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Preparation method for optical anode of dye sensitization solar battery

A solar cell and dye sensitization technology, applied in the field of dye-sensitized solar cell materials, can solve the problems of low energy conversion efficiency and high cost, and achieve the effects of improving energy conversion efficiency, low reaction temperature and easy availability of raw materials

Inactive Publication Date: 2009-01-14
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Literature P.Wang, etc.J.Phys.Chem.B, 107(2003) 14336, reported TiO 2 Slurry hydrothermal preparation method, the cost of this method is high, the energy conversion efficiency is only 7.2%, and the preparation process needs to be further improved

Method used

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  • Preparation method for optical anode of dye sensitization solar battery

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Embodiment 1

[0017] 1) Preparation of TiO 2 Nanocrystalline slurry: Add acetic acid dropwise in the titanium tetrachloride solution, the weight ratio of titanium tetrachloride and acetic acid is 4:1, then pour the mixed solution of titanium tetrachloride and acetic acid into the amount of titanium tetrachloride 4.8 times the water, stir to produce precipitation; then add nitric acid with a weight of 0.05 times the amount of titanium tetrachloride, and dissolve it for 60 minutes at a temperature of 80°C to obtain a blue-light transparent sol; put the transparent sol into the titanium reaction kettle, At 250°C, react for 24 hours, remove water by rotary evaporation, add film-forming agent PEG20000 and dispersing solvent terpineol to obtain TiO 2 Nano crystal slurry, TiO in the slurry 2 The weight content is: 15%, and the weight content of PEG20000 is: 4.5%.

[0018] 2) Preparation of TiO 2 Light scattering layer slurry: TiO with a particle size of 200nm 2 , PEG20000 and terpineol are mix...

Embodiment 2

[0024] 1) Preparation of TiO 2 Nanocrystalline slurry: Add acetic acid dropwise in the tetrabutyl titanate solution, the weight ratio of tetrabutyl titanate and acetic acid is 4.8:1, then pour the mixed solution of tetrabutyl titanate and acetic acid into the titanic acid Stir in water with 4.8 times the amount of tetrabutyl titanate, and stir to produce precipitation; then add nitric acid with a weight of 0.09 times the amount of tetrabutyl titanate, and dissolve it at 60°C for 100 minutes to obtain a transparent sol with bluish light; put the transparent sol into In a titanium reactor, react at 200°C for 24 hours, remove water by rotary evaporation, add film-forming agent PEG20000 and dispersing solvent 2-ethylhexanol to obtain TiO 2 Nano crystal slurry, TiO in the slurry 2 The weight content is: 16%, and the weight content of PEG20000 is: 4.5%.

[0025] 2) Preparation of TiO 2 Light scattering layer slurry: TiO with a particle size of 200nm 2 , PEG20000 and 2-ethylhexan...

Embodiment 3

[0029] 1) Preparation of TiO 2 Nanocrystalline slurry: add acetic acid dropwise in the tetraisopropyl titanate solution, the weight ratio of tetraisopropyl titanate and acetic acid is 4.8:1, then pour the mixed solution of tetraisopropyl titanate and acetic acid into the weight Stir in water containing 4.8 times the amount of tetraisopropyl titanate; add nitric acid whose weight is 0.09 times the amount of tetraisopropyl titanate, and dissolve at 80°C for 70 minutes to obtain a bluish transparent sol; Put the transparent sol in a titanium reactor, react at 240°C for 12 hours, remove water by rotary evaporation, add film-forming agent PEG20000 and dispersing solvent 2-ethylhexanol to obtain TiO 2 Nano crystal slurry, TiO in the slurry 2 The weight content is: 16%, and the weight content of PEG20000 is: 4.5%.

[0030] 2) Preparation of TiO 2 Light scattering layer slurry: TiO with a particle size of 200nm 2 , PEG20000 and 2-ethylhexanol are mixed, ultrasonically formed into ...

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Abstract

The invention discloses a preparation method used for a dye sensitive solar battery photo-anode, comprising the steps as follows: preparation of TiO2 nanometer crystal slurry, preparation of TiO2 light scattering layer slurry and coating the TiO2 nanometer crystal slurry and the TiO2 light scattering layer slurry on an FTO electrode so as to prepare the dye sensitive solar battery photo-anode by sintering process. By adopting the method of the invention, the raw material is easily to be gained, the reaction temperature is low; more particularly, the PEG20000 and 2-ethylhexanol are used for preparing the TiO2 nanometer crystal slurry, thus greatly reducing the cost and improving the energy conversion efficiency simultaneously.

Description

technical field [0001] The invention relates to a method for preparing a photoanode of a dye-sensitized solar cell, and belongs to the field of dye-sensitized solar cell materials. Background technique [0002] With the rapid increase of the world population, the demand for energy is also increasing. After the oil crisis broke out in the 1970s, the use of solar energy has been greatly developed. As a renewable energy source, solar energy has incomparable advantages over other energy sources. Monocrystalline silicon cells currently dominate the market for solar cells. As the latest achievement in the development of solar cells in recent years, dye-sensitized nanocrystalline thin-film solar cells (DSSC) represent a new development direction for solar cells. 1991 Switzerland et al. using bipyridyl ruthenium complex dyes and nanoporous TiO 2 The dye-sensitized nano-thin film solar cell prepared by the thin film obtained a photoelectric conversion efficiency of 7.1%. This b...

Claims

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Application Information

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IPC IPC(8): H01G9/20H01G9/042H01L31/18
CPCY02E10/542Y02P70/50
Inventor 路胜利毛建卫
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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