Time-resolved photoluminescence analysis of ceramic Ce:GAGG scintillators

Chansun Park; Sangsu Kim; Alima Melis; Jiwon Seo; Shinhaeng Cho; Jung Yeol Yeom

doi:10.1364/OE.498651

Time-resolved photoluminescence analysis of ceramic Ce:GAGG scintillators

Chansun Park, Sangsu Kim, Alima Melis, Jiwon Seo, Shinhaeng Cho, Jung Yeol Yeom

School of Biomedical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

This paper introduces the characteristics and efficiency of post-treatment methods for enhancing the timing resolution of ceramic Ce:GAGG scintillators. The thermal annealing and surface treatments were included to analyze their impact on time-resolved photoluminescence (TRPL) and thermoluminescence (TL) characteristics. Optical properties were improved by suppressing nonradiative recombination due to the reduced surface defects, while heat-treatment removes traps as confirmed by TL measurements. TRPL decay characteristics revealed that samples treated with mechanical polishing followed by heat treatment exhibited the best scintillation performance, with a slow component of 272.3 ns. These findings will aid in developing techniques for improving the luminescence of other inorganic scintillators.

Original language	English
Pages (from-to)	34677-34687
Number of pages	11
Journal	Optics Express
Volume	31
Issue number	21
DOIs	https://doi.org/10.1364/OE.498651
Publication status	Published - 2023 Oct 9

Bibliographical note

Publisher Copyright:
© 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OE.498651

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title = "Time-resolved photoluminescence analysis of ceramic Ce:GAGG scintillators",

abstract = "This paper introduces the characteristics and efficiency of post-treatment methods for enhancing the timing resolution of ceramic Ce:GAGG scintillators. The thermal annealing and surface treatments were included to analyze their impact on time-resolved photoluminescence (TRPL) and thermoluminescence (TL) characteristics. Optical properties were improved by suppressing nonradiative recombination due to the reduced surface defects, while heat-treatment removes traps as confirmed by TL measurements. TRPL decay characteristics revealed that samples treated with mechanical polishing followed by heat treatment exhibited the best scintillation performance, with a slow component of 272.3 ns. These findings will aid in developing techniques for improving the luminescence of other inorganic scintillators.",

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AU - Kim, Sangsu

AU - Melis, Alima

AU - Seo, Jiwon

AU - Cho, Shinhaeng

AU - Yeom, Jung Yeol

PY - 2023/10/9

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AB - This paper introduces the characteristics and efficiency of post-treatment methods for enhancing the timing resolution of ceramic Ce:GAGG scintillators. The thermal annealing and surface treatments were included to analyze their impact on time-resolved photoluminescence (TRPL) and thermoluminescence (TL) characteristics. Optical properties were improved by suppressing nonradiative recombination due to the reduced surface defects, while heat-treatment removes traps as confirmed by TL measurements. TRPL decay characteristics revealed that samples treated with mechanical polishing followed by heat treatment exhibited the best scintillation performance, with a slow component of 272.3 ns. These findings will aid in developing techniques for improving the luminescence of other inorganic scintillators.

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Time-resolved photoluminescence analysis of ceramic Ce:GAGG scintillators

Abstract

Bibliographical note

ASJC Scopus subject areas

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