Research Progress of Green Solvent in CsPbBr(3) Perovskite Solar Cells

In optoelectronic applications, all-Brominated inorganic perovskite CsPbBr(3) solar cells have received a great deal of attention because of their remarkable stability and simplicity of production. Most of the solvents used in CsPbBr(3) perovskite solar cells are toxic, which primarily hinders the commercialization of the products. In this review, we introduce the crystal structure and fundamental properties of CsPbBr(3) materials and the device structure of perovskite cells, summarize the research progress of green solvents for CsPbBr(3) PSCs in recent years from mono-green solvent systems to all-green solvent systems, and discuss the approaches to improving the PCE of CsPbBr(3) PSCs, intending to facilitate the sustainable development of CsPbBr(3) perovskite solar cells. Finally, we survey the future of green solvents in the area of CsPbBr(3) perovskite solar cells.