Fig. 2
From: Switching excitonic recombination and carrier trapping in cesium lead halide perovskites by air
Optical characterization of CsPbBr3. a Temperature-dependent photoluminescence (PL) spectra of CsPbBr3. b Excitation power-dependent PL intensity from CsPbBr3. c Reflection spectra of CsPbBr3. d PL decay dynamics of CsPbBr3. e Two-photon excited PL spectra of CsPbBr3. f Two-photon excited PL decay dynamics of CsPbBr3
