LYSO∶Ce闪烁晶体的研究进展

摘要/Abstract

摘要： 铈掺杂硅酸钇镥(LYSO∶Ce)晶体显示出优异的闪烁性能,并在核医学、高能物理及安全检查等领域具有广泛应用。本文综述了LYSO∶Ce闪烁晶体的晶体结构、发光机制、晶体生长存在的主要问题以及LYSO∶Ce晶体可能的发展方向。同时,梳理了LYSO∶Ce晶体生长过程中常见问题及对应的解决方案,并进一步讨论了Ce³⁺占位情况以及Ce⁴⁺与闪烁性能之间的关系。此外还展示了本团队在LYSO∶Ce晶体生长的最新研究成果,使用中频感应提拉炉生长出尺寸为φ95.42 mm×200 mm的LYSO∶Ce闪烁晶体。

关键词: LYSO∶Ce, 闪烁晶体, 晶体结构, 晶体生长, 闪烁机制, 氧空位

Abstract: Cerium-doped lutetium-yttrium oxyorthosilicate (LYSO:Ce) crystals show excellent scintillation properties, and has been widely used in the filed of nuclear medicine, high-energy physics and safety inspection. The crystal structure, luminescent mechanism, main problems in the crystal growth and the possible direction of development of LYSO:Ce scintillation crystals are reviewed in this paper. Furthermore, the common issues with corresponding solutions in the crystal growth of LYSO:Ce are summarized, and further the space occupation of Ce³⁺ ions and the relationship between Ce⁴⁺ ions and scintillation properties are discussed. In addition, the latest research results from our groups in LYSO:Ce crystal growth are displayed and the dimension of φ95.42 mm×200 mm of LYSO:Ce scintillation crystal was grown using medium frequency induction furnace.

Key words: LYSO:Ce, scintillation crystal, crystal structure, crystal growth, scintillation mechanism, oxygen vacancy

中图分类号:

O734
O781

顾鹏, 王鹏刚, 官伟明, 郑丽, 周燕. LYSO∶Ce闪烁晶体的研究进展[J]. 人工晶体学报, 2021, 50(10): 1858-1869.

GU Peng, WANG Penggang, GUAN Weiming, ZHENG Li, ZHOU Yan. Research Progress on LYSO:Ce Scintillation Crystals[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(10): 1858-1869.

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