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Dye-sensitized solar cell

A technology for solar cells and dye sensitization, applied in the field of dye-sensitized solar cells, can solve the problems of low photoelectric conversion efficiency of dye-sensitized solar cells, and achieve the effects of high repeatability, inhibition of electron recombination, and large specific surface area

Inactive Publication Date: 2013-12-04
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the prior art with untreated SnO 2 The problem of low photoelectric conversion efficiency of dye-sensitized solar cells with nano-films as photoanodes, the present invention prepares SnO doped with saponite 2 Nanofilm or TiCl 4 Post-treated SnO 2 Nanofilm or TiCl 4 Post-treated doped saponite SnO 2 Nano-film and use it as a photoanode, in order to effectively improve the photoelectric conversion efficiency of dye-sensitized solar cells

Method used

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Examples

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Embodiment 1

[0039] This embodiment prepares untreated SnO as follows 2 nano film

[0040] a. Preparation of SnO 2 powder:

[0041] a1, the deionized water of 90ml is mixed with the absolute ethanol of 10ml, and the sodium citrate dihydrate of 1.2g tin sulfate and 4.5g is added therein to obtain mixed solution X;

[0042] a2. Put the mixed solution X into the reaction kettle and heat it to the reaction temperature of 160°C, and maintain the reaction temperature for 12 hours under normal pressure. After the reaction is completed, the temperature in the reaction kettle is naturally cooled to room temperature, and the powder is obtained as the lower layer. The above supernatant is the layered substance of the upper layer, and the supernatant is sucked out;

[0043] a3. Centrifuge and wash the powder with deionized water and absolute ethanol in sequence, then put the cleaned powder into a drying oven and dry at 70°C for 2 hours to obtain a dry powder;

[0044] a4. Calcining the dry powder ...

Embodiment 2

[0055] This example prepares SnO doped with saponite as follows 2 Nano film:

[0056] a. Preparation of SnO 2 powder:

[0057] a1, the deionized water of 90ml is mixed with the absolute ethanol of 10ml, and the sodium citrate dihydrate of 1.2g tin sulfate and 4.5g is added therein to obtain mixed solution X;

[0058] a2. Put the mixed solution X into the reaction kettle and heat it to the reaction temperature of 160°C, and maintain the reaction temperature for 12 hours under normal pressure. After the reaction is completed, the temperature in the high-pressure reaction kettle is naturally cooled to room temperature, and the powder is obtained as the lower layer. , The above supernatant is the layered substance of the upper layer, and the supernatant is sucked out;

[0059] a3. Centrifuge and wash the powder with deionized water and absolute ethanol in sequence, then put the cleaned powder into a drying oven and dry at 70°C for 2 hours to obtain a dry powder;

[0060] a4. C...

Embodiment 3

[0070] This embodiment prepares TiCl by the following steps 4 Post-treated SnO 2 Nano film:

[0071] A, repeat step a, step b and step c of embodiment 1 to obtain unprocessed SnO 2 nano film;

[0072] b. Untreated SnO 2 The nano film is immersed in TiCl with a concentration of 75-150mmol / L (the optimal value is 100mmol / L) and a temperature of 70°C 4 Heat treatment in aqueous solution for 30 minutes, then wash SnO with deionized water 2 The surface of the nanometer film is dried and placed in a muffle furnace for at least 120 minutes at 500 ° C to obtain a TiCl 4 Post-treated SnO 2 nano film. The specific sintering curves are sintering at 150°C for 10 minutes, sintering at 325°C for 10 minutes, sintering at 375°C for 10 minutes, sintering at 450°C for 30 minutes, and sintering at 500°C for 120 minutes.

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Abstract

The invention discloses a dye-sensitized solar cell. The dye-sensitized solar cell comprises a photo-anode, a dye sensitizer, a redox electrolyte and a counter electrode, wherein the photo-electrode adopts a SnO2 nanometer film; the SnO2 nanometer film is a soapstone-doping SnO2 nanometer film, a SnO2 nanometer film subjected to TiCl4 after-treatment or a soapstone-doping SnO2 nanometer film subjected to the TiCl4 after-treatment. According to the invention, the soapstone-doping SnO2 nanometer film, the SnO2 nanometer film subjected to the TiCl4 after-treatment or the soapstone-doping SnO2 nanometer film subjected to the TiCl4 after-treatment is regarded as the photo-anode for the preparation of the dye-sensitized solar cell, so that the photoelectric conversion efficiency of the dye-sensitized solar cell is improved efficiently.

Description

technical field [0001] The present invention relates to dye-sensitized solar cells, more particularly to SnO 2 Nanofilm as photoanode for dye-sensitized solar cells. Background technique [0002] Fossil energy is non-renewable energy, which is gradually exhausted, especially in recent years, with the rapid development of emerging countries, the demand for energy has greatly increased. At the same time, the use of fossil energy produces a large amount of greenhouse gases, causing global climate change. Replacing traditional fossil energy with solar energy is the best way to solve the energy crisis and protect the environment. In recent years, solar cells have developed very rapidly and have been widely used in many fields of the national economy. However, at present, the high cost of solar cells has always been the bottleneck for the promotion and use of solar cells. Therefore, the production of low-cost, stable, and high-efficiency solar cells is the research focus of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/042B82Y30/00
CPCY02E10/542Y02E10/549
Inventor 徐进章秦胜贤牛海红马琼万磊曾美义尚鑫邹鹏
Owner HEFEI UNIV OF TECH
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