Disentangling Hot Carrier Decay and the Nature of Low-n to High-n Transfer Processes in Quasi-Two-Dimensional Layered Perovskites.

ABSTRACT: Quasi-two-dimensional (2D) metal halide perovskites (MHPs) are promising photovoltaic (PV) materials because of their impressive optical and optoelectronic properties and improved stability compared to their 3D counterparts. The presence of domains with varying numbers of inorganic layers between the organic spacers (n-phases), each with different bandgaps, makes the photoinduced carrier dynamics in films of these materials complex and intriguing. Existing interpretations of the ultrafast femto- or picosecond spectroscopy data have been inconsistent, most of them focusing either on exciton/charge transfer from low-n to high-n phases or on hot carrier cooling, but not combined. Here, we present a comprehensive study of the carrier dynamics in the Dion-Jacobson type (PDM

SUBMITTER: Einhaus LM 

PROVIDER: S-EPMC10711792 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature