Abstract:
With the development of the economy, mankind's demand for energy is increasing. As traditional fossil energy is facing problems such as energy depletion and environmental pollution, solar energy has great development prospects as a renewable energy source, and the research of solar cells has become a research focus. However, the factors that restrict the performance of solar cells still exist, such as interface problems, stability problems, etc. By introducing a buffer layer with a suitable energy band structure between the carrier transport layer/electrode and the carrier transport layer/light absorption layer, it can effectively solve the problem of energy band mismatch between the interface, carrier recombination, chemical reaction, etc. This paper summarized the research results of zinc sulphide (ZnS) as a buffer layer in different solar cells, and analysed different methods to prepared the ZnS. Finally, the difference between ZnS and its impact on battery performance, and its application prospects in solar cells are forecasted.