Anujoy Biswas

Resolving the true ground-state structure and origin of high-symmetry instability in lead-free perovskite RbSrI 3

Inorganic halide perovskite RbSrI 3 has recently attracted attention as a lead-free material for radiation detection and optoelectronic applications. However, most theoretical studies have assumed an ideal cubic structure as the ground-state phase, despite the strong tendency of halide perovskites toward polymorphism a...