The model of photoswitching in lead-halide perovskite microcrystals

TL;DR

This paper proposes a theoretical model explaining the all-optical photoswitching effect in lead-halide perovskite microcrystals, accounting for charge dynamics and trap states, successfully reproducing observed phenomena.

Contribution

It introduces a comprehensive theoretical framework that models charge carrier kinetics and trap state dynamics in lead-halide perovskite microcrystals for the first time.

Findings

Model reproduces key photoswitching features

Accounts for spatial charge recombination

Includes trap state creation and destruction

Abstract

A theoretical model for the recently discovered effect of all-optical photoswitching in lead tribromide perovskite single microcrystals is proposed. The model takes into account the spatially distributed kinetics of the charge carrier recombination and the creation/destruction of trap states. It successfully reproduces the key features of the photoswitching phenomenon.