Resonant multiple-phonon absorption causes efficient anti-Stokes photoluminescence in CsPbBr${}_3$ nanocrystals

Zhuoming Zhang, Sushrut Ghonge, Yang Ding +5

Lead-halide perovskite nanocrystals such as CsPbBr${}_3$, exhibit efficient photoluminescence (PL) up-conversion, also referred to as anti-Stokes photoluminescence (ASPL). This is a…