Enhancement of the luminescent and optical properties of ceramic Ce:GAGG after surface treatment with phosphoric acid

Chansun Park; Sangsu Kim; Wonhi Lee; Chanho Kim; Shinhaeng Cho; Jung Yeol Yeom

doi:10.1364/OE.414620

Enhancement of the luminescent and optical properties of ceramic Ce:GAGG after surface treatment with phosphoric acid

Chansun Park, Sangsu Kim, Wonhi Lee, Chanho Kim, Shinhaeng Cho, Jung Yeol Yeom

School of Biomedical Engineering

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

2 Citations (Scopus)

Abstract

Surface modification of ceramic Ce-doped Gd3Al2Ga3O1212 (Ce:GAGG) was performed by exposing small samples to anhydrous phosphoric acid (H3PO4) under different conditions (temperature and duration) to investigate the effects of chemical polishing treatment. When coupled to a photomultiplier tube (PMT) and used as a radiation detector, chemical treatment for 3 min at 190 °C improved the light (signal) output by 24.8% and energy resolution by 2.5% (percentage point), respectively. This can be attributed to a reduction in surface roughness that enhanced optical properties. Thus, chemical polishing could be a low-cost alternative to mechanical polishing especially for small or complex shaped ceramic scintillators.

Original language	English
Pages (from-to)	751-760
Number of pages	10
Journal	Optics Express
Volume	29
Issue number	2
DOIs	https://doi.org/10.1364/OE.414620
Publication status	Published - 2021 Jan 18

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "Enhancement of the luminescent and optical properties of ceramic Ce:GAGG after surface treatment with phosphoric acid",

abstract = "Surface modification of ceramic Ce-doped Gd3Al2Ga3O1212 (Ce:GAGG) was performed by exposing small samples to anhydrous phosphoric acid (H3PO4) under different conditions (temperature and duration) to investigate the effects of chemical polishing treatment. When coupled to a photomultiplier tube (PMT) and used as a radiation detector, chemical treatment for 3 min at 190 °C improved the light (signal) output by 24.8% and energy resolution by 2.5% (percentage point), respectively. This can be attributed to a reduction in surface roughness that enhanced optical properties. Thus, chemical polishing could be a low-cost alternative to mechanical polishing especially for small or complex shaped ceramic scintillators. ",

author = "Chansun Park and Sangsu Kim and Wonhi Lee and Chanho Kim and Shinhaeng Cho and Yeom, {Jung Yeol}",

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T1 - Enhancement of the luminescent and optical properties of ceramic Ce:GAGG after surface treatment with phosphoric acid

AU - Park, Chansun

AU - Kim, Sangsu

AU - Lee, Wonhi

AU - Kim, Chanho

AU - Cho, Shinhaeng

AU - Yeom, Jung Yeol

PY - 2021/1/18

Y1 - 2021/1/18

N2 - Surface modification of ceramic Ce-doped Gd3Al2Ga3O1212 (Ce:GAGG) was performed by exposing small samples to anhydrous phosphoric acid (H3PO4) under different conditions (temperature and duration) to investigate the effects of chemical polishing treatment. When coupled to a photomultiplier tube (PMT) and used as a radiation detector, chemical treatment for 3 min at 190 °C improved the light (signal) output by 24.8% and energy resolution by 2.5% (percentage point), respectively. This can be attributed to a reduction in surface roughness that enhanced optical properties. Thus, chemical polishing could be a low-cost alternative to mechanical polishing especially for small or complex shaped ceramic scintillators.

AB - Surface modification of ceramic Ce-doped Gd3Al2Ga3O1212 (Ce:GAGG) was performed by exposing small samples to anhydrous phosphoric acid (H3PO4) under different conditions (temperature and duration) to investigate the effects of chemical polishing treatment. When coupled to a photomultiplier tube (PMT) and used as a radiation detector, chemical treatment for 3 min at 190 °C improved the light (signal) output by 24.8% and energy resolution by 2.5% (percentage point), respectively. This can be attributed to a reduction in surface roughness that enhanced optical properties. Thus, chemical polishing could be a low-cost alternative to mechanical polishing especially for small or complex shaped ceramic scintillators.

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Enhancement of the luminescent and optical properties of ceramic Ce:GAGG after surface treatment with phosphoric acid

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