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Journal of Advanced Ceramics 2023, 12(10): 1919-1929 https://doi.org/10.26599/JAC.2023.9220797
Research Article | Open Access | Issue | Published: 25 October 2023

Compositional regulation of multi-component GYGAG:Ce scintillation ceramics: Self-sintering-aid effect and afterglow suppression

Show Author's Information Danyang Zhua,b,  Lexiang Wua,  Alena Beitlerovac,  Romana Kucerkovac,  Weerapong Chewpraditkuld,  Martin Niklc,  Jiang Lia,b( )
Transparent Ceramics Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
Institute of Physics of the Czech Academy of Sciences, Prague 16200, Czech Republic
King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
Keywords:
afterglow, GYGAG:Ce ceramics, multi-component garnet, compositional regulation
Cite this article:
Zhu D, Wu L, Beitlerova A, et al. Compositional regulation of multi-component GYGAG:Ce scintillation ceramics: Self-sintering-aid effect and afterglow suppression. Journal of Advanced Ceramics, 2023, 12(10): 1919-1929. https://doi.org/10.26599/JAC.2023.9220797
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Abstract Full text About this article

(Gd,Y,Ce)3(YxGa1−x)2GaAl2O12 (GYGAG:Ce) scintillation ceramics with different Y excess, where x = 0.005−0.08, were fabricated by the solid-state reaction method. The effects of stoichiometry on the phase composition, optical quality, and microstructure of GYGAG:Ce ceramics were analyzed. GYGAG:Ce ceramics have a pure garnet phase and obtain good in-line transmittance when x < 0.04, while more Y excess leads to the creation of the secondary phase. The change of x value influences the sintering behavior of the GYGAG:Ce ceramics: The excess of Y works as the self-sintering aid and significantly reduces the sintering temperature of ceramics. When x = 0.01–0.04, the X-ray excited luminescence (XEL) spectra and light yields of GYGAG:Ce ceramics are similar. The fast scintillation decay time and afterglow intensity of GYGAG:Ce ceramics show a slight decrease with increasing x value. Finally, additional 50–500 ppm MgO and 100–500 ppm CaO were introduced to the GYGAG:Ce ceramic with x = 0.04, and both were found to significantly increase the fast scintillation component and reduce the afterglow intensity by two orders of magnitude to 0.01% after X-ray cut-off.


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Compositional regulation of multi-component GYGAG:Ce scintillation ceramics: Self-sintering-aid effect and afterglow suppression

Show Author's information Danyang Zhua,b, Lexiang Wua, Alena Beitlerovac, Romana Kucerkovac, Weerapong Chewpraditkuld, Martin Niklc, Jiang Lia,b( )
Transparent Ceramics Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
Institute of Physics of the Czech Academy of Sciences, Prague 16200, Czech Republic
King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand

Abstract

(Gd,Y,Ce)3(YxGa1−x)2GaAl2O12 (GYGAG:Ce) scintillation ceramics with different Y excess, where x = 0.005−0.08, were fabricated by the solid-state reaction method. The effects of stoichiometry on the phase composition, optical quality, and microstructure of GYGAG:Ce ceramics were analyzed. GYGAG:Ce ceramics have a pure garnet phase and obtain good in-line transmittance when x < 0.04, while more Y excess leads to the creation of the secondary phase. The change of x value influences the sintering behavior of the GYGAG:Ce ceramics: The excess of Y works as the self-sintering aid and significantly reduces the sintering temperature of ceramics. When x = 0.01–0.04, the X-ray excited luminescence (XEL) spectra and light yields of GYGAG:Ce ceramics are similar. The fast scintillation decay time and afterglow intensity of GYGAG:Ce ceramics show a slight decrease with increasing x value. Finally, additional 50–500 ppm MgO and 100–500 ppm CaO were introduced to the GYGAG:Ce ceramic with x = 0.04, and both were found to significantly increase the fast scintillation component and reduce the afterglow intensity by two orders of magnitude to 0.01% after X-ray cut-off.

Keywords: afterglow, GYGAG:Ce ceramics, multi-component garnet, compositional regulation

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Publication history
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Publication history

Received: 18 June 2023
Revised: 27 July 2023
Accepted: 16 August 2023
Published: 25 October 2023
Issue date: October 2023

Copyright

© The Author(s) 2023.

Acknowledgements

This work was supported by the International Partnership Program of Chinese Academy of Sciences (Grant No. 121631KYSB20200039), the International Cooperation Project of Shanghai Science and Technology Commission (Grant No. 20520750200), the National Key R&D Program of China (Grant No. 2021YFE0104800), and the Key Research Project of the Frontier Science of the Chinese Academy of Sciences (Grant No. QYZDB-SSW-JSC022). Partial support of the Czech Ministry of Education, Youth and Sports under Project SOLID21 CZ.02.1. (Grant No. 01/0.0/0.0/16_019/0000760) and Czech Science Foundation project (Grant No. GA21-17731S) is acknowledged with thanks.

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