Preparation method of liquid crystal pedot counter electrode for dye-sensitized solar cell

Abstract

The invention belongs to the technical field of dye-sensitized solar cells, in particular to a method for preparing a liquid crystal PEDOT counter electrode for dye-sensitized solar cells. The present invention prepares liquid crystal PEDOT counter electrode by electropolymerization method, and grows it on the conductive substrate in situ, and directly applies it to dye-sensitized solar cells, combined with non-corrosive electrolyte, it can obtain better than pyrolytic platinum counter electrode. energy conversion efficiency. The process of the invention is simple, and the prepared non-platinum counter electrode not only has high catalytic activity, but also is cheap, which greatly reduces the cost of the counter electrode, thereby reducing the overall cost of the dye-sensitized solar cell, and can be applied to large-scale dye-sensitized solar energy Industrial production of batteries.

Description

technical field [0001] The invention belongs to the technical field of dye-sensitized solar cells, and in particular relates to a method for preparing a liquid crystal PEDOT counter electrode applied to dye-sensitized solar cells. Background technique [0002] Since Professor M.Grötzel introduced the concept of nanoporous into dye-sensitized wide bandgap TiO in 1991 2 In semiconductor research, since dye-sensitized solar cells (DSSCs) with an energy conversion efficiency of 7.1% were obtained (Nature, 1991, 353, 737), DSSCs are known for their low cost, relatively simple manufacturing process, and high photoelectric conversion efficiency. And other characteristics, quickly received widespread attention from the international academic and industrial circles. [0003] DSSCs mainly consist of dye-sensitized porous semiconductor nanocrystal films, electrolytes, and counter electrodes. The dye molecules are excited by the light, electrons are injected into the conduction band o...

AI Technical Summary

Problems solved by technology

Platinum counter electrodes are usually prepared by magnetron sputtering (Electrochimi.Acta., 2001, 46, 3457) and thermal decomposition of chloroplatinic acid (J. Electrochem. Soc., 1997, 144, 876), although there are better Catalytic performance and comprehensive performance, but because platinum is a noble metal, and the preparation method consumes high energy, these methods have obvious limitations if used in large-scale production

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