fullerene C
60Vacuum evaporation 8-hydroxyquinoline aluminum (Alq on the film
3), thickness is 5-8nm, growth rate is 0.01-0.03nm/s;
(9) at Alq
3On the film, be aided with the negative electrode of striped mask plate vacuum evaporation 100-120nm thick aluminium stripe electrode as solar cell;
(10), adopt sol-gel process to prepare one deck Eu in the uncoated side of quartz glass
3+The LiGdF that mixes
4Film, thickness are 500-600nm, and last entire device is 110-120 degree centigrade of annealing 10-20 minute, get final product to such an extent that have a solar cell of organic molecule mixture heterojunction.
Embodiment 2
A kind of solar battery structure with organic molecule mixture heterojunction as shown in Figure 1, wherein, this transparent insulating layer 1 adopting quartz glass; Transparent electrode layer 2 adopts aluminum strip line electrode; First resilient coating 3 adopts Alq
3Film; First photosensitive layer 4 adopts fullerene C
60Film; Second photosensitive layer 5 adopts CuPc and fullerene C
60The blending film; The 3rd photosensitive layer 6 adopts phthalocyanine copper film; Second resilient coating 7 adopts the LiF film; High reflectance electrode layer 8 adopts gold film electrode; Following conversion layer 9 adopts Eu
3+The LiGdF that mixes
4Function film.
Its concrete preparation method is as follows:
(1) method that at first adopts vacuum evaporation is that quartz glass one side of 1.1mm is aided with stripe electrode mask plate evaporation layer of aluminum striped semitransparent electrode film at thickness, and its thickness is 8-10nm, and growth rate is 0.01nm/s, as the negative electrode of solar cell;
(2) evaporation is had the quartz glass substrate of aluminum strip line electrode send in the growth chamber of vacuum evaporation system, its vacuum degree is 10
-8-10
-7Torr adopts the mode of the vacuum evaporation 8-hydroxyquinoline aluminum of growing, and its thickness is 6-10nm, and growth rate is 0.02-0.04nm/s;
(3) on the 8-hydroxyquinoline aluminum film, vacuum evaporation fullerene C
60Electron acceptor layer, thickness are 35-45nm, and growth rate is 0.02-0.06nm/s;
(4) according to mass ratio be 1: 1 ratio blending growth CuPc and fullerene C
60Mixed steamed layer, CuPc growth rate 0.02-0.06nm/s, fullerene C
60Growth rate 0.02-0.06nm/s, its mixed steamed layer thickness is 10-15nm, forms the mixed heterojunction of giving body and acceptor material;
(5) at CuPc: fullerene C
60Vacuum evaporation CuPc electron donor layer on the film, thickness is 25-35nm, growth rate is 0.02-0.06nm/s;
(6) on the CuPc film, vacuum evaporation LiF anode buffer layer, thickness are 0.5nm, growth rate 0.01-0.02nm/s;
(7) on the LiF anode buffer layer, be aided with striped mask plate vacuum evaporation 40-60nm thickness gold bar line electrode, growth rate is 0.03nm/s, as the anode of solar cell;
(8), adopt sol-gel process to prepare one deck Eu in the uncoated side of quartz glass
3+The LiGdF that mixes
4Film, thickness are 550-650nm, and last entire device is 100-120 degree centigrade of annealing 15-20 minute, get final product to such an extent that have a solar cell of organic molecule mixture heterojunction.
In the solar cell of the present invention, sunlight is from conversion layer 9 one side incidents down, process is transfer process down, the ultraviolet portion high-energy photon is converted to the visible light wave range photon, see through transparent insulating layer 1 and transparent electrode layer 2, absorb and be converted to free carrier by the photosensitive layer mixture heterojunction of organic molecule solar cell, derive, form photoelectric current via carrier blocking layers; The part sunlight that battery is crossed in transmission experiences absorbing of photosensitive layer after via 8 reflections of high reflectance electrode layer once more, has increased the absorption of battery to solar energy.
Mixture heterojunction of the present invention is the free carrier that the photoproduction exciton splits into electronics and hole in the solar cell, and the main region of output photoelectric current, in the mixture heterojunction structure, the interfacial area that splits for exciton increases greatly, be separated preferably simultaneously carrier transport passage efficiently is provided, improved the utilance of photoproduction exciton; In addition, conversion layer down of the present invention can be with high-octane ultraviolet photon by the intermediate sub stable state in the material, following transfer process, being converted to can be by the visible light wave range photon of organic molecule solar cell efficient absorption, quantum efficiency in its part process will surpass 100%, promptly correspondingly absorb a photon and produce the process of a plurality of photo-generated carriers, thereby improve the energy conversion efficiency of organic molecule solar cell.The present invention is based on organic molecule mixed heterojunction structure, utilize " spectrum regulation and control " function of transition material down, can not be converted to more low-energy visible light wave range photon by the intermediate sub stable state in the material by the high-energy ultraviolet band photon that battery rationally absorbs, and utilized by the organic solar batteries efficient absorption, improved the light utilization efficiency of battery.Eu for example
3+The LiGdF that mixes
4Following switching film functional layer has strong absorption to the ultraviolet light of 273nm wavelength, is subjected to the Eu of ultraviolet excitation
3+The LiGdF that mixes
4The emission peak position of system has two, and one at the 554nm wave band, and one at the 614nm wave band, and the photon of these two wave bands can be absorbed by organic semiconducting materials in higher efficiency.The present invention has simultaneously also avoided the charge carrier thermal effect that can not be used appropriately and produce owing to the ultraviolet portion photon, thereby can promote the opto-electronic conversion performance of solar cell.
And, mixed heterojunction structure and following transformational structure are combined, the solar spectrum utilance and the exciton that can improve organic solar batteries split efficient.Simultaneously, the high reflectance electrode rationally utilizes, and can adjust the optical field distribution in the device, thereby make solar cell working in its optimum state.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (17)
1. solar cell with organic molecule mixture heterojunction, it comprises transparent insulating layer, it is characterized in that, stack gradually transparent electrode layer, first resilient coating, first photosensitive layer, second photosensitive layer, the 3rd photosensitive layer, second resilient coating and high reflectance electrode layer in described transparent insulating layer one side, and form conversion layer down at described transparent insulating layer opposite side.
2. the solar cell with organic molecule mixture heterojunction as claimed in claim 1, it is characterized in that: described first photosensitive layer and the 3rd photosensitive layer one of them adopt electron donor material and another to adopt electron acceptor material, and described second photosensitive layer is the bulk heterojunction that electron donor material and electron acceptor material mix.
3. the solar cell with organic molecule mixture heterojunction as claimed in claim 2 is characterized in that: described electron donor material is a kind of in phthalocyanine dye, pentacene, porphyrin compound or the cyanine dyes.
4. the solar cell with organic molecule mixture heterojunction as claimed in claim 2 is characterized in that: described electron acceptor material is 3,4,9,10-perylene tetracid dianhydride, fullerene C
60, fullerene C
70, Pe and derivative thereof, inorganic nano material, CdSe, CdS, CdTe, TiO
2, ZnO, PbS, SnO
2, a kind of in carbon nano-tube or the Graphene.
5. the solar cell with organic molecule mixture heterojunction as claimed in claim 1 is characterized in that: described down conversion layer be selected from singly mix or halide, oxide, borate, silicate, phosphate or the vanadate of double rare-earth-mixed ion in one or more.
6. the solar cell with organic molecule mixture heterojunction as claimed in claim 5 is characterized in that: described halide is fluoride, and described fluoride is YF
3, LiGdF
4, KYF
4, LiYF
4, K
2GdF
5Perhaps BaF
2In a kind of.
7. the solar cell with organic molecule mixture heterojunction as claimed in claim 5 is characterized in that: described oxide is selected from a kind of in rare earth oxide, zinc oxide, zirconia or the composite oxides; Described borate is GdBO
3Perhaps GdAl
3(BO
3)
4Described vanadate is LaVO
4Described singly mix or two rare earth ion of mixing is selected from Er
3+, Tb
3+, Eu
3+, pr
3+, Tm
3+, Gd
3+, Nd
3+, Tb
3+/ Yb
3, pr
3+/ Yb
3+, Gd
+ 3/ Eu
3+, Tm
3+/ Yb
3+In a kind of.
8. the solar cell with organic molecule mixture heterojunction as claimed in claim 1 is characterized in that: described high reflectance electrode layer is metal film electrode or metal oxide high reflectance electrode.
9. the solar cell with organic molecule mixture heterojunction as claimed in claim 1 is characterized in that: described metallic film is Au, Ag, Al, Ca-Al or Mg-Ag, and described metal oxide is ITO or ZnO.
10. the solar cell with organic molecule mixture heterojunction as claimed in claim 1, it is characterized in that: described first resilient coating and second resilient coating are poly-(3, the 4-Ethylenedioxy Thiophene)-poly-(styrene sulfonic acid) conducting polymer film or 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline, Alq
3, CuPc, LiF small molecule material.
11. the solar cell with organic molecule mixture heterojunction as claimed in claim 1 is characterized in that: described transparent electrode layer is a kind of in indium tin oxide transparent electrode, zinc oxide aluminum transparent electrode, zinc-gallium oxide transparency electrode, indium zinc oxide transparency electrode, gold thin film, aluminium film, silver-colored film or the carbon nanotube conductive thin film.
12. the solar cell with organic molecule mixture heterojunction as claimed in claim 1 is characterized in that: described transparent insulating layer is a kind of in quartz glass, silicate glass, vagcor, soda-lime glass, polyvinyl chloride, Merlon or the polyester.
13. the preparation method with solar cell of organic molecule mixture heterojunction, it comprises the steps:
Step 1: at transparent insulating layer plating layer of metal oxide electroconductive film;
Step 2: adopt photoresist and photoresist diluent that the metal conductive oxide film is carried out gluing, its photoetching corrosion is become transparent electrode layer;
Step 3: on described transparent electrode layer, adopt the method spin on polymers film of sol-gel or adopt evaporation coating method growth small molecule material to form first resilient coating;
Step 4: adopt vacuum evaporation on first resilient coating, to form first photosensitive layer;
Step 5: adopt vacuum evaporation on first photosensitive layer, to form second photosensitive layer;
Step 6: adopt vacuum evaporation on second photosensitive layer, to form the 3rd photosensitive layer;
Step 7: vacuum evaporation small molecule material or employing spin-coating method prepare thin polymer film as second resilient coating on the 3rd photosensitive layer.
Step 8: vacuum evaporation metallic film stripe electrode or prepare the metal-oxide film electrode as the high reflectance electrode layer on second resilient coating with sputtering method.
Step 9: the opposite side of described transparent insulating layer adopt sol-gel process to prepare that one deck list is mixed or the film of halide, oxide, borate, silicate, phosphate, vanadate or its composition of double rare-earth-mixed ion as under conversion layer, can obtain described solar cell with organic molecule mixture heterojunction.
14. preparation method as claimed in claim 13 is characterized in that: in step 2, the volume ratio of described photoresist and photoresist diluent is 1: 1.
15. preparation method as claimed in claim 13 is characterized in that: described first photosensitive layer and the 3rd photosensitive layer one of them adopt electron donor material and another to adopt electron acceptor material.
16. preparation method as claimed in claim 13 is characterized in that: in step 5, described second photosensitive layer is electron donor material and electron acceptor material mixing and has the bulk heterojunction that is separated.
17. preparation method as claimed in claim 13 is characterized in that: described thin polymer film is poly-(3, the 4-Ethylenedioxy Thiophene)-poly-(styrene sulfonic acid), and described small molecule material is 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline, Alq
3, a kind of among CuPc or the LiF.
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Application publication date: 20110810 |