Origin of the low-energy tail in the photoluminescence spectrum of CsPbBr₃ nanoplatelets: a femtosecond transient absorption spectroscopic study

Abstract

CsPbBr3 nanoplatelets (NPLs), as one of two-dimensional lead halide perovskite, has been intensively investigated due to its outstanding photophysical and photoelectric properties. However, there remains unclear fundamental issues on its...