Understanding the Influence of Electron Traps and Urbach States on the Kinetics of Ti3+ Persistent Luminescence in LaAlO3:Ti3+ DOI Creative Commons
Wojciech Piotrowski, Justyna Zeler, Vasyl Kinzhybalo

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

The luminescence kinetics of Ti3+ ions, resulting from the spin-allowed 2E → 2T2 electron transition, are generally expected to be fast, within microsecond range. However, in this study, we observed average lifetimes up 30 ms nanocrystalline LaAlO3:Ti3+ powders. Our detailed analysis spectroscopic and thermoluminescence properties suggests that prolonged is associated with presence traps proximity excited state conduction band, which facilitates energy transfer between them. Furthermore, shift Urbach states an increasing concentration correlates efficiency deeper ions. This study provides a comprehensive strategy for controlling ions through trap engineering, induced by dopant ion concentration, can applied various fields including thermometry.

Language: Английский

Understanding the Influence of Electron Traps and Urbach States on the Kinetics of Ti3+ Persistent Luminescence in LaAlO3:Ti3+ DOI Creative Commons
Wojciech Piotrowski, Justyna Zeler, Vasyl Kinzhybalo

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

The luminescence kinetics of Ti3+ ions, resulting from the spin-allowed 2E → 2T2 electron transition, are generally expected to be fast, within microsecond range. However, in this study, we observed average lifetimes up 30 ms nanocrystalline LaAlO3:Ti3+ powders. Our detailed analysis spectroscopic and thermoluminescence properties suggests that prolonged is associated with presence traps proximity excited state conduction band, which facilitates energy transfer between them. Furthermore, shift Urbach states an increasing concentration correlates efficiency deeper ions. This study provides a comprehensive strategy for controlling ions through trap engineering, induced by dopant ion concentration, can applied various fields including thermometry.

Language: Английский

Citations

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