CN104021942B - A kind of method improving Zinc oxide-base DSSC photoelectric properties - Google Patents
A kind of method improving Zinc oxide-base DSSC photoelectric properties Download PDFInfo
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- Y02E10/542—Dye sensitized solar cells
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Abstract
The present invention relates to a kind of method improving Zinc oxide-base DSSC photoelectric properties.The method is first with metal-organic framework material MOF 5 as presoma, the ZnO aggregation in parallelepiped-shaped for the preparation, and as the scattering layer of ZnO photo-anode, then regulate and control layer in this double-deck photoanode surface growth metal-organic framework material ZIF 8 as interface, thus be remarkably improved the photoelectric properties of Zinc oxide-base DSSC.The method is simple, it is easy to implement.
Description
Technical field
The invention belongs to area of solar cell, be more particularly to a kind of method improving Zinc oxide-base DSSC photoelectric properties.
Background technology
DSSC has that cheap, environmental friendliness, making be simple, conversion efficiency advantages of higher, becomes the representative of third generation solar cell.In the light anode material of DSSC, ZnO because have high electron mobility, the easily pattern of regulation and control, the various features such as suitable band structure, obtained extensive research.In order to adsorb enough dyestuffs, light anode material generally uses nano-ZnO, so that electrode material has certain light transmittance, reduces the overall performance of the utilization to incident light and battery.In order to improve the light collection efficiency of electrode material, one layer of light scattering layer can be prepared on its surface, but serve as the research of light scattering layer with the ZnO aggregation in parallelepiped-shaped and have not been reported.Meanwhile, serve as interface regulation and control layer with metal-organic framework material, the corrosion resistance to soda acid for the ZnO can be strengthened, improve the overall performance of battery further.
Content of the invention
Present invention aims to the deficiencies in the prior art, a kind of method improving Zinc oxide-base DSSC photoelectric properties is provided.The method is using the ZnO aggregation in parallelepiped-shaped as light scattering layer, and utilizes metal-organic framework material ZIF-8 as interface adjusting control agent, considerably improves the photoelectric properties of zno-based DSSC.
For realizing the object of the invention, the present invention implements by following technical solution:
A kind of method improving Zinc oxide-base DSSC photoelectric properties, prepares the zinc oxide aggregates in parallelepiped-shaped with metal-organic framework material MOF-5 for presoma, and is printed on ZnO photo-anode surface and serves as scattering layer；Then in ZnO photo-anode superficial growth metal-organic framework material ZIF-8 containing scattering layer, serve as interface regulation and control layer, the photoelectric properties of Zinc oxide-base DSSC can be significantly improved.
The method of described raising Zinc oxide-base DSSC photoelectric properties, concretely comprises the following steps:
1) ZnO nano crystalline substance is joined in the ethanol solution of ethyl cellulose, be sufficiently stirred for preparing slurry, be imprinted on electro-conductive glass with serigraphy and obtain pending ZnO electrode material in 525 DEG C of roasting 2h；
2) zinc nitrate and terephthalic acid (TPA) are joined N, in N '-dimethyl formamide, be stirred well to be completely dissolved, while stirring, in this settled solution, add triethylamine, continue stirring；Reaction terminates afterproduct and utilizes N, and N '-dimethyl formamide washs and is dried, obtains metal-organic framework material MOF-5；
3) powder body material of MOF-5 is joined in the ethanol solution containing ethyl cellulose and terpinol, it is sufficiently stirred for preparing MOF-5 precursor pulp, and after being screen printed onto ZnO electrode material surface, calcine in air, obtaining scattering layer, this scattering layer is made up of the ZnO aggregation of parallelepiped-shaped, the ZnO aggregation of described parallelepiped-shaped, the angle of its a, b axle is 60 degree, is made up of the ZnO particle of 80-200 nm size；
4) it is soaked in the ZnO electrode containing scattering layer in the growth mother liquid of metal-organic framework material ZIF-8, serve as interface regulation and control layer at its superficial growth ZIF-8；
5) electrode material finally giving, the liquid electrolyte solution to electrode and injection for the Pt are fitted together, form the nano-crystalline thin film solar cell of the dye sensitization of sandwich structure.
In the ethanol solution containing ethyl cellulose and terpinol described in step 3), the mass fraction of ethyl cellulose is 1-25wt%, and the mass fraction of terpinol is 1-12wt%.
Calcining heat described in step 3) is 350-550 DEG C, and calcination time is 1-6 h.
The thickness of the scattering layer described in step 3) is 0.5-8 μm.
Dissolved with zinc nitrate and 2-methylimidazole in growth mother liquid described in step 4), its concentration is 0.1-50 mmol/L.
The growth time of metal-organic framework material ZIF-8 described in step 4) is 2-60 minute.
It is an advantage of the current invention that:
The ZnO aggregation that the method is prepared in parallelepiped-shaped with metal-organic framework material MOF-5 for presoma serves as light scattering layer, and using metal-organic framework material ZIF-8 as interface adjusting control agent, the photoelectric transformation efficiency of dye sensitization ZnO solar cell can be improved significantly to 3.67% from 3.15%, performance enhancement more than 16%.
Brief description
Fig. 1 is the scanning electron microscope (SEM) photograph of the ZnO aggregation in parallelepiped-shaped；
Fig. 2 is the scanning electron microscope (SEM) photograph of the zinc oxide aggregates of the parallelepiped-shaped under high-resolution；
Fig. 3 is the powder diagram of the zinc oxide aggregates of parallelepiped-shaped.
Fig. 4 is that the ZnO aggregation in parallelepiped-shaped is as uv drs figure during light scattering layer；
Fig. 5 is the i-v curve figure of dye sensitization ZnO solar cell before and after process.
Specific embodiment
Present invention the following example further illustrates the present invention, but protection scope of the present invention is not limited to the following example.
Embodiment
1
1) it by the nanocrystalline ethanol solution joining ethyl cellulose of ZnO, is sufficiently stirred for preparing slurry, is imprinted on electro-conductive glass with serigraphy and obtains pending ZnO electrode material in 525 DEG C of roasting 2h；
2) zinc nitrate and terephthalic acid (TPA) are joined N, in N '-dimethyl formamide, be stirred well to be completely dissolved, while stirring, in this settled solution, add triethylamine, continue stirring；Reaction terminates afterproduct and utilizes N, and N '-dimethyl formamide washs and is dried, obtains metal-organic framework material MOF-5；
3) powder body material of MOF-5 is joined in the ethanol solution of ethyl cellulose containing 25wt% and 12wt% terpinol, it is sufficiently stirred for preparing MOF-5 precursor pulp, and after being screen printed onto ZnO electrode material surface, 350 DEG C of calcining 6 h in air, obtaining the scattering layer that thickness is 8 μm, this scattering layer is made up of the ZnO aggregation in parallelepiped-shaped；
4) being soaked in the ZnO electrode containing scattering layer in the ethanol solution that concentration is the zinc nitrate of 10 mM, 2-methylimidazole, soak time is 20 minutes, serves as interface regulation and control layer at its superficial growth ZIF-8；
5) electrode material finally giving, the liquid electrolyte solution to electrode and injection for the Pt are fitted together, form the nano-crystalline thin film solar cell of the dye sensitization of sandwich structure.
Embodiment
2
1) it by the nanocrystalline ethanol solution joining ethyl cellulose of ZnO, is sufficiently stirred for preparing slurry, is imprinted on electro-conductive glass with serigraphy and obtains pending ZnO electrode material in 525 DEG C of roasting 2h；
2) zinc nitrate and terephthalic acid (TPA) are joined N, in N '-dimethyl formamide, be stirred well to be completely dissolved, while stirring, in this settled solution, add triethylamine, continue stirring；Reaction terminates afterproduct and utilizes N, and N '-dimethyl formamide washs and is dried, obtains metal-organic framework material MOF-5；
3) powder body material of MOF-5 is joined in the ethanol solution of ethyl cellulose containing 12wt% and 8wt% terpinol, it is sufficiently stirred for preparing MOF-5 precursor pulp, and after being screen printed onto ZnO electrode material surface, 450 DEG C of calcining 2 h in air, obtaining the scattering layer that thickness is 4 μm, this scattering layer is made up of the ZnO aggregation in parallelepiped-shaped；
4) being soaked in the ZnO electrode containing scattering layer in the ethanol solution that concentration is the zinc nitrate of 0.1 mM, 2-methylimidazole, soak time is 60 minutes, serves as interface regulation and control layer at its superficial growth ZIF-8；
5) electrode material finally giving, the liquid electrolyte solution to electrode and injection for the Pt are fitted together, form the nano-crystalline thin film solar cell of the dye sensitization of sandwich structure.
Embodiment
3
1) it by the nanocrystalline ethanol solution joining ethyl cellulose of ZnO, is sufficiently stirred for preparing slurry, is imprinted on electro-conductive glass with serigraphy and obtains pending ZnO electrode material in 525 DEG C of roasting 2h；
2) zinc nitrate and terephthalic acid (TPA) are joined N, in N '-dimethyl formamide, be stirred well to be completely dissolved, while stirring, in this settled solution, add triethylamine, continue stirring；Reaction terminates afterproduct and utilizes N, and N '-dimethyl formamide washs and is dried, obtains metal-organic framework material MOF-5；
3) powder body material of MOF-5 is joined in the ethanol solution of ethyl cellulose containing 1wt% and 1wt% terpinol, it is sufficiently stirred for preparing MOF-5 precursor pulp, and after being screen printed onto ZnO electrode material surface, 550 DEG C of calcining 1 h in air, obtaining the scattering layer that thickness is 0.5 μm, this scattering layer is made up of the ZnO aggregation in parallelepiped-shaped；
4) being soaked in the ZnO electrode containing scattering layer in the ethanol solution that concentration is the zinc nitrate of 50 mM, 2-methylimidazole, soak time is 2 minutes, serves as interface regulation and control layer at its superficial growth ZIF-8；
5) electrode material finally giving, the liquid electrolyte solution to electrode and injection for the Pt are fitted together, form the nano-crystalline thin film solar cell of the dye sensitization of sandwich structure.
Fig. 1 is the scanning electron microscope (SEM) photograph of the ZnO aggregation in parallelepiped-shaped；Fig. 2 is the scanning electron microscope (SEM) photograph of the zinc oxide aggregates of the parallelepiped-shaped under high-resolution；Fig. 3 is the powder diagram of the zinc oxide aggregates of parallelepiped-shaped；Fig. 4 is that the ZnO aggregation in parallelepiped-shaped is as uv drs figure during light scattering layer；Fig. 5 is the i-v curve figure of dye sensitization ZnO solar cell before and after process.Indicating it can be seen that the front plan view of this zinc oxide aggregates is close to perfect parallelogram from Fig. 1；It figure it is seen that the angle of a, b axle of this parallelepiped closely 60 degree, is made up of the ZnO particle of 80-200 nm size；As can be seen from Figure 4, when utilizing the ZnO aggregation in parallelepiped-shaped as light scattering layer, ZnO film can more preferable scatter incident light；It is all significantly improved from fig. 5, it can be seen that have the open-circuit voltage of ZnO battery of scattering layer and interface regulation and control layer, short circuit current and photoelectric transformation efficiency.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with modify, all should belong to the covering scope of the present invention.
Claims (7)
1. the method improving Zinc oxide-base DSSC photoelectric properties, it is characterized in that: prepare the zinc oxide aggregates in parallelepiped-shaped with metal-organic framework material MOF-5 for presoma, and be printed on ZnO photo-anode surface and serve as scattering layer；Then in ZnO photo-anode superficial growth metal-organic framework material ZIF-8 containing scattering layer, serve as interface regulation and control layer, the photoelectric properties of Zinc oxide-base DSSC can be significantly improved；
Concretely comprise the following steps:
1) ZnO nano crystalline substance is joined in the ethanol solution of ethyl cellulose, be sufficiently stirred for preparing slurry, be imprinted on electro-conductive glass with serigraphy and obtain pending ZnO electrode material in 525 DEG C of roasting 2h；
2) zinc nitrate and terephthalic acid (TPA) are joined N, in N '-dimethyl formamide, be stirred well to be completely dissolved, prepare settled solution；While stirring, in this settled solution, add triethylamine, continue stirring；Reaction terminates afterproduct and utilizes N, and N '-dimethyl formamide washs and is dried, obtains metal-organic framework material MOF-5；
3) powder body material of MOF-5 is joined in the ethanol solution containing ethyl cellulose and terpinol, it is sufficiently stirred for preparing MOF-5 precursor pulp, and after being screen printed onto ZnO electrode material surface, calcine in air, obtaining scattering layer, this scattering layer is made up of the ZnO aggregation of parallelepiped-shaped；
4) it is soaked in the ZnO electrode containing scattering layer in the growth mother liquid of metal-organic framework material ZIF-8, serve as interface regulation and control layer at its superficial growth ZIF-8；
5) electrode material finally giving, the liquid electrolyte solution to electrode and injection for the Pt are fitted together, form the nano-crystalline thin film solar cell of the dye sensitization of sandwich structure.
2. the method for raising Zinc oxide-base DSSC photoelectric properties according to claim 1, it is characterized in that: in the ethanol solution containing ethyl cellulose and terpinol described in step 3), the mass fraction of ethyl cellulose is 1-25wt%, and the mass fraction of terpinol is 1-12wt%.
3. the method for raising Zinc oxide-base DSSC photoelectric properties according to claim 1, it is characterised in that: the calcining heat described in step 3) is 350-550 DEG C, and calcination time is 1-6 h.
4. the method for raising Zinc oxide-base DSSC photoelectric properties according to claim 1, it is characterized in that: the ZnO aggregation of the parallelepiped-shaped described in step 3), the angle of its a, b axle is 60 degree, is made up of the ZnO particle of 80-200 nm size.
5. the method for raising Zinc oxide-base DSSC photoelectric properties according to claim 1, it is characterised in that: the thickness of the scattering layer described in step 3) is 0.5-8 μm.
6. the method for raising Zinc oxide-base DSSC photoelectric properties according to claim 1, it is characterised in that: dissolved with zinc nitrate and 2-methylimidazole in the growth mother liquid described in step 4), its concentration is 0.1-50 mmol/L.
7. the method for raising Zinc oxide-base DSSC photoelectric properties according to claim 1, it is characterised in that: the growth time of metal-organic framework material ZIF-8 described in step 4) is 2-60 minute.
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| CN106531445A (en) * | 2016-12-07 | 2017-03-22 | 天津师范大学 | Preparation method for porous carbon material electrode for counter electrode of dye-sensitized solar cell |
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| CN105233800B (en) * | 2015-09-23 | 2017-12-05 | 辽宁大学 | A kind of ternary complex based on ZIF 8 and its preparation method and application |
| CN105271364B (en) * | 2015-11-21 | 2016-09-14 | 河南师范大学 | Utilize the method that metallic organic framework MOF-5 material prepares porous zinc bloom microsphere as predecessor |
| CN106449099B (en) * | 2016-11-08 | 2019-05-14 | 景德镇陶瓷大学 | A kind of preparation method and photo-anode film based on ZnO nano powder photo-anode film |
| CN109841410A (en) * | 2017-11-27 | 2019-06-04 | 李艳 | A kind of carbon-based preparation to electrode of quantum dot sensitized solar cell doping |
| CN109306077B (en) * | 2018-09-28 | 2020-11-03 | 河南牧业经济学院 | Organic-inorganic composite light diffusant, preparation method thereof and light diffusion film material containing light diffusant |
| CN109360862B (en) * | 2018-10-26 | 2020-09-01 | 中国石油大学(华东) | Self-driven photoelectric detector based on ZnO nanorod/Si heterojunction and preparation method |
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