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Modification of anthocyanins for dye-sensitized solar cells

A solar cell and dye sensitization technology, which is applied in the field of solar cell material preparation, can solve the problem of low adsorption capacity and achieve the effects of easy reaction control, good market development prospects and abundant raw materials

Inactive Publication Date: 2020-01-07
QINGHAI UNIVERSITY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to solve existing anthocyanin sensitizer in TiO 2 The adsorption amount on the film is not high, and a method for modifying natural anthocyanins is proposed to improve the performance of anthocyanin-sensitized solar cells

Method used

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  • Modification of anthocyanins for dye-sensitized solar cells

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Embodiment 1

[0029] Anthocyanin modification method for dye-sensitized solar cells, which comprises the following steps:

[0030] 1) Potassium permanganate solution was prepared and calibrated to measure KMnO 4 The concentration is:

[0031] C(KMnO 4 )=0.0210mol / L;

[0032] 2) Using distilled water as a solvent, the concentration of the anthocyanins prepared is: 0.2 g / L; the anthocyanins are purple sweet potato pigments.

[0033] 3) Using distilled water as a solvent, prepare a 0.01mol / L hydrochloric acid solution;

[0034] 4) Using distilled water as a solvent, prepare a 0.01mol / L sodium hydroxide solution;

[0035] 5) Take 10 ml of potassium permanganate solution prepared in step 1), add 5 ml of hydrochloric acid solution prepared in step 3), and stir on a magnetic stirrer at a speed of 300 rpm.

[0036] 6) Take 10ml of 0.2g / L purple sweet potato pigment solution, slowly add it into the stirring acidic potassium permanganate solution in step 5), and react at room temperature for 45m...

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Abstract

The invention relates to an anthocyanin modification method for a dye sensitization solar cell, which belongs to the technical field of the preparation of a solar cell material. The method comprises the following steps: under an acidic condition, performing the strong oxidization reaction on anthocyanin by using potassium permanganate, wherein a primary hydroxyl group is highly oxidized into a carboxyl, so that the adsorption amount of the anthocyanin on a TiO2 film can be increased. The invention first provides the method for highly oxidizing the anthocyanin for the dye sensitization solar cell, so that the adsorption amount of the dye can be increased, and the photoelectric performance of the dye sensitization solar cell can be improved. The anthocyanin modification method has the characteristics that the preparation method is simple and easy, the reaction is easy to control, the raw material is rich, and the like.

Description

technical field [0001] The invention relates to an anthocyanin modification method for dye-sensitized solar cells, and belongs to the technical field of solar cell material preparation. Background technique [0002] Dye-sensitized solar cell (DSC for short), also known as "Gratzel" battery, is a new type of high-efficiency solar cell invented by the team of Professor M Gratzel of the Swiss Federal Institute of Technology in Lausanne (EPFL) in 1991. The battery is not only simple in manufacturing process, but also can be made into bendable and colored ones, which can be used for exterior walls of buildings and decorations. The theoretical conversion efficiency of DSC is very high, up to 33%, exceeding the theoretical conversion efficiency of monocrystalline silicon-based solar cells. Based on the above reasons, DSC is therefore considered to be a strong competitor and substitute for traditional silicon-based batteries, attracting more and more research enthusiasm in the glob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20
CPCH01G9/2059Y02E10/542
Inventor 杨桂军王刚林红陈慧媛南辉韦浩民张万军李春梅
Owner QINGHAI UNIVERSITY