Time-Resolved Spectroscopy for the Study of Perovskite

Carrier behavior in halide perovskite is a critical factor impacting on the properties of material, and finally determines the performance of perovskite photovoltaic and luminescent devices. It is necessary to clarify the mechanism of carrier relaxation and migration at extremely microscopic time scale. Time-resolved spectroscopy provides a powerful means for the detection of ultrafast processes, which has been an indispensable technique in research on perovskites. In this review, we will elaborate the basic principle and system implementation of time-resolved spectroscopy, and introduce the applications for carrier dynamics in perovskite.