What question did this study set out to answer?

The aim is to investigate how temperature affects amplified spontaneous emission and photoluminescence in MAPbBr3 thin films during phase transitions.

February 6, 2026Open Access

Amplified spontaneous emission dependence on temperature-induced crystalline phase transition in a solution processed MAPbBr 3 thin film

Key Points

The aim is to investigate how temperature affects amplified spontaneous emission and photoluminescence in MAPbBr3 thin films during phase transitions.
Analyzed the temperature dependence of amplified spontaneous emission (ASE) and photoluminescence (PL)
Conducted measurements in the temperature range of 20–300 K during cooling
Observed phase transitions: orthorhombic to tetragonal and tetragonal to cubic
ASE and PL show notable changes with temperature variations
Thermally activated non-radiative processes play a significant role
Phase transitions impact the effectiveness of the ASE in the thin film

Abstract

Temperature dependence of ASE and PL of an MAPbBr 3 thin film in the 20–300 K range during cooling, highlighting the role of thermally activated non-radiative processes and the orthorhombic–tetragonal and tetragonal–cubic phase transitions.

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Giorgi et al. (Thu,) studied this question.

synapsesocial.com/papers/698586388f7c464f2300a36a https://doi.org/https://doi.org/10.1039/d5nr04524j

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