Method for preparing photo-anode of dye-sensitized solar cell

A technology of solar cells and dye sensitization, which is applied in the field of photoanode preparation of dye-sensitized solar cells, can solve the problems of unsatisfactory practical application and low dye adsorption efficiency, and achieve improved transmission rate and photoelectric conversion efficiency, good photoactivity, Avoid the effect of reunion

Inactive Publication Date: 2013-11-06
NAT UNIV OF DEFENSE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the photoanode in dye-sensitized solar cells mainly adopts dense titanium dioxide film, which has low dye adsorption efficiency and cannot meet practical applications.

Method used

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  • Method for preparing photo-anode of dye-sensitized solar cell

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Effect test

Embodiment 1

[0030] (1) Solution preparation: Add 5mL butyl titanate to a mixture consisting of 3mL hydrochloric acid and 30mL absolute ethanol, then add 1g P123;

[0031] (2) Solution treatment: Stir the solution prepared in step (1) by magnetic force for 5 minutes to make titanium sol, and put it in the refrigerator for aging;

[0032] (3) Film pulling: After aging the titanium sol for 2 hours, take it out, pull the substrate in the titanium sol at a constant speed of 5cm / min, pull the film 1-10 times, and put the conductive glass in the refrigerator for aging. Described substrate is conductive glass; Wherein, the time interval of each pulling film is 10min;

[0033] (4) Annealing: After aging the substrate for 12 hours, take it out and put it into the muffle furnace for annealing; wherein, the annealing mode of the muffle furnace is as follows: 3o C / min continues to heat up, and the temperature rises to 100o C for 3 hours, and then With furnace cooling, the surface is covered with tita...

Embodiment 2

[0036] (1) Solution preparation: Add 10mL butyl titanate to a mixture consisting of 6mL hydrochloric acid and 80mL absolute ethanol, then add 5g P123;

[0037] (2) Solution treatment: Stir the solution prepared in step (1) by magnetic force for 20 minutes to make titanium sol, and put it in the refrigerator for aging;

[0038] (3) Film pulling: After aging the titanium sol for 8 hours, take it out, pull the substrate in the titanium sol at a constant speed of 20cm / min, pull the film 1-10 times, and put the conductive glass in the refrigerator for aging. Described substrate is conductive glass; Wherein, the time interval of each pulling film is 10min;

[0039] (4) Annealing: take out the substrate after aging for 30 hours, and put it into the muffle furnace for annealing; wherein, the annealing mode of the muffle furnace is as follows: 5o C / min continuous heating, the temperature rises to 300o C, then keeps the temperature for 10h, and then With furnace cooling, the surface is...

Embodiment 3

[0042] (1) Solution preparation: Add 8.6mL butyl titanate (TEOT) to a mixed solution consisting of 5.4mL hydrochloric acid and 50.6mL absolute ethanol, and then add 2g P123.

[0043] (2) Solution treatment: Stir the solution prepared in step (1) by magnetic force for 10 minutes to make titanium sol, and put it in the refrigerator for aging;

[0044] (3) Film pulling: After aging the titanium sol for 6 hours, take it out, pull the substrate in the titanium sol at a constant speed of 12cm / min, pull the film 6 times, and put the substrate in the refrigerator for aging; The time interval of the film is 10min;

[0045] (4) Annealing: take out the substrate after aging for 48 hours, and put it into the muffle furnace for annealing; wherein, the annealing mode of the muffle furnace is as follows: 1oC / min continues to heat up, the temperature rises to 500oC and then keeps the temperature for 6 hours, and then Cooling with the furnace; that is, the surface is covered with titanium dio...

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Abstract

The invention discloses a method for preparing a photo-anode of a dye-sensitized solar cell. An ordered mesoporous titanium dioxide thin film of a nanometer porous structure is adopted as the photo-anode of the dye-sensitized solar cell. The method comprises the steps of preparing butyl titanate, hydrochloric acid and anhydrous ethanol solution, enabling solution to become colloidal sol, conducting aging treatment, drawing the film, annealing, and preparing the dye-sensitized solar cell. The mesoporous titanium dioxide thin film obtained through the method is provided with even and ordered pore passages, has a high specific surface area and relatively good heat stability, can greatly improve the adsorption rate of dye sensitizer molecules and avoid the agglomeration of the dye sensitizer molecules, and enables the dye sensitizer molecules to show good optical activity. When a substrate covered by the thin film is used as the photo-anode of the dye-sensitized solar cell, the photo-anode can be improved in absorbing sunlight, and the transmission rate of electrons and photoelectric conversion efficiency can be improved, so that the performance of the battery can be improved.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a method for preparing a photoanode of a dye-sensitized solar cell. Background technique [0002] With the massive consumption and use of traditional energy (coal, oil, natural gas and other mineral resources), the exploration of renewable energy has become the focus of attention of countries all over the world. Among the renewable energy currently being developed, solar energy, as an inexhaustible, inexhaustible, safe, reliable, non-polluting, and unrestricted by geographical environment, is receiving more and more attention. If human beings can effectively use solar energy, it will not only solve the energy consumption problem required for human survival and development, but also solve the ecological environmental protection problem required for human survival and development. The development of solar cells is one of the most effective ways to make full use of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/042H01G9/20
CPCY02E10/542
Inventor 王飞张学骜方靖岳邵铮铮常胜利
Owner NAT UNIV OF DEFENSE TECH
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