Temperature dependent threshold for amplified emission from hybrid lead perovskite films

TL;DR

This study investigates how the optical amplification threshold in hybrid lead perovskite films varies with temperature, revealing exponential increases and critical temperature sequences across different compositions.

Contribution

It provides a systematic comparison of temperature-dependent amplification behavior in various hybrid perovskite films, enhancing understanding of their fundamental emission mechanisms.

Findings

Amplification threshold increases exponentially with temperature.

Critical temperatures follow the sequence FA+I < MA+I < FA+Br < MA+Br.

Understanding of temperature effects on hybrid perovskite emission mechanisms.

Abstract

The optical amplification emission of hybrid lead perovskite attracted great research interests. We systematically examined and compared temperature dependent optical amplification behavior of a series of organic-inorganic hybrid perovskite films of (MA/FA)Pb(Br/I)3. The optical amplification threshold of the films showed considerable exponential increase towards the temperature increasing. We figured out that the critical temperature for the four films presented a sequence of FA+I < MA+I < FA+Br < MA+Br. Our systematical study is crucial for in depth understanding the fundamental mechanism of amplified emission of hybrid perovskite materials.