CN109860392A - A kind of organic solar batteries and preparation method thereof using functionalization graphene quantum dot as electron transfer layer - Google Patents
A kind of organic solar batteries and preparation method thereof using functionalization graphene quantum dot as electron transfer layer Download PDFInfo
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Abstract
The invention discloses a kind of organic solar batteries using functionalization graphene quantum dot as electron transfer layer, the battery includes the cathode layer being superimposed with each other, electron transfer layer, photoactive layer, hole transmission layer, anode layer, it additionally include glass substrate, on a glass substrate, the electron transfer layer between cathode layer and photoactive layer is functionalization graphene quantum dot for cathode layer or anode layer preparation.The present invention carries out chemical modification processing to graphene quantum dot, adjust the work content of graphene quantum dot, to reduce the contact berrier between active layer and electrode, electrode is to photo-generated carrier collection efficiency in raising organic solar batteries, the electron transfer layer for making it suitable as organic solar batteries reduces its cost while significantly improving organic solar batteries photoelectric conversion efficiency.
Description
Technical field:
The present invention relates to a kind of using functionalization graphene quantum dot as the organic solar batteries of electron transfer layer and
Preparation method.
Background technique:
Now with the fast development of global economy, people are increasing to the demand of the energy, and the energy has become limit
The bottleneck of economic development processed.Traditional energy such as petroleum, coal mine, natural gas etc. increasingly reduce and its excessive use brought by
Problem of environmental pollution all forces people to look for developing and utilizing novel, reproducible, environmental-friendly green energy resource.?
Under this background, the novel green energy resource such as solar energy, wind energy, biological energy source, water energy, nuclear energy is widely paid close attention to by people.Wherein too
Sun can have the series of advantages such as reserves are huge, green is harmless, widely distributed and favor by people.Solar battery can incite somebody to action
Solar energy is converted directly into electric energy, is a kind of tool for effectively developing and utilizing solar energy.Current commercialized solar-electricity
Pond is mainly based upon the solar battery of monocrystalline silicon, polysilicon, however its relative complex preparation process, to the harshness of raw material
It is required that etc. factors limit the further development of silicon solar cell.Organic solar batteries are compared to current commercialized crystal silicon
Solar battery, have preparation process is simple, material source extensively, light weight, it is at low cost, one can be prepared etc. on flexible substrates
Number of advantages.
In body heterojunction organic solar energy cell structure, the donor material, acceptor material and electricity of active layer are typically comprised
Energy level between pole mismatches, and leads between electrode and active layer that there are contact berriers, influences the performance of device.By in activity
Middle layer is introduced between layer and electrode can effectively reduce the contact berrier of the two, improve the transmission of carrier and collect effect
Rate, to improve the performance of device.Currently, most common electron transfer layer is the semiconductor materials such as titanium oxide and zinc oxide, it should
Quasi-metal oxides need to prepare film by solution methods and carry out the high temperature anneal again, thus cause preparation cost height.For
The low cost preparation for realizing organic solar batteries is badly in need of finding a kind of Novel electric that the low cost based on solwution method can be achieved
Son transmission layer material.
Graphene quantum dot shows biological hypotoxicity, good water-soluble, chemistry as a kind of novel nano-material
The features such as inertia, good surface modification, stable luminescence generated by light, it is widely used in opto-electronic device, bio-imaging, sensing
The fields such as device, drug delivery and photocatalysis.
Summary of the invention:
The object of the present invention is to provide a kind of organic sun using functionalization graphene quantum dot as electron transfer layer
Energy battery and preparation method thereof.
The present invention is achieved by the following technical programs:
A kind of organic solar batteries using functionalization graphene quantum dot as electron transfer layer, the battery include according to
The secondary cathode layer being stacked, electron transfer layer, photoactive layer, hole transmission layer, anode layer additionally include glass substrate,
On a glass substrate, the electron transfer layer being arranged between cathode layer and photoactive layer is function fossil for cathode layer or anode layer setting
Black alkene quantum dot.
The functionalization graphene quantum dot is to carry out chemical modification processing to graphene quantum dot, adjusts graphene quantum
The work content of point improves electrode in organic solar batteries and carries to photoproduction to reduce the contact berrier between active layer and electrode
Sub- collection efficiency is flowed, the electron transfer layer of organic solar batteries is made it suitable as, is significantly improving organic solar batteries
It is reduced its cost while photoelectric conversion efficiency.
The functionalization graphene quantum dot is graphene quantum dot the preparation method is as follows: graphene quantum dot and ionic liquid
The mixing of one or both of body, polymer dielectric material is dried to obtain functionalization graphene quantum after 50-100 DEG C of reaction
Point, wherein the content of raw material intermediate ion liquid or polymer dielectric is 1-50wt%.
The ionic liquid is the ionic liquid material containing imidazoles, pyridines, quaternary ammonium salt or quaternary phosphine salt cation
One or more of.
The ionic liquid material of imidazoles cation is chlorination 1- allyl -3- methylimidazole, chlorination 1- benzyl -3- methyl
Imidazoles, 1- benzyl -3- methyl imidazolium tetrafluoroborate, iodate 1- propyl -3- methylimidazole salt, chlorination 1- octyl -3- methyl miaow
Azoles, 1- octyl -3- methylimidazole fluoroform sulphonate, chlorination 1- ethoxy -3- methylimidazole, 1- ethoxy -3- methylimidazole
Tetrafluoroborate, chlorination 1- carboxymethyl -3- methylimidazole, 1- carboxymethyl -4-methylimidazole tetrafluoroborate, chlorination 1- anthracene first
Base -3- methylimidazole, 1,3- methylimidazole dimethyl phosphate salt, 1- alkyl (hydroxyl) -3- methylimidazole p-sulfonic acid base polyphenyl
Ethylene salt, 1- ethyl-3-methylimidazole fluoroform sulphonate, iodate 1- ethyl-3-methylimidazole, bromination 1- cetyl -3-
Methylimidazole, 1- cetyl -3- methyl imidazolium tetrafluoroborate, cetyl -3- methylimidazole hexafluorophosphate, 1- 16
Alkyl -3- methylimidazole fluoroform sulphonate, 1- butyl -3- methylimidazolium hydrogen sulphate salt, 1- butyl -3- methylimidazole methanesulfonic acid
Salt, 1- butyl -3- methylimidazole dibutylphosphoric acid ester salt, 1- butyl -3- methylimidazole dicyandiamide salt, 1- butyl -3- methylimidazole
Hexafluoro antimonate, 1- butyl -3- methylimidazolium nitrate, 1- butyl -3- methylimidazole octyl sulfate salt, 1- butyl -3- methyl miaow
Azoles rhodanate, 1- butyl -3- methylimidazole tosilate, 1- carboxymethyl -3- methylimidazole hexafluorophosphate, bromination 1-
Carboxymethyl-3- methylimidazole, 4- (3- methyl-1-imidazoles)-1- butyl sulfonic acid inner salt, 4- (3- methyl-1-imidazoles)-1- butyl sulphur
Sour disulfate, 4- (3- methyl-1-imidazoles)-1- butyl sulfonic acid fluoroform sulphonate, bromination 1- allyl-3- methylimidazole,
Chlorination 1- ethylacrylate methyl -3- methylimidazole, 1- ethylacrylate methyl -3- methyl imidazolium tetrafluoroborate, hydroxide 1- butyl -3- methyl
Imidazoles, chlorination 1- butyl -2,3- methylimidazole, bromination 1- butyl -2,3- methylimidazole, 1- butyl -2,3- dimethyl miaow
Azoles hexafluorophosphate, 1- butyl -2,3- methylimidazole tetrafluoroborate, chlorination 1,3- dimethylene anthracene imidazoles, 1,3- diformazan
Base imidazoles Methylsulfate salt, chlorination 1- butyl -3- methylimidazole, bis- fluorenyl imidazoles of bromination 1,3-, 1- ethyl-3-methylimidazole three
Cyanogen first salt, 1-butyl-3-methylimidazolium bromide, 1- butyl -3- methyl imidazolium tetrafluoroborate, 1- butyl -3- methylimidazole six
Fluorophosphate, 1- butyl -3- methylimidazole fluoroform sulphonate, 1- butyl -3- methylimidazole bis-trifluoromethylsulfoandimide salt, bromine
Change 1- ethyl-3-methylimidazole, 1- ethyl-3-methylimidazole tetrafluoroborate, 1- ethyl-3-methylimidazole hexafluorophosphate,
1- ethyl-3-methylimidazole bis-trifluoromethylsulfoandimide salt, chlorination 1- hexyl -3- methylimidazole, bromination 1- hexyl -3- methyl miaow
Azoles, 1- hexyl -3- methyl imidazolium tetrafluoroborate, 1- hexyl -3- methylimidazole hexafluorophosphate, bromination 1- octyl -3- methyl
Imidazoles, 1- octyl -3- methyl imidazolium tetrafluoroborate, 1- octyl -3- methylimidazole hexafluorophosphate, 1- hexyl -3- methyl miaow
Azoles fluoroform sulphonate, 1- hexyl -3- methylimidazole bis-trifluoromethylsulfoandimide salt, bromination 1- decyl -3- methylimidazole, the 1- last of the ten Heavenly stems
Base -3- methyl imidazolium tetrafluoroborate, 1- decyl -3- methylimidazole hexafluorophosphate, 1- decyl -3- methylimidazole trifluoro methylsulphur
Hydrochlorate, bromination 1- dodecyl -3- methylimidazole, 1- dodecyl -3- methyl imidazolium tetrafluoroborate, 1- dodecyl -3-
Methylimidazole hexafluorophosphate, 1- dodecyl -3- methylimidazole fluoroform sulphonate, 1- dodecyl -3- methylimidazole are double
Trifluoro sulfonamide, 1- ethyl -2,3- methylimidazole hydrobromate, 1- ethyl -2,3- methylimidazole tetrafluoro boric acid
Salt, 1- ethyl -2,3- methylimidazole hexafluorophosphate, 1- ethyl -2,3- methylimidazole fluoroform sulphonate, 1- ethyl -
2,3- methylimidazole bis-trifluoromethylsulfoandimide salt, 1- butyl -2,3- methylimidazole fluoroform sulphonate, butyl -2 1-,
3- methylimidazole mesylate, the pungent sulfonate of 1- butyl -2,3- methylimidazole, 1- butyl -2,3- methylimidazole are to first
Benzene sulfonate, 1- butyl -2,3- methylimidazole bis-trifluoromethylsulfoandimide salt, 1- butyl -2,3- methylimidazole thiocyanic acid
Salt, 1- hexyl -2,3- methylimidazole hydrobromate, 1- hexyl -2,3- methylimidazole tetrafluoroborate, 1- hexyl -2,3-
Methylimidazole hexafluorophosphate, 1- hexyl -2,3- methylimidazole fluoroform sulphonate, 1- hexyl -2,3- methylimidazole
The double trifluoro methylsulfonyls of mesylate, 1- hexyl -2,3- methylimidazole tosilate, 1- hexyl -2,3- methylimidazole
Inferior amine salt, 1- octyl -2,3- methylimidazole hydrobromate, 1- octyl -2,3- methylimidazole tetrafluoroborate, 1- octyl -
2,3- methylimidazole hexafluorophosphate, 1- octyl -2,3- methylimidazole fluoroform sulphonate, 1- octyl -2,3- dimethyl
Imidazoles tosilate, 1- octyl -2,3- methylimidazole bis-trifluoromethylsulfoandimide salt, 1- decyl -2,3- dimethyl miaow
Azoles hydrobromate, 1- decyl -2,3- methylimidazole tetrafluoroborate, 1- decyl -2,3- methylimidazole hexafluorophosphate, 1-
Decyl -2,3- methylimidazole fluoroform sulphonate, 1- decyl -2,3- methylimidazole mesylate, 1- decyl -2,3- diformazan
Base imidazoles fluoroform sulphonate, 1- decyl -2,3- methylimidazole bis-trifluoromethylsulfoandimide salt, 1- cetyl -2,3- two
Methylimidazole hydrobromate, 1- cetyl -2,3- methylimidazole tetrafluoroborate, 1- cetyl -2,3- dimethyl miaow
Azoles hexafluorophosphate, 1- cetyl -2,3- methylimidazole fluoroform sulphonate, 1- cetyl -2,3- methylimidazole
Mesylate, 1- cetyl -2,3- methylimidazole tosilate, 1- cetyl -2,3- methylimidazole double three
Fluorine sulfonamide, 1- ethyl-3-methylimidazole L lactate, bromination 1- propyl -3- methylimidazole, iodate 1- hexyl -3- first
Base imidazoles, chlorination 1- menaphthyl -3- methylimidazole, bromination 1- fluorenyl -3- methylimidazole, iodate 1,3- methylimidazole, 1- second
Base -3- methylimidazole is to toluene sulphur salt, 1- ethyl-3-methylimidazole dicyandiamide salt, ten disulfonic acid of 1- ethyl-3-methylimidazole
Salt, 1- ethyl-3-methylimidazole mesylate, 1- ethyl-3-methylimidazole ethyl-sulfate salt, 1- ethyl-3-methylimidazole three
Fluoroacetate, 1- ethyl-3-methylimidazole perchlorate, 1- decyl -3- methylimidazole bis-trifluoromethylsulfoandimide salt, 1- fourth
Base -2,3- methylimidazole dicyandiamide salt, 1- benzyl -3- methylimidazole fluoroform sulphonate, bromination 1- benzyl -3- methyl miaow
Azoles, 1- benzyl -3- methylimidazole hexafluorophosphate, 1- benzyl -3- methylimidazole bis-trifluoromethylsulfoandimide salt, 1- allyl -
3- methylimidazole bis-trifluoromethylsulfoandimide salt, 1- allyl -3- methylimidazole hexafluorophosphate, 1- propyl -3- methylimidazole
More than one in hexafluorophosphate etc..
The ionic liquid material of pyridines cation is bromination N- ethylpyridine, ethiodide pyridine, N- ethylpyridine
Tetrafluoroborate, N- ethylpyridine hexafluorophosphate, N-butylpyridinium Chloride, bromination N- butyl-pyridinium, iodate N- butyl-pyridinium,
N- butyl-pyridinium tetrafluoroborate, N- butyl-pyridinium hexafluorophosphate, N- butyl-pyridinium fluoroform sulphonate, iodate N- octyl pyrrole
Pyridine, chlorination N- octylpyridinium, bromination N- octylpyridinium, N- octylpyridinium tetrafluoroborate, N- octylpyridinium hexafluorophosphate, chlorine
Change N- hexyl pyridine, bromination N- hexyl pyridine, iodate N- hexyl pyridine, N- hexyl pyridinium tetrafluoroborate salt, N- hexyl pyridine six
More than one in fluorophosphate.
The ionic liquid material chlorination N- triethyl group of quaternary ammonium salt cation-(4- vinyl benzyl) ammonium, chlorination N- front three
Base -4- vinyl benzyl) ammonium, tetrabutylammonium hexafluorophosphate, tetrabutylammonium hexafluorophosphate, chlorination trimethyl hydroxyethylammonium amine,
The double trifluoro methylsulfonyls of trimethyl hydroxyethylammonium ammonium tetrafluoroborate, trimethyl hydroxyethylammonium ammonium hexafluorophosphate, trimethyl hydroxyethylammonium ammonium
More than one in inferior amine salt etc..
The ionic liquid material of quaternary phosphine salt cation is tributyl methyl phosphonium iodide phosphine, tributyl ethyl phosphonium bromide phosphine, three fourths
Base ethyl phosphine tetrafluoroborate, tributyl ethyl phosphine hexafluorophosphate, tributyl ethyl phosphine bis-trifluoromethylsulfoandimide salt, four fourths
Base bromide phosphine, tetrabutyl phosphine tetrafluoroborate, tetrabutyl phosphine hexafluorophosphate, tetrabutyl phosphine bis-trifluoromethylsulfoandimide salt, three
Butyl hexyl bromide phosphine, tributyl hexyl phosphine tetrafluoroborate, tributyl hexyl phosphine hexafluorophosphate, tributyl hexyl phosphine double three
Fluorine sulfonamide, tributyl octyl bromide phosphine, tributyl decyl base bromide phosphine, tributyl dodecyl bromination phosphine, three fourths
It is one or more kinds of in base myristyl bromide phosphine etc..
The polymer dielectric be selected from polyetherimide, polyethyleneimine, polyoxyethylene, polyvinyl chloride, polyacrylonitrile,
Polymethyl methacrylate, poly- [bis- (N, the N- DimethylAminopropyl) fluorenes of 9,9- dioctyl fluorene -9,9-], it is poly- [phenylene -9 1,4-,
Bis- (N, the N- DimethylAminopropyl) fluorenes of 9-], poly- [9,9- dioctyl fluorenes -9,9- (bis- (3,-(N, N- dimethyl)-N- ethyl ammonium) third
Base) fluorenes] dibromo, poly- [Isosorbide-5-Nitrae-phenylene -9,9- (bis- (3,-(N, N- dimethyl)-N- ethyl ammonium) propyl) fluorenes] dibromo, poly- (2-
Methoxyl group -5- (2- ethyl hexyl oxy)-Isosorbide-5-Nitrae-phenylene ethylene), poly- (2- (4- (3,7,-dimethyl-octa oxygroup) benzene)-Isosorbide-5-Nitrae-benzene
One or more of support ethylene) etc..
The hole transmission layer is directly contacted with the anode, photoactive layer, conduction hole and blocking electronics；The electricity
Sub- transport layer is directly contacted with the cathode, photoactive layer, is conducted electronics and is stopped hole.
A kind of preparation method of the organic solar batteries using functionalization graphene quantum dot as electron transfer layer, should
Method is the following steps are included: prepare the functionalization graphene quantum dot that uniform thickness range is 1-100nm in cathode layer surface
Film is as electron transfer layer, then the photoactive layer prepared on the electron transport layer with a thickness of 10-500nm, then at far from cathode
The photoactive layer other side prepare hole transmission layer and anode layer, prepare organic solar batteries；
Or
Hole transmission layer is prepared in anode layer surface, is then prepared on the hole transport layer living with a thickness of the light of 10-500nm
Property layer, then by the preparation of functionalization graphene quantum dot film on photoactive layer surface, forming uniform thickness range is 1-100nm
Electron transfer layer, then prepare cathode layer on the electron transport layer, prepare organic solar batteries.
Particularly, cathode layer surface prepares the functionalization graphene quantum dot film that uniform thickness range is 1-100nm
It is also made annealing treatment behind photoactive layer surface afterwards or by the preparation of functionalization graphene quantum dot film；Making annealing treatment temperature is
80-200℃。
Particularly, function graphite in the functionalization graphene quantum dot solution of functionalization graphene quantum dot film is prepared
The concentration of alkene quantum dot is 0.01-100mg/ml.
Beneficial effects of the present invention are as follows: the present invention carries out chemical modification processing to graphene quantum dot, adjusts graphene
The work content of quantum dot, to reduce the contact berrier between active layer and electrode, electrode is to light in raising organic solar batteries
Raw carrier collection efficiency, makes it suitable as the electron transfer layer of organic solar batteries, is significantly improving organic solar
It is reduced its cost while cell photoelectric transfer efficiency.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram for the organic solar batteries that the embodiment of the present invention 1 obtains；
Fig. 2 is the structural schematic diagram for the organic solar batteries that the embodiment of the present invention 2 obtains；
Wherein, A, glass substrate, 1, cathode layer, 2, electron transfer layer, 3, photoactive layer, 4, hole transmission layer, 5, anode
Layer.
Specific embodiment:
It is to further explanation of the invention, rather than limiting the invention below.
Embodiment 1:
Anode layer 5, hole transmission layer 4 are sequentially prepared in ito glass upper surface of substrate and then are revolved on hole transmission layer 4
Apply 100nm thickness component ratio be 1:1 it is poly- [(2,6- (bis- (5- (2- ethylhexyl) thiophene -2- base) benzos of 4,8- [1,2-B:4,
5-B'] Dithiophene) -co- (1,1,3- bis- bis- (2- ethylhexyl) benzos [1,2-C:4,5-C'] two of (5- thiophene -2- base) -5,7-
Thiophene -4,8- diketone)] (abbreviation PBDB-T) and (3- (1,1- dicyano methylene) -1- methyl-indone) -5,5,11,11-
Four (4- hexyl phenyl)-dithieno [2,3-d:2', 3'-d']-s benzos, two indeno [1,2-b:5,6-b']-Dithiophene) (letter
Claim IT-M) film preparation photoactive layer 3, then by functionalization graphene quantum dot solution (functionalization graphene quantum dot in solution
Concentration be 2mg/ml) be spin-coated on 3 surface of photoactive layer, formed uniform thickness range be 100nm film then to function
Graphite alkene quantum dot is made annealing treatment to obtain electron transfer layer 2, is then transferred in deposition system and is deposited in electron transfer layer 2
Metallic cathode prepares cathode layer 1, prepares the normal structure of organic solar batteries as shown in Figure 1, the battery includes successively
Cathode layer 1, electron transfer layer 2, photoactive layer 3, hole transmission layer 4, the anode layer 5 being stacked additionally include glass lined
Bottom A, anode layer 5 are arranged on glass substrate A.I-V test is carried out to obtained battery, the circuital current of device is 17.77mA/
cm2, open-circuit voltage is 0.90V, and fill factor is 65.59%, and photoelectric conversion efficiency is 10.51%.
Embodiment 2:
Reference implementation example 1, the difference is that: by functionalization graphene quantum dot solution (functionalization graphene in solution
The concentration of quantum dot is 100mg/ml) it is spin-coated on 3 surface of photoactive layer, form the film that uniform thickness range is 1nm.It is right
Obtained battery carries out I-V test, and the circuital current of device is 16.65mA/cm2, open-circuit voltage is 0.91V, and fill factor is
68.84%, photoelectric conversion efficiency is 10.43%.
Embodiment 3:
Cathode layer is prepared in ito glass upper surface of substrate, by the solution of functionalization graphene quantum dot (functionalization in solution
The concentration of graphene quantum dot is 0.01mg/ml) it is spin-coated on cathode layer surface, forming uniform thickness range is the thin of 100nm
Film；Then made annealing treatment to obtain spin coating 100nm on electron transfer layer, then electron transfer layer to functionalization graphene quantum dot
Thick component ratio is the PBDB-T:IT-M film preparation photoactive layer of 1:1, is prepared then at the photoactive layer other side far from cathode
Hole transmission layer, be then transferred in deposition system hole transport layer surface vapor deposition anode prepare anode layer, prepare it is organic too
The inverted structure of positive energy battery is as shown in Fig. 2, the battery includes that the cathode layer 1, electron transfer layer 2, light being cascading are lived
Property layer 3, hole transmission layer 4, anode layer 5, additionally include glass substrate A, cathode layer 1 be arranged on glass substrate A.To obtaining
Battery carry out I-V test, the circuital current of device is 16.50mA/cm2, open-circuit voltage is 0.91V, and fill factor is
69.18%, photoelectric conversion efficiency is 10.38%.
Embodiment 4:
Reference implementation example 1, difference is, functionalization graphene quantum dot is not made annealing treatment, without preparing cathode
Layer or anode layer, are replaced with Conducting Glass.
In Conducting Glass upper surface be sequentially prepared hole transmission layer, and then prepare on the hole transport layer with a thickness of
The photoactive layer of 100nm, then by the preparation of functionalization graphene quantum dot film on photoactive layer surface, formed uniformly with a thickness of
The film of 100nm is as electron transfer layer, then prepares cathode layer on the electron transport layer, prepares organic solar batteries.It is right
Obtained battery carries out I-V test, and the circuital current of device is 16.52mA/cm2, open-circuit voltage is 0.91V, and fill factor is
67.55%, photoelectric conversion efficiency is 10.11%.
Embodiment 5:
Reference implementation example 3, difference is, functionalization graphene quantum dot is not made annealing treatment, without preparing cathode
Layer or anode layer, are replaced with Conducting Glass.
In the preparation of Conducting Glass upper surface uniformly with a thickness of the functionalization graphene quantum dot of 100nm by functionalization
Graphene quantum dot solution (concentration of functionalization graphene quantum dot is 0.01mg/ml in solution) is spin-coated on Conducting Glass
Surface, formed uniform thickness range be 100nm film as electron transfer layer, then prepare on the electron transport layer with a thickness of
The photoactive layer of 100nm prepares hole transmission layer and anode layer then at the photoactive layer other side far from cathode, prepares organic
Solar battery；I-V test is carried out to obtained battery, the circuital current of device is 16.50mA/cm2, open-circuit voltage is
0.90V, fill factor are 68.92%, and photoelectric conversion efficiency is 10.23%.
Claims (8)
1. a kind of organic solar batteries using functionalization graphene quantum dot as electron transfer layer, which is characterized in that should
Battery includes the cathode layer being cascading, electron transfer layer, photoactive layer, hole transmission layer, anode layer, additionally includes
Glass substrate, cathode layer or anode layer are arranged on a glass substrate, the electron transfer layer being arranged between cathode layer and photoactive layer
For functionalization graphene quantum dot.
2. the organic solar electricity according to claim 1 using functionalization graphene quantum dot as electron transfer layer
Pond, which is characterized in that the functionalization graphene quantum dot is the preparation method is as follows: graphene quantum dot and ionic liquid, polymerize
The mixing of one or both of object electrolyte material is dried to obtain functionalization graphene quantum dot after 50-100 DEG C of reaction, wherein
The content of raw material intermediate ion liquid or polymer dielectric is 1-50wt%.
3. the organic solar electricity according to claim 2 using functionalization graphene quantum dot as electron transfer layer
Pond, which is characterized in that the ionic liquid is containing imidazoles, pyridines, the ionic liquid of quaternary ammonium salt or quaternary phosphine salt cation
One or more of body material.
4. the organic solar electricity according to claim 2 using functionalization graphene quantum dot as electron transfer layer
Pond, which is characterized in that the polymer dielectric is selected from polyetherimide, polyethyleneimine, polyoxyethylene, polyvinyl chloride, gathers
Acrylonitrile, polymethyl methacrylate, poly- [bis- (N, the N- DimethylAminopropyl) fluorenes of 9,9- dioctyl fluorene -9,9-], poly- [1,4- is sub-
Bis- (N, the N- DimethylAminopropyl) fluorenes of phenyl -9,9-], it is poly- [9,9- dioctyl fluorenes -9,9- (it is bis- (3,-(N, N- dimethyl)-N- second
Base ammonium) propyl) fluorenes] dibromo, poly- [Isosorbide-5-Nitrae-phenylene -9,9- (bis- (3,-(N, N- dimethyl)-N- ethyl ammonium) propyl) fluorenes] two
Bromine, poly- (2- methoxyl group -5- (2- ethyl hexyl oxy)-Isosorbide-5-Nitrae-phenylene ethylene), poly- (2- (4- (3,7,-dimethyl-octa oxygroup)
One or more of benzene) -1,4- phenylene ethylene).
5. using functionalization graphene quantum dot as the organic solar batteries of electron transfer layer described in a kind of claim 1
Preparation method, which is characterized in that method includes the following steps: preparing uniform thickness range in cathode layer surface is 1-
The functionalization graphene quantum dot film of 100nm is as electron transfer layer, then is prepared on the electron transport layer with a thickness of 10-
The photoactive layer of 500nm prepares hole transmission layer and anode layer then at the photoactive layer other side far from cathode, prepares organic
Solar battery；
Or
Hole transmission layer is prepared in anode layer surface, then prepares the photolytic activity with a thickness of 10-500nm on the hole transport layer
Layer, then by the preparation of functionalization graphene quantum dot film on photoactive layer surface, forming uniform thickness range is 1-100nm's
Electron transfer layer, then cathode layer is prepared on the electron transport layer, prepare organic solar batteries.
6. using functionalization graphene quantum dot as the organic solar batteries of electron transfer layer according to claim 5
Preparation method, which is characterized in that cathode layer surface prepares the functionalization graphene quantum dot that uniform thickness range is 1-100nm
It is also made annealing treatment behind photoactive layer surface after film or by the preparation of functionalization graphene quantum dot film.
7. using functionalization graphene quantum dot as the organic solar batteries of electron transfer layer according to claim 6
Preparation method, which is characterized in that annealing temperature is at 80-200 DEG C.
8. according to the organic solar electricity using functionalization graphene quantum dot as electron transfer layer of claim 5 or 6
The preparation method in pond, which is characterized in that prepare in the functionalization graphene quantum dot solution of functionalization graphene quantum dot film
The concentration of functionalization graphene quantum dot is 0.01-100mg/ml.
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