CN105810441B - To electrode and preparation method thereof and dye-sensitized solar cells - Google Patents
To electrode and preparation method thereof and dye-sensitized solar cells Download PDFInfo
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- CN105810441B CN105810441B CN201610134421.2A CN201610134421A CN105810441B CN 105810441 B CN105810441 B CN 105810441B CN 201610134421 A CN201610134421 A CN 201610134421A CN 105810441 B CN105810441 B CN 105810441B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2022—Light-sensitive devices characterized by he counter electrode
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/542—Dye sensitized solar cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a kind of to electrode and preparation method thereof and dye-sensitized solar cells, belongs to field of photovoltaic devices.The method includes：It after nematic liquid crystal, polymerisable monomer, chipal compounds and photoinitiator are mixed in a certain ratio, pours into liquid crystal cell, cholesteric liquid crystal polymer is formed by liquid crystal cell described in ultraviolet light；Liquid crystal cell equipped with the cholesteric liquid crystal polymer is impregnated 24 hours in deionized water, obtains cholesteric liquid crystal thin polymer film；The ethanol solution of chloroplatinic acid is spun on electro-conductive glass FTO substrates, is annealed in the air that temperature is 400 DEG C, pyrolysis obtains transparent platinum to electrode；The cholesteric liquid crystal thin polymer film is attached at the transparent platinum to electrode, obtains controllable light reflection enhancement combined counter electrode.
Description
Technical field
The present invention relates to field of photovoltaic devices, more particularly to a kind of to electrode and preparation method thereof and dye sensitization of solar
Battery.
Background technology
Dye-sensitized solar cells is the photovoltaic device of new generation developed based on photosynthesis of plant principle.With biography
The silica-based solar cell of system is compared, and dye-sensitized solar cells is simple, of low cost with preparation process, is easy to large area
Many advantages, such as industrialized production, therefore have received widespread attention.
Light is absorbed and utilized in order to further increase dye-sensitized solar cells, people were continuous in past 20 years
It is proposed that new method is improved dye-sensitized solar cells.For example, introducing surface in dye-sensitized solar cells
The physical effects such as plasma resonance, upper conversion, are absorbed and utilized to improving dye-sensitized solar cells to sunlight effective
Means.For another example by the photonic crystal applications with artificial cycle structure in dye-sensitized solar cells, electricity is being improved
While the sun efficiency of light absorption of pond, the transparent characteristic of retaining means.
But in the implementation of the present invention, the inventor finds that the existing technology has at least the following problems：
The above method can be obviously improved the photoelectric conversion efficiency of battery device, but cause device architecture complicated, prepare
Cost is higher, it is difficult to the prevailing technology technical compatibility with current dye-sensitized solar cells.
Invention content
In order to solve problems in the prior art, an embodiment of the present invention provides a kind of to electrode and preparation method thereof and dyestuff
Sensitization solar battery.The technical solution is as follows：
In a first aspect, an embodiment of the present invention provides a kind of to electrode preparation method, the method includes：
After nematic liquid crystal, polymerisable monomer, chipal compounds and photoinitiator are mixed in a certain ratio, liquid crystal is poured into
In box, cholesteric liquid crystal polymer is formed by liquid crystal cell described in ultraviolet light；
Liquid crystal cell equipped with the cholesteric liquid crystal polymer is impregnated 24 hours in deionized water, obtains cholesteric phase liquid
Crystalline polymer film；
The ethanol solution of chloroplatinic acid is spun on electro-conductive glass FTO substrates, is annealed in the air that temperature is 400 DEG C, heat
Solution obtains transparent platinum to electrode；
The cholesteric liquid crystal thin polymer film is attached at the transparent platinum to electrode, it is multiple to obtain controllable light reflection enhancement
It closes to electrode.
In an implementation of the embodiment of the present invention, described by nematic liquid crystal, polymerisable monomer, chipal compounds
After being mixed in a certain ratio with photoinitiator, pour into liquid crystal cell, including：
The nematic liquid crystal, the polymerisable monomer, the chipal compounds and the photoinitiator are dissolved in dichloro
Methane obtains mixed solution, and ultrasonic disperse 20 minutes to two hours；
The mixed solution after ultrasonic disperse is put into baking oven, until the mixed solvent evaporating completely is mixed
Object；
At 60-80 DEG C, the mixture is poured into the liquid crystal cell.
In another realization method of the embodiment of the present invention, the nematic liquid crystal is 5CB；The polymerisable monomer is
C6M；The chipal compounds are R5011 or S5011；The photoinitiator is benzoin dimethylether.
In another realization method of the embodiment of the present invention, the nematic liquid crystal mass percent is 25~30%,
The polymerisable monomer mass percent is 65~70%, and the chipal compounds mass percent is 1~5%, and the light draws
It is 0.1% to send out agent mass percent.
It is described that cholesteric is formed by liquid crystal cell described in ultraviolet light in another realization method of the embodiment of the present invention
Phase liquid crystal polymer, including：
It for 365nm, intensity is 10mW cm to use wavelength-2Ultraviolet light described in liquid crystal cell 1 hour form cholesteric phase liquid
Crystalline polymer.
It is described to be attached at the cholesteric liquid crystal thin polymer film in another realization method of the embodiment of the present invention
The transparent platinum to electrode, including：
1~6 layer of cholesteric liquid crystal thin polymer film is attached at the transparent platinum to the electrode back side.
Second aspect, an embodiment of the present invention provides a kind of to electrode, described to be used as described in relation to the first aspect to electrode
Electrode preparation method is prepared, it is described to include to electrode：
Transparent platinum is to electrode and is covered in cholesteric liquid crystal thin polymer film of the transparent platinum to the electrode back side.
In an implementation of the embodiment of the present invention, the nematic liquid crystal is 5CB；The polymerisable monomer is
C6M；The chipal compounds are R5011 or S5011；The photoinitiator is benzoin dimethylether.
In another realization method of the embodiment of the present invention, the nematic liquid crystal mass percent is 25~30%,
The polymerisable monomer mass percent is 65~70%, and the chipal compounds mass percent is 1~5%, and the light draws
It is 0.1% to send out agent mass percent.
The third aspect, an embodiment of the present invention provides a kind of dye-sensitized solar cells, the dye sensitization of solar
Battery includes second aspect any one of them to electrode.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is：
It is provided by the invention can be compatible with current mainstream battery structure and technology of preparing to electrode preparation method.Technique letter
Single, stability is good, application easy to promote large-scale, and obtained can significantly improve dye molecule to specific wavelength model to electrode
Being absorbed and utilized for interior photon is enclosed, the photogenerated current density and photoelectric conversion efficiency of battery device are greatly improved.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of flow chart to electrode preparation method provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram to electrode provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of dye-sensitized solar cells provided in an embodiment of the present invention；
Fig. 4 is the relational graph of photogenerated current density and open-circuit voltage provided in an embodiment of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of flow chart to electrode preparation method provided in an embodiment of the present invention, and referring to Fig. 1, method includes：
Step 101：After nematic liquid crystal, polymerisable monomer, chipal compounds and photoinitiator are mixed in a certain ratio,
It pours into liquid crystal cell, cholesteric liquid crystal polymer is formed by ultraviolet light liquid crystal cell.
In an implementation of the embodiment of the present invention, by nematic liquid crystal, polymerisable monomer, chipal compounds and light
After initiator is mixed in a certain ratio, pour into liquid crystal cell, including：
Nematic liquid crystal, polymerisable monomer, chipal compounds and photoinitiator are dissolved in dichloromethane and obtain mixed solution,
And ultrasonic disperse 20 minutes to two hours；
Mixed solution after ultrasonic disperse is put into baking oven, until mixed solvent evaporating completely obtains mixture；
Under 60-80 DEG C (preferably 70 DEG C), said mixture is poured into liquid crystal cell.
Wherein, the ultrasonic disperse time is preferably 0.5 hour, that is, has achieved the effect that ultrasonic disperse, and is unlikely to take
It is long.
In embodiments of the present invention, nematic liquid crystal is 5CB；Polymerisable monomer is C6M；Chipal compounds are R5011
Or S5011；Photoinitiator is benzoin dimethylether.
In embodiments of the present invention, nematic liquid crystal mass percent is 25~30%, polymerisable monomer mass percent
It is 65~70%, chipal compounds mass percent is 1~5%, and photoinitiator mass percent is 0.1%.
In an implementation of the embodiment of the present invention, cholesteric liquid crystal polymerization is formed by ultraviolet light liquid crystal cell
Object, including：
It for 365nm, intensity is 10mW cm to use wavelength-2Ultraviolet light liquid crystal cell 1 hour to form cholesteric liquid crystal poly-
Close object.
Step 102：Liquid crystal cell equipped with cholesteric liquid crystal polymer is impregnated 24 hours in deionized water, obtains cholesteric
Phase liquid crystal polymer film.
Step 102 gained cholesteric liquid crystal thin polymer film have controllable reflection wavelength, controllable ranging from 350~
1000nm。
Step 103：The ethanol solution of chloroplatinic acid is spun on electro-conductive glass FTO substrates, in the air that temperature is 400 DEG C
Annealing, pyrolysis obtain transparent platinum to electrode.
Step 104：Cholesteric liquid crystal thin polymer film is attached at transparent platinum to electrode, it is multiple to obtain controllable light reflection enhancement
It closes to electrode.
In an implementation of the embodiment of the present invention, cholesteric liquid crystal thin polymer film is attached at transparent platinum to electricity
Pole, including：
1~6 layer of cholesteric liquid crystal thin polymer film is attached at transparent platinum to the electrode back side.
Preferably, the number of plies of cholesteric liquid crystal thin polymer film is 6 layers, and the number of plies is more, and reflecting effect is better, but number of plies mistake
It can mostly cause again blocked up to thickness of electrode.
Fig. 2 is a kind of structural schematic diagram to electrode provided in an embodiment of the present invention, is made using the method that Fig. 1 is provided,
Referring to Fig. 2, include to electrode：
Transparent platinum is to electrode 201 and is covered in cholesteric liquid crystal thin polymer film 202 of the transparent platinum to the electrode back side, courage
Steroid phase liquid crystal polymer film 202 be by nematic liquid crystal, polymerisable monomer, chipal compounds and photoinitiator by a certain percentage
It after mixing, pours into liquid crystal cell, after forming cholesteric liquid crystal polymer by ultraviolet light liquid crystal cell, then cholesteric phase will be housed
The liquid crystal cell of liquid crystal polymer impregnates in deionized water to be obtained for 24 hours.
In embodiments of the present invention, nematic liquid crystal 5CB；Polymerisable monomer is C6M；Chipal compounds be R5011 or
S5011；Photoinitiator is benzoin dimethylether.
In embodiments of the present invention, nematic liquid crystal mass percent is 25~30%, polymerisable monomer mass percent
It is 65~70%, chipal compounds mass percent is 1~5%, and photoinitiator mass percent is 0.1%.
In embodiments of the present invention, transparent platinum is attached to the cholesteric liquid crystal thin polymer film 202 at 201 back side of electrode
The number of plies is 1-6 layers.
Preferably, the number of plies of cholesteric liquid crystal thin polymer film is 6 layers, and the number of plies is more, and reflecting effect is better, but number of plies mistake
It can mostly cause again blocked up to thickness of electrode.
In embodiments of the present invention, transparent platinum is spun on electro-conductive glass FTO linings to electrode 201 by the ethanol solution of chloroplatinic acid
Bottom is annealed in the air that temperature is 400 DEG C, and pyrolysis obtains.
Fig. 3 is a kind of structural schematic diagram of dye-sensitized solar cells provided in an embodiment of the present invention, referring to Fig. 3, dye
Expect that sensitization solar battery includes shown in Fig. 2 to electrode, includes transparent platinum to electrode 201 to electrode and be covered in transparent platinum
To the cholesteric liquid crystal thin polymer film 202 at the electrode back side.Dye-sensitized solar cells further include with to the dye of electrode contraposition
Material is sensitized light anode 301, the electrolyte layer 302 in dye sensitization light anode 301 and between electrode is arranged.Dye sensitization light sun
Pole 300 is about 10 microns of thick titanium dioxide nanocrystalline porous membranes, dyestuff N719；Electrolyte component in electrolyte layer 302
For：0.1mol/L 1- propyl -3- methylpyridinium iodides imidazoles drone (PMII), 0.05mol/L lithium iodides (LiI), the different sulphur cyanogen of 0.1mol/L
Sour guanidine (GNCS), 0.03mol/L iodine (I2) and 0.5mol/L tetra-terts pyridine (TBP), solvent are volume ratio 1:1 carbonic acid third
The mixed solution of enester and acetonitrile.
Below by citing to provided in an embodiment of the present invention to being carried out to the performance of electrode made from electrode preparation method
Explanation：
Embodiment 1
By nematic liquid crystal (5CB, 29.0%), polymerisable monomer (C6M, 67.6%), chipal compounds (R5011,
3.4%) and photoinitiator (benzoin dimethylether, 0.1%) is dissolved in dichloromethane, ultrasonic disperse 0.5 hour.Gained is mixed molten
Liquid is put into baking oven, until solvent evaporating completely obtains mixture.At 70 DEG C, said mixture is poured into self-control levelling and is orientated
Liquid crystal cell in, ultraviolet light (wavelength 365nm, intensity be 10mW cm-2) irradiate lower polymerization 1 hour.Liquid crystal cell is immersed in
24 hours in deionized water, cholesteric liquid crystal thin polymer film is obtained, vacuum drying is for use.
Embodiment 2
By nematic liquid crystal (5CB, 29.3%), polymerisable monomer (C6M, 68.3%), chipal compounds (R5011,
2.4%) and photoinitiator (benzoin dimethylether, 0.1%) is dissolved in dichloromethane, ultrasonic disperse 0.5 hour.Gained is mixed molten
Liquid is put into baking oven, until solvent evaporating completely obtains mixture.At 70 DEG C, said mixture is poured into self-control levelling and is orientated
Liquid crystal cell in, ultraviolet light (wavelength 365nm, intensity be 10mW cm-2) irradiate lower polymerization 1 hour.Liquid crystal cell is immersed in
24 hours in deionized water, cholesteric liquid crystal thin polymer film is obtained, vacuum drying is for use.
Embodiment 3
By nematic liquid crystal (5CB, 29.6%), polymerisable monomer (C6M, 69.0%), chipal compounds (R5011,
1.4%) and photoinitiator (benzoin dimethylether, 0.1%) is dissolved in dichloromethane, ultrasonic disperse 0.5 hour by a certain percentage.It will
Gained mixed solution is put into baking oven, until solvent evaporating completely obtains mixture.At 70 DEG C, said mixture is poured into certainly
In the liquid crystal cell that levelling processed is orientated, in ultraviolet light, (wavelength 365nm, intensity are 10mW cm-2) irradiate lower polymerization 1 hour.By liquid
Brilliant box impregnates 24 hours in deionized water, obtains cholesteric liquid crystal thin polymer film, vacuum drying is for use.
Embodiment 4
By nematic liquid crystal (5CB, 29.0%), polymerisable monomer (C6M, 67.4%), chipal compounds (S5011,
3.6%) and photoinitiator (benzoin dimethylether, 0.1%) is dissolved in dichloromethane, ultrasonic disperse 0.5 hour.Gained is mixed molten
Liquid is put into baking oven, until solvent evaporating completely obtains mixture.At 70 DEG C, said mixture is poured into self-control levelling and is orientated
Liquid crystal cell in, ultraviolet light (wavelength 365nm, intensity be 10mW cm-2) irradiate lower polymerization 1 hour.Liquid crystal cell is immersed in
24 hours in deionized water, cholesteric liquid crystal thin polymer film is obtained, vacuum drying is for use.
Embodiment 5
By nematic liquid crystal (5CB, 29.1%), polymerisable monomer (C6M, 67.9%), chipal compounds (S5011,
3.0%) and photoinitiator (benzoin dimethylether, 0.1%) is dissolved in dichloromethane, ultrasonic disperse 0.5 hour.Gained is mixed molten
Liquid is put into baking oven, until solvent evaporating completely obtains mixture.At 70 DEG C, said mixture is poured into self-control levelling and is orientated
Liquid crystal cell in, ultraviolet light (wavelength 365nm, intensity be 10mW cm-2) irradiate lower polymerization 1 hour.Liquid crystal cell is immersed in
24 hours in deionized water, cholesteric liquid crystal thin polymer film is obtained, vacuum drying is for use.
Embodiment 6
By nematic liquid crystal (5CB, 29.5%), polymerisable monomer (C6M, 68.8%), chipal compounds (S5011,
1.7%) and photoinitiator (benzoin dimethylether, 0.1%) is dissolved in dichloromethane, ultrasonic disperse 0.5 hour.Gained is mixed molten
Liquid is put into baking oven, until solvent evaporating completely obtains mixture.At 70 DEG C, said mixture is poured into self-control levelling and is orientated
Liquid crystal cell in, ultraviolet light (wavelength 365nm, intensity be 10mW cm-2) irradiate lower polymerization 1 hour.Liquid crystal cell is immersed in
24 hours in deionized water, cholesteric liquid crystal thin polymer film is obtained, vacuum drying is for use.
Embodiment 7
The ethanol solution of the chloroplatinic acid of a concentration of 5mM is dripped to dropwise in the FTO conductive substrates being fixed on sol evenning machine, is waited for
Solution starts spin coating after being paved with monoblock FTO conductive substrates, and spin coating parameters are：Low speed (400 revs/min, 6 seconds), high speed (1000
Rev/min, 20 seconds).Gained FTO conductive substrates are put into Muffle furnace, anneals, obtains in the air that temperature is 400 DEG C
Bright platinum is to electrode.
Embodiment 8
Gained cholesteric liquid crystal thin polymer film in embodiment 1 and embodiment 4 is sequentially attached in embodiment 7
The transparent platinum of gained obtains controllable light reflection enhancement combined counter electrode to electrode, and is assembled into dye-sensitized solar cells progress
Photoelectric properties are tested.The light anode of dye-sensitized solar cells is about 10 microns of thick titanium dioxide nanocrystalline porous membranes,
Dyestuff is N719；Electrolyte component is in electrolyte layer：0.1mol/L 1- propyl -3- methylpyridinium iodides imidazoles drone (PMII),
0.05mol/L lithium iodides (LiI), tetra- tertiary fourth of 0.1mol/L guanidinium isothiocyanates (GNCS), 0.03mol/L iodine (I2) and 0.5mol/L
Yl pyridines (TBP), solvent are volume ratio 1:1 propene carbonate and the mixed solution of acetonitrile.
Embodiment 9
Gained cholesteric liquid crystal thin polymer film in embodiment 2 and embodiment 5 is sequentially attached in embodiment 7
The transparent platinum of gained obtains controllable light reflection enhancement combined counter electrode to electrode, and is assembled into dye-sensitized solar cells progress
Photoelectric properties are tested.The light anode of dye-sensitized solar cells is about 10 microns of thick titanium dioxide nanocrystalline porous membranes,
Dyestuff is N719；Electrolyte component is in electrolyte layer：0.1mol/L 1- propyl -3- methylpyridinium iodides imidazoles drone (PMII),
0.05mol/L lithium iodides (LiI), tetra- tertiary fourth of 0.1mol/L guanidinium isothiocyanates (GNCS), 0.03mol/L iodine (I2) and 0.5mol/L
Yl pyridines (TBP), solvent are volume ratio 1:1 propene carbonate and the mixed solution of acetonitrile.
Embodiment 10
Gained cholesteric liquid crystal thin polymer film in embodiment 3 and embodiment 6 is sequentially attached in embodiment 7
The transparent platinum of gained obtains controllable light reflection enhancement combined counter electrode to electrode, and is assembled into dye-sensitized solar cells progress
Photoelectric properties are tested.The light anode of dye-sensitized solar cells is about 10 microns of thick titanium dioxide nanocrystalline porous membranes,
Dyestuff is N719；Electrolyte component is in electrolyte layer：0.1mol/L 1- propyl -3- methylpyridinium iodides imidazoles drone (PMII),
0.05mol/L lithium iodides (LiI), tetra- tertiary fourth of 0.1mol/L guanidinium isothiocyanates (GNCS), 0.03mol/L iodine (I2) and 0.5mol/L
Yl pyridines (TBP), solvent are volume ratio 1:1 propene carbonate and the mixed solution of acetonitrile.
Embodiment 11
Gained cholesteric liquid crystal thin polymer film in embodiment 1-6 is attached at reality by 3,6,2,5,1,4 sequencing
It applies the transparent platinum of gained in example 7 and controllable light reflection enhancement combined counter electrode is obtained to electrode, and be assembled into dye sensitization of solar electricity
Pond carries out photoelectric properties test.The light anode of dye-sensitized solar cells is that about 10 microns of thick titanium dioxide nanocrystallines are porous
Film, dyestuff N719；Electrolyte component is in electrolyte layer：0.1mol/L 1- propyl -3- methylpyridinium iodides imidazoles drone
(PMII), 0.05mol/L lithium iodides (LiI), 0.1mol/L guanidinium isothiocyanates (GNCS), 0.03mol/L iodine (I2) and 0.5mol/
L tetra-terts pyridine (TBP), solvent are volume ratio 1:1 propene carbonate and the mixed solution of acetonitrile.
The photoelectric properties test condition of dye-sensitized solar cells is in embodiment 8-11：Using U.S. Newport public affairs
The solar simulator of model 94023A is taken charge of as light source, irradiation intensity is 100mW cm-2, battery light-receiving area is
0.25cm-2。
The dye-sensitized solar cells photoelectric properties parameter specifically measured is as shown in table 1：
Table 1
From the data in table 1 and Fig. 4, it can be seen that controllable light reflection enhancement combined counter electrode of the present invention can significantly improve
The photogenerated current density and photoelectric conversion efficiency of battery device.
The preparation method of the middle controllable light reflection enhancement combined counter electrode of dye-sensitized solar cells can in the present invention
Compatible with current mainstream battery structure and technology of preparing, simple for process, stability is good, application easy to promote large-scale.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of to electrode preparation method, which is characterized in that the method includes：
After nematic liquid crystal, polymerisable monomer, chipal compounds and photoinitiator are mixed in a certain ratio, liquid crystal cell is poured into
In, cholesteric liquid crystal polymer is formed by liquid crystal cell described in ultraviolet light；
Liquid crystal cell equipped with the cholesteric liquid crystal polymer is impregnated 24 hours in deionized water, it is poly- to obtain cholesteric liquid crystal
Close object film；
The ethanol solution of chloroplatinic acid is spun on electro-conductive glass FTO substrates, anneals, is pyrolyzed to obtain in the air that temperature is 400 DEG C
To transparent platinum to electrode；
The cholesteric liquid crystal thin polymer film is attached at the transparent platinum to electrode, it is compound right to obtain controllable light reflection enhancement
Electrode.
2. according to the method described in claim 1, it is characterized in that, described by nematic liquid crystal, polymerisable monomer, chiral compound
After object and photoinitiator are mixed in a certain ratio, pour into liquid crystal cell, including：
The nematic liquid crystal, the polymerisable monomer, the chipal compounds and the photoinitiator are dissolved in dichloromethane
Obtain mixed solution, and ultrasonic disperse 20 minutes to two hours；
The mixed solution after ultrasonic disperse is put into baking oven, until the mixed solvent evaporating completely obtains mixture；
At 60-80 DEG C, the mixture is poured into the liquid crystal cell.
3. method according to claim 1 or 2, which is characterized in that the nematic liquid crystal is 5CB；The polymerizable list
Body is C6M；The chipal compounds are R5011 or S5011；The photoinitiator is benzoin dimethylether.
4. method according to claim 1 or 2, which is characterized in that the nematic liquid crystal mass percent be 25~
30%, the polymerisable monomer mass percent is 65~70%, and the chipal compounds mass percent is 1~5%, described
Photoinitiator mass percent is 0.1%.
5. method according to claim 1 or 2, which is characterized in that described to be formed by liquid crystal cell described in ultraviolet light
Cholesteric liquid crystal polymer, including：
It for 365nm, intensity is 10mW cm to use wavelength-2Ultraviolet light described in liquid crystal cell 1 hour to form cholesteric liquid crystal poly-
Close object.
6. method according to claim 1 or 2, which is characterized in that described to paste the cholesteric liquid crystal thin polymer film
The transparent platinum is invested to electrode, including：
1~6 layer of cholesteric liquid crystal thin polymer film is attached at the transparent platinum to the electrode back side.
7. a kind of to electrode, which is characterized in that described used to electrode as described in claim 1 prepares electrode preparation method
It obtains, it is described to include to electrode：
Transparent platinum is to electrode and is covered in cholesteric liquid crystal thin polymer film of the transparent platinum to the electrode back side.
8. according to claim 7 to electrode, which is characterized in that the nematic liquid crystal is 5CB；The polymerisable monomer
For C6M；The chipal compounds are R5011 or S5011；The photoinitiator is benzoin dimethylether.
9. according to claim 7 to electrode, which is characterized in that the nematic liquid crystal mass percent be 25~
30%, the polymerisable monomer mass percent is 65~70%, and the chipal compounds mass percent is 1~5%, described
Photoinitiator mass percent is 0.1%.
10. a kind of dye-sensitized solar cells, which is characterized in that the dye-sensitized solar cells includes claim 7-
9 any one of them are to electrode.
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| CN103151464A (en) * | 2013-01-30 | 2013-06-12 | 河北大学 | Organic solar cell, preparation method of organic solar cell and method of improving light absorption efficiency of organic solar cell |
| CN104142587B (en) * | 2014-07-16 | 2017-07-04 | 北京大学 | Bireflectance band cholesteric liquid crystal with reversible response characteristics to light and preparation method thereof |
| CN104834144B (en) * | 2015-05-12 | 2018-01-02 | 北京科技大学 | Method and the application of wide wave reflective film are prepared using ultraviolet polymerization synergy |
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2016
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