Investigation of Optical Properties of Ceramic Ce:GAGG by High Temperature Annealing

Chansun Park; Muhammad Nasir Ullah; Chanho Kim; Shinhaeng Cho; Jung Yeol Yeom

doi:10.3938/jkps.75.962

Investigation of Optical Properties of Ceramic Ce:GAGG by High Temperature Annealing

Chansun Park, Muhammad Nasir Ullah, Chanho Kim, Shinhaeng Cho, Jung Yeol Yeom

School of Biomedical Engineering

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

5 Citations (Scopus)

Abstract

An as-fabricated cerium-doped ceramic scintillator Gd₃Al₂Ga₃O₁₂ (Ce:GAGG) was thermally annealed at different temperatures. The light output and energy resolution of the scintillators were measured before and after thermal treatment. The effect of thermal annealing in the air at high temperature (at 1000 °C for 5 hours) deforms the microstructure by mitigating oxygen vacancies of the ceramic scintillator. This has been proven by XPS study that showed the existence of oxygen vacancies and subsequent decrease of oxygen deficiency amid annealing treatment that led to an output signal increase. The diffusion ability of oxygen atoms by annealing played a key role in compensating for defect sites. In this study, by controlling thermodynamic conditions, the light output was enhanced by ∼30.4% and the energy resolution improved by ∼2.4% after annealing at 1000 °C in the air.

Original language	English
Pages (from-to)	962-967
Number of pages	6
Journal	Journal of the Korean Physical Society
Volume	75
Issue number	12
DOIs	https://doi.org/10.3938/jkps.75.962
Publication status	Published - 2019 Dec 1

Keywords

Energy resolution
Gamma-rays
Light output
Scintillator
X-ray Photoelectron Spectroscopy

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.3938/jkps.75.962

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@article{0276f5c160244ce1b3b60b4f3964d2cd,

title = "Investigation of Optical Properties of Ceramic Ce:GAGG by High Temperature Annealing",

abstract = "An as-fabricated cerium-doped ceramic scintillator Gd3Al2Ga3O12 (Ce:GAGG) was thermally annealed at different temperatures. The light output and energy resolution of the scintillators were measured before and after thermal treatment. The effect of thermal annealing in the air at high temperature (at 1000 °C for 5 hours) deforms the microstructure by mitigating oxygen vacancies of the ceramic scintillator. This has been proven by XPS study that showed the existence of oxygen vacancies and subsequent decrease of oxygen deficiency amid annealing treatment that led to an output signal increase. The diffusion ability of oxygen atoms by annealing played a key role in compensating for defect sites. In this study, by controlling thermodynamic conditions, the light output was enhanced by ∼30.4% and the energy resolution improved by ∼2.4% after annealing at 1000 °C in the air.",

keywords = "Energy resolution, Gamma-rays, Light output, Scintillator, X-ray Photoelectron Spectroscopy",

author = "Chansun Park and Ullah, {Muhammad Nasir} and Chanho Kim and Shinhaeng Cho and Yeom, {Jung Yeol}",

note = "Funding Information: This work was supported in part by National Research Foundation of Korea (NRF-2018M2A8A4024283, NRF-2017M2A2A4A01071240, NRF-2017M2A2A6A02020807, NRF-2016M2B2A9A02945226), and MSIT (Ministry of Science and ICT), Korea, under the ITRC (Information Technology Research Center) support program (IITP-2019-1711093226) supervised by the IITP (Institute for Information & Communications Technology Promotion). Funding Information: This work was supported in part by National Research Foundation of Korea (NRF-2018M2A8A4024283, NRF-2017M2A2A4A01071240, NRF-2017M2A2A6A02020807, NRF-2016M2B2A9A02945226), and MSIT (Ministry of Science and ICT), Korea, under the ITRC (Information Technology Research Center) support program (IITP-2019-1711093226) supervised by the IITP (Institute for Information & Communications Technology Promotion). Publisher Copyright: {\textcopyright} 2019, The Korean Physical Society.",

year = "2019",

month = dec,

day = "1",

doi = "10.3938/jkps.75.962",

language = "English",

volume = "75",

pages = "962--967",

journal = "Journal of the Korean Physical Society",

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publisher = "Korean Physical Society",

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T1 - Investigation of Optical Properties of Ceramic Ce:GAGG by High Temperature Annealing

AU - Park, Chansun

AU - Ullah, Muhammad Nasir

AU - Kim, Chanho

AU - Cho, Shinhaeng

AU - Yeom, Jung Yeol

N1 - Funding Information: This work was supported in part by National Research Foundation of Korea (NRF-2018M2A8A4024283, NRF-2017M2A2A4A01071240, NRF-2017M2A2A6A02020807, NRF-2016M2B2A9A02945226), and MSIT (Ministry of Science and ICT), Korea, under the ITRC (Information Technology Research Center) support program (IITP-2019-1711093226) supervised by the IITP (Institute for Information & Communications Technology Promotion). Funding Information: This work was supported in part by National Research Foundation of Korea (NRF-2018M2A8A4024283, NRF-2017M2A2A4A01071240, NRF-2017M2A2A6A02020807, NRF-2016M2B2A9A02945226), and MSIT (Ministry of Science and ICT), Korea, under the ITRC (Information Technology Research Center) support program (IITP-2019-1711093226) supervised by the IITP (Institute for Information & Communications Technology Promotion). Publisher Copyright: © 2019, The Korean Physical Society.

PY - 2019/12/1

Y1 - 2019/12/1

N2 - An as-fabricated cerium-doped ceramic scintillator Gd3Al2Ga3O12 (Ce:GAGG) was thermally annealed at different temperatures. The light output and energy resolution of the scintillators were measured before and after thermal treatment. The effect of thermal annealing in the air at high temperature (at 1000 °C for 5 hours) deforms the microstructure by mitigating oxygen vacancies of the ceramic scintillator. This has been proven by XPS study that showed the existence of oxygen vacancies and subsequent decrease of oxygen deficiency amid annealing treatment that led to an output signal increase. The diffusion ability of oxygen atoms by annealing played a key role in compensating for defect sites. In this study, by controlling thermodynamic conditions, the light output was enhanced by ∼30.4% and the energy resolution improved by ∼2.4% after annealing at 1000 °C in the air.

AB - An as-fabricated cerium-doped ceramic scintillator Gd3Al2Ga3O12 (Ce:GAGG) was thermally annealed at different temperatures. The light output and energy resolution of the scintillators were measured before and after thermal treatment. The effect of thermal annealing in the air at high temperature (at 1000 °C for 5 hours) deforms the microstructure by mitigating oxygen vacancies of the ceramic scintillator. This has been proven by XPS study that showed the existence of oxygen vacancies and subsequent decrease of oxygen deficiency amid annealing treatment that led to an output signal increase. The diffusion ability of oxygen atoms by annealing played a key role in compensating for defect sites. In this study, by controlling thermodynamic conditions, the light output was enhanced by ∼30.4% and the energy resolution improved by ∼2.4% after annealing at 1000 °C in the air.

KW - Energy resolution

KW - Gamma-rays

KW - Light output

KW - Scintillator

KW - X-ray Photoelectron Spectroscopy

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U2 - 10.3938/jkps.75.962

DO - 10.3938/jkps.75.962

M3 - Article

AN - SCOPUS:85077026168

VL - 75

SP - 962

EP - 967

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

SN - 0374-4884

IS - 12

ER -

Investigation of Optical Properties of Ceramic Ce:GAGG by High Temperature Annealing

Abstract

Keywords

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