First-principles study of lead-free Cs2RbCoX6 (X = F, Cl, Br, I) halide perovskites for optoelectronic devices
In contrast to traditional lead-based perovskites, double perovskites are receiving considerable attention owing to their highly tunable photovoltaic performance and remarkable stability, which can be further enhanced through compositional engineering. We have theoretically investigated the structural, mechanical, dyna...