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Journal of Inorganic Materials

Journal of Inorganic Materials

   

Fabrication, Microstructure and Optical Properties of Gd2O2S:Tb Scintillation Ceramics with Different Doping Concentrations

HUANG Dong1, WU Junlin1,2, HU Chen1,2, WANG Yanbin1,2, CHEN Yuyang1,2, LI Tingsong1,2, YANG Wenqin3,4, JIANG Xingfen3,4, ZHOU Jianrong3,4, SUN Zhijia3,4, LI Jiang1,2   

  1. 1. State Key Laboratory of High Performance Ceramics, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China;
    2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Spallation Neutron Source Science Center, Dongguan 523803, China;
    4. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2025-10-22 Revised:2026-01-28
  • Contact: HU Chen, associate professor. E-mail: huchen@mail.sic.ac.cn; LI Jiang, professor. E-mail: lijiang@mail.sic.ac.cn
  • About author:HUANG Dong (1994-), male, Master. E-mail: huangdong@mail.sic.ac.cn
  • Supported by:
    Advanced Materials-National Science and Technology Major Project (2024ZD0605900); National Natural Science Foundation of China (12175254); Guangdong Provincial Key Laboratory of Advanced Particle Detection Technology (2024B1212010005)

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Abstract: The Gd2O2S:Tb scintillation ceramics with different doping concentrations were prepared using the powders synthesized by the water-bath method, through vacuum pre-sintering followed by hot isostatic pressing post-treatment. The influence of doping concentration on the microstructure and optical properties of Gd2O2S:Tb ceramics was investigated. The lattice parameter of Gd2O2S:Tb ceramics decreases with the increase in doping concentrations. The total optical transmittance of Gd2O2S:Tb ceramics with different doping concentrations does not vary much due to the secondary phase. With the increase in doping concentration, the photoluminescence (PL) decay time decreases from 617 μs to 576 μs, which is caused by the non-radiative relaxation among Tb³⁺ ions. The PL and X-ray excited luminescence (XEL) of Gd2O2S:Tb ceramics exhibit the high concentration quenching phenomenon. The 3.5% Gd2O2S:Tb (in atomic percent) ceramics have the highest steady-state XEL intensity with a light output of 37500 ph/MeV. The afterglow of Gd2O2S:Tb ceramics with different concentrations varies little in the range of 0.1% to 0.3% at 50 ms.

Key words: water-bath method, Gd2O2S:Tb ceramics, doping concentration, scintillation property

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