High stability perovskite film and manufacturing method thereof

Abstract

The invention discloses a high stability perovskite film and a manufacturing method thereof. The high stability perovskite film comprises a perovskite light absorbing layer and a hydrophobic interfacelayer which is formed by modifying a benzoyl cyanide solution and wraps the outer surface of the perovskite light absorbing layer. The manufacturing method comprises the following steps of preparingbenzoyl cyanide into a surface modification solution; and immersing the perovskite film in the surface modification solution for 30 to 1800 seconds, and carrying out annealing processing and drying at70 to 200 DEG C. In the invention, immersive surface modification is performed on a conventional perovskite film, the perovskite light absorbing layer can be passivated, the quality of the perovskitelight absorbing layer is improved, and the defect density of the perovskite light absorbing layer is reduced; the photoelectric conversion efficiency of a perovskite solar cell manufactured by the high stability perovskite film is increased; and benzoyl cyanide is taken as a surface modification material so that the outer surface of the perovskite light absorbing layer forms the hydrophobic interface layer, which is good for enhancing the hydrophobicity of the high stability perovskite film, and then the stability of the manufactured perovskite solar cell is increased.

Description

technical field [0001] The invention relates to the technical field of perovskite solar cells, in particular to a high-stability perovskite film and a preparation method thereof. Background technique [0002] At present, non-renewable energy sources such as coal and petroleum are still the main energy sources in today's society, but the environmental pollution caused by their extensive exploitation and widespread use has become increasingly prominent, and the development of renewable clean energy is imperative. Among clean energy sources, such as wind energy and water energy are limited by natural and geographical conditions, and nuclear energy has potential leakage hazards, solar energy is huge, inexhaustible and inexhaustible, so it is an ideal energy source. Therefore, as an effective way to utilize solar energy resources, solar cells have always been the focus of researchers. [0003] In the development process of solar cells, perovskite solar cells have developed rapid...

AI Technical Summary

Problems solved by technology

[0005] With the strong support of the National Natural Science Foundation of China (51672094, 51661135023), the National Key Research and Development Project (2016YFC0205002) and the Independent Innovation Research Fund of Huazhong University of Science and Technology (2016JCTD111), the present invention provides a high-stability perovskite film and its preparation method , to solve the technical problem of poor stability of perovskite thin films in the prior art

Images