Tuning the optical absorption and emission of vacancy-ordered double perovskites
Vacancy-ordered double perovskites of the formula A2MX6 (where A is a +1 cation, M is a +4 metal, and X is a halide ion) offer improved ambient stability over other AMX3 perovskites and reduced toxicity compared to those containing lead. Furthermore, their broad, highly Stokes-shifted emission makes them particularly w...