Frontier applications of perovskites beyond photovoltaics

Perovskites have been widely utilized as active materials in various optoelectronic devices, e.g. light-emitting diodes（LEDs）, photodetectors（PDs）, and solar cells（SCs）, etc., due to their facile processability and outstanding optoelectronic properties, like high optical absorption coefficients(～10~5 cm -1 ),