First Principles Analysis of Crystal Structure, Electronic and Optical Properties of CsSnI3–xBrx Perovskite for Photoelectric Applications

The crystal structure, electronic and optical properties of lead-free mixed halide inorganic perovskites, CsSnI3–xBrx (x = 0, 1, 2, 3), were studied within the framework density functional theory. effective electron-electron exchange correlation and, modified Becke–Johnson potential, used for calculations properties. calculated parameters states indicate that system has a property favorable application in solar cells.