Effect of Bimetallic and Halogen Ions on Performance in Inorganic Double Perovskites

Abstract

In the context of low-carbon environmental protection, the de-leading of perovskite materials has become a hot spot in research, and replacing the position of lead in perovskites with suitable low-toxic elements is particularly important for improving the toxicity of perovskites. The proposal of all-inorganic bimetallic perovskites provides a new direction for the crystal structure composition of perovskites, and the substitution of lead ions by bimetallic ions greatly reduces the toxicity of perovskites and improves the stability of the material. However, new problems have also arisen, bimetallic perovskites have indirect band gaps will reduce the optical properties of perovskites, adjusting the band gap of compounds has become the main problem in the study of bimetallic perovskites, this paper reviews the impact of adjusting different B-bit ions and X-bit halogen ions on the performance of perovskites, and makes an outlook on the development prospects of perovskites.