Blanket type light anode for dye sensitized solar cell and preparation method thereof

Abstract

The invention relates to a blanket type light anode for a dye sensitized solar cell and a preparation method thereof, which belong to the technical field of solar cells. In the blanket type light anode for the dye sensitized solar cell, a layer of blanket type structure, namely a titanium dioxide nano linear array film is increased on the basis of the conventional multiporous titanium dioxide nanocrystalline film light anode. Due to the existence of a titanium dioxide nano linear array, more fuel sensitizing agents can be adsorbed; at the same time, because multiporous titanium dioxide nanocrystal interfaces are greatly reduced, crystal boundary potential barriers which need to be overcome during electronic transmission are reduced to accelerate the effective separation of photoelectron-cavity pairs in dye molecules; the multiporous titanium dioxide nanocrystalline film at the bottom can effectively reduce leakage current and dark current; and the blanket type light anode for the dye sensitized solar cell provided by the invention has higher photoelectric conversion efficiency. The preparation method has the advantages of simpleness, mild reaction condition and safe and reliable process.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and relates to a photoanode (working electrode) of a dye-sensitized solar cell and a preparation method thereof. Background technique [0002] Energy is the most basic driving force for the development and economic growth of the entire world, and the basis for human survival. At present, humans mainly use primary energy, including coal, oil, natural gas and other resources. After nearly a hundred years of human consumption, these non-renewable resources have been consumed in large quantities and are facing the danger of being exhausted. It is imperative to develop new renewable energy sources, which mainly include solar energy, wind energy, geothermal energy, biomass energy, hydrogen energy, etc., among which solar energy has the greatest application potential. One of the important ways to develop and utilize solar energy is to use solar cells to convert light energy into electrical energy. ...

AI Technical Summary

Problems solved by technology

In the existing dye-sensitized solar cell photoanode, in the porous titanium dioxide nanocrystalline film responsible for charge separation and electron transport, due to the existence of a large amount of interface resistance between titanium dioxide nanocrystalline grains, an energy barrier for electron transfer will be formed, limiting The rapid migration of oxide conduction band electrons in the oxide porous network film makes the photogenerated electron-hole pairs in the dye molecules unable to be effectively separated, which restricts the improvement of the photoelectric conversion efficiency of dye-sensitized solar cells.

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