Method for preparing titanium dioxide films for dye-sensitized solar battery

A technology of solar cells and titanium dioxide, applied in circuits, capacitors, photovoltaic power generation, etc., can solve the problems of complex process, time-consuming and labor-consuming, thin film formation, etc., and achieve the effect of simple process, easy operation, and large specific surface area

Active Publication Date: 2010-07-07
ENN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is complex in process, thinner in film formation, time-consuming and labor-intensive

Method used

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  • Method for preparing titanium dioxide films for dye-sensitized solar battery
  • Method for preparing titanium dioxide films for dye-sensitized solar battery
  • Method for preparing titanium dioxide films for dye-sensitized solar battery

Examples

Experimental program
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Embodiment 1

[0032] Heat 12g of ethylene glycol to 60°C, add 2g of isopropyl titanate (Alfa Aesar Company) while stirring, continue to add 10g of citric acid and raise the temperature to 90°C, continue stirring This sol 0.5 hour until it becomes transparent, promptly obtains TiO 2 Sol. As measured by transmission electron microscopy (TEM) (TECNAI-G2, FEI), the TiO 2 Sol TiO 2 The particle size is 5-10nm. 1g of this sol and 6g of titanium dioxide powder (P25 powder, Degussa Company (Degussa Company)) with an average particle diameter of 6g were mixed and ground evenly, and 19g of terpineol (analytical grade, Tianjin Huadong Reagent Factory) and 30g of 10 % by weight ethyl cellulose in ethanol. Continue to grind for 1 hour to get TiO 2 slurry. TiO 2 The slurry was printed on conductive glass (NSG FTO-14, Wuhan Geo Instruments Co., Ltd.) by screen printing, and the effective area of ​​the film was 0.2 cm 2 . After drying the conductive glass at 125°C for 5 minutes, it was placed in a...

Embodiment 2

[0036] Heat 12g of ethylene glycol to 60°C, add 2g of isopropyl titanate (Alfa Aesar Company) while stirring, continue to add 10g of citric acid and raise the temperature to 90°C, continue stirring This sol 0.5 hour until it becomes transparent, promptly obtains TiO 2 Sol. As measured by transmission electron microscopy (TEM) (TECNAI-G2, FEI), the TiO 2 Sol TiO 2 The particle size is 5-10nm. 2g of this sol and 6g of titanium dioxide powder (P25 powder, Degussa Company (Degussa Company)) with an average particle diameter of 6g were mixed and ground evenly, and 18g of terpineol (analytical grade, Tianjin Huadong Reagent Factory) and 30g of 10 % by weight ethyl cellulose in ethanol. Continue to grind for 1 hour to get TiO 2 slurry. TiO 2 The slurry was printed on conductive glass (NSG FTO-14, Wuhan Geo Instruments Co., Ltd.) by screen printing, and the effective area of ​​the film was 0.2 cm 2 . After drying the conductive glass at 125°C for 5 minutes, it was placed in a...

Embodiment 3

[0039] Heat 12g of ethylene glycol to 60°C, add 2g of isopropyl titanate (Alfa Aesar Company) while stirring, continue to add 10g of citric acid and raise the temperature to 90°C, continue stirring This sol 0.5 hour until it becomes transparent, promptly obtains TiO 2 Sol. As measured by transmission electron microscopy (TEM) (TECNAI-G2, FEI), the TiO 2 Sol TiO 2 The particle size is 5-10nm. 3g of this sol and 6g of titanium dioxide powder (P25 powder, Degussa Company (Degussa Company)) with an average particle size of 6g were mixed and ground evenly, and 17g of terpineol (analytical grade, Tianjin Huadong Reagent Factory) and 30g of 10 % by weight ethyl cellulose in ethanol. Continue to grind for 1 hour to get TiO 2 slurry. TiO 2 The slurry is printed on conductive glass (NSG FTO-14, Wuhan Geo Instruments Co., Ltd.) by screen printing, and the effective area of ​​the film is 0.2cm 2 . After drying the conductive glass at 125°C for 5 minutes, it was placed in a tube f...

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Abstract

The invention relates to a method for preparing titanium dioxide films for a dye-sensitized solar battery, comprising the following steps: (a) titanium dioxide sol with 1-10 wt percent of titanium dioxide, 5-10nm of grain size and 10-100mg/mL of concentration and titanium dioxide powder with 5-15 wt percent of titanium dioxide and 20-40nm of grain size are uniformly ground, 80-90 wt percent of pore-forming agent is added, and the obtained 100wt percent of mixture are grounded for 0.5-2 hours; (b) titanium dioxide slurry is coated on conductive glass and is dried for 5-15 minutes at 100-130 DEG C; and (c) the conductive glass coated with the titanium dioxide slurry is sintered for 0.5-2 hours at 450-500 DEG C; by adopting the method in the invention, the process is simple, the operation is easy, the preparation period is short, thereby being beneficial to industrialization; in addition, the photoelectricity conversion efficiency of the dye-sensitized solar battery assembled by the titanium dioxide films is high by adopting the method.

Description

technical field [0001] The invention relates to a method for preparing a titanium dioxide thin film for a dye-sensitized solar cell (DSC), in particular to an easy-to-implement method for preparing a titanium dioxide thin film for a dye-sensitized solar cell that can greatly improve battery efficiency Methods. Background technique [0002] Dye-sensitized solar cells have attracted widespread attention from all over the world due to their advantages of environmental protection, high efficiency, low cost, and long life. At present, the highest photoelectric conversion efficiency of DSC has exceeded 11%, which is close to the level of commercial polycrystalline silicon solar cells, and its production cost is only 1 / 5-1 / 10 of silicon solar cells, so it has become a very advantageous third generation solar cells. [0003] DSC is usually composed of porous nano-titanium dioxide (TiO 2 ) thin film photoanode, electrolyte solution and counter electrode. When sunlight irradiates ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/042H01G9/20H01M14/00H01L51/48
CPCH01G9/2059Y02E10/542H01G9/2031
Inventor 李晓洁赵云峰丁天朋周祥勇赵伟
Owner ENN SCI & TECH DEV
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