Hot carriers and hot phonons in MAPbI3 under pulsed excitation

Abstract

A deeper understanding of the physical properties of highly promising organic–inorganic hybrid materials, such as methylammonium lead iodide (MAPbI₃), is crucial for advancing high-performance optoelectronic devices. This perspective examines the interaction between such typical materials with pulsed lasers, focusing on the dynamics of hot electrons and hot phonons. Various models describing carrier cooling are discussed, with emphasis on the role of non-equilibrium phonons and related computational approaches. The behavior of longitudinal optical (LO) phonons and the mechanisms governing lattice equilibrium remain incompletely understood. Insights from recent experiments may help develop a comprehensive model of hot carrier dynamics. By describing the dynamics of hot electrons and hot phonons, this study aims to identify methods to slow down the relaxation of hot carriers.