First-principles study on the elastic, electronic and optical properties of all-inorganic halide perovskite solid solutions of CsPb(Br1−xClx)3 within the virtual crystal approximation

We investigate the variation of structural, elastic, electronic, and optical properties of all-inorganic bromide and chloride perovskite solid solutions of CsPb(Br 1− x Cl x ) 3 using first-principles calculations within the virtual crystal approximation.