Electronic properties of Jahn-Teller and photoluminescence systems under pressure

TL;DR

This paper investigates how applying high pressure affects the electronic and photoluminescent properties of materials with transition-metal ions, focusing on non-radiative deexcitation mechanisms and their potential modification.

Contribution

It explores the influence of high pressure on non-radiative processes in photoluminescent materials containing transition-metal ions, providing insights into controlling PL efficiency.

Findings

High pressure can alter non-radiative deexcitation pathways.

Structural factors significantly influence PL under pressure.

Pressure modifies electronic structures affecting PL quantum yield.

Abstract

Photoluminescence (PL) properties of materials containing transition-metal ions depend on a variety of structural factors such as electronic structure, site symmetry and neighbouring atoms. These factors play a crucial role for the occurrence PL i.e. the PL quantum yield. This work investigates different mechanisms leading to non-radiative deexcitation processes and whether they can be modified by applying high pressure.