Dynamics of Photoinduced Charge Carriers in Metal-Halide Perovskites.

ABSTRACT: The measurement and description of the charge-carrier lifetime (τc) is crucial for the wide-ranging applications of lead-halide perovskites. We present time-resolved microwave-detected photoconductivity decay (TRMCD) measurements and a detailed analysis of the possible recombination mechanisms including trap-assisted, radiative, and Auger recombination. We prove that performing injection-dependent measurement is crucial in identifying the recombination mechanism. We present temperature and injection level dependent measurements in CsPbBr₃, which is the most common inorganic lead-halide perovskite. In this material, we observe the dominance of charge-carrier trapping, which results in ultra-long charge-carrier lifetimes. Although charge trapping can limit the effectiveness of mat

SUBMITTER: Bojtor A 

PROVIDER: S-EPMC11547212 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature