Method for preparing copper gallium sulfide photoelectric thin film from copper chloride

Abstract

The invention provides a method for preparing a copper gallium sulfide photoelectric thin film from copper chloride, and belongs to the technical field of preparation of photoelectric thin films for solar cells. The copper gallium sulfide photoelectric thin film is obtained through the following steps of: firstly, cleaning a glass substrate and then putting CuCl2.2H2O, Ga(NO3)3.xH2O and CH3CSNH2 into a solvent for mixing evenly; obtaining a precursor thin film on a glass sheet through a spin-coating method, drying the precursor thin film and putting the precursor thin film into a closed container with hydrazine hydrate; preventing a precursor thin film sample from being in contact with the hydrazine hydrate and arranging the closed container with the sample into an oven for heating and heat preservation treatment; and finally taking out the sample to soak for 24 hours and then drying the sample to obtain the copper gallium sulfide photoelectric thin film. A high-temperature and high-vacuum condition is not needed; the method is low in demands on instruments and equipment, low in production cost, high in production efficiency and easy to operate; the obtained copper gallium sulfide photoelectric thin film has relatively good continuity and uniformity; the main phase is a CuGaS2 phase; by the novel technology, the component and the structure of a target product are easy to control; and a low-cost production method capable of achieving industrialization is provided for preparation of the high-performance copper gallium sulfide photoelectric thin film.

Description

technical field [0001] The invention belongs to the technical field of photoelectric film preparation for solar cells, and in particular relates to a method for preparing copper gallium sulfur photoelectric film from copper chloride. Background technique [0002] With the development of society and economy, fossil fuels such as coal, oil, and natural gas have been applied to all aspects of production and life. The continuous use of fossil fuels has reduced the resources on the earth. On the other hand, the continuous use of fossil fuels has also brought about environmental impacts, especially in terms of the greenhouse effect. Therefore, the development and utilization of clean and renewable energy is important for environmental protection, sustainable economic development and building a harmonious society. meaning. Photovoltaic power generation has the advantages of safety and reliability, no noise, no pollution, less constraints, low failure rate, and easy maintenance. So...

AI Technical Summary

Problems solved by technology

Copper gallium sulfide is a very promising photoelectric thin film material, but the existing process route is complicated, the preparation cost is high, and it is difficult to make a thin film material with a preferred orientation. Therefore, it is also necessary to explore a low-cost preparation process that can make the film appear preferred orientation growth