Preparation method of polyelectrolyte-based inorganic perovskite solar cell

Abstract

Disclosed is a preparation method of a polyelectrolyte-based inorganic perovskite solar cell. The preparation method comprises the following steps of (1) cleaning transparent FTO conductive glass; (2)preparing a titanium dioxide electron transfer layer; (3) preparing an inorganic perovskite CsBX3 / polyelectrolyte composite thin film on the titanium dioxide electron transfer layer obtained in the step (2); and (4) enabling a counter electrode to be deposited on a titanium dioxide / inorganic perovskite / polyelectrolyte composite thin film through thermal spraying. The invention provides the inorganic perovskite solar cell with a novel structure; a device is compounded with the polyelectrolyte with a charge transfer capacity and an inorganic perovskite light-absorbing material, so that a lightabsorption layer and a hole transport layer in a traditional device structure are replaced, and the number of interfaces of the whole device is reduced; and meanwhile, the crystallization and the filmforming performance of the inorganic perovskite material are improved through the polymer, and the charge transmission paths are increased, the charge recombination is effectively reduced, and meanwhile, the carrier transmission and separation are further accelerated.

Description

technical field [0001] The invention belongs to the field of organic photoelectric-solar cells, in particular to a method for preparing a polyelectrolyte-based inorganic perovskite solar cell. Background technique [0002] Perovskite solar cells have become a research hotspot in the field of optoelectronic devices due to their high efficiency, low cost, simple process, and environmental friendliness. In 2017, the conversion efficiency of this type of solar cell has reached 22.1%, showing a very high potential for development and application. Although as a new type of battery, the photoelectric conversion efficiency of perovskite solar cells has far exceeded other types of new concept solar cells, and there is still a lot of room for improvement, but its stability is far from the expectations of practical applications. far. The exploration of the stability of perovskite solar cells is still a research hotspot in this field. Traditional perovskite solar cells are mainly com...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, especially to overcome the problems of insufficient crystallization and film-forming performance of inorganic perovskite materials in the prior art, and serious interfacial recombination of inorganic perovskite solar cells, and provide a Preparation method of polyelectrolyte inorganic perovskite solar cells with good crystallization and film-forming properties and reduced charge recombination