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硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (8): 2890-2898.DOI: 10.16552/j.cnki.issn1001-1625.2026.0055

• 陶瓷 • 上一篇    下一篇

Yb2O3共掺杂对Lu2O3∶Eu透明陶瓷性能的影响

陈健(), 敬畏(), 王耀智, 孔志鹏, 吴浩   

  1. 中国工程物理研究院化工材料研究所,绵阳 621900
  • 收稿日期:2026-01-14 修订日期:2026-04-14 出版日期:2026-08-15 发布日期:2026-09-01
  • 通信作者: 敬畏,博士,正高级工程师。E-mail:jingwei@caep.cn
  • 作者简介:陈健(2001—),男,硕士研究生。主要从事纳米粉体和透明陶瓷方面的研究。E-mail:236081201@mail.sit.edu.cn
  • 基金资助:
    四川省创新人才基金(2023JDRC0015);中物院院长基金(YZJJZQ2023006)

Effect of Yb2O3 Co-Doping on Properties of Lu2O3∶Eu Transparent Ceramics

CHEN Jian(), JING Wei(), WANG Yaozhi, KONG Zhipeng, WU Hao   

  1. Institute of Chemical Materials,Chinese Academy of Engineering Physics,Mianyang 621900,China
  • Received:2026-01-14 Revised:2026-04-14 Published:2026-08-15 Online:2026-09-01

摘要:

掺铕氧化镥(Lu2O3∶Eu)透明陶瓷因密度高(9.4 g/cm3),对MeV级X射线阻截能力强,在工业探伤等领域具有重要应用场景。但Eu3+离子半径较大,易诱发晶界偏析与残余气孔,导致散射损耗;同时,Lu2O3基体中存在深能级陷阱,会产生较强余辉,限制其在高频成像中的应用。本研究引入Yb2O3作为烧结助剂兼能级调控剂,采用真空烧结结合热等静压工艺制备(Lu0.95-xYbxEu0.05)2O3(x=0、0.01、0.03、0.05、0.10)透明陶瓷。结果表明,当Yb3+含量为10%(原子分数)时,样品在611 nm处的直线透光率由60%提升至74%。光谱分析证实了Eu3+→Yb3+的协同能量转移过程,该过程虽导致部分发光猝灭,但引入新的非辐射弛豫通道,与陷阱捕获形成竞争,使余辉强度降低近两个数量级,显著抑制了余辉。

关键词: Lu2O3∶Eu, 闪烁体, 透明陶瓷, 烧结助剂, Yb2O3

Abstract:

Europium-doped lutetium oxide (Lu2O3∶Eu) transparent ceramics exhibit high density (9.4 g/cm3) and strong stopping power for MeV-level X-rays, making them highly promising for applications such as industrial non-destructive testing. However, the relatively large ionic radius of Eu3+ tends to induce grain boundary segregation and residual porosity, leading to scattering losses. Meanwhile, the presence of deep-level traps in the Lu2O3 matrix results in significant afterglow, limiting their application in high-frequency imaging. In this study, Yb2O3 was introduced as a dual-functional sintering aid and energy-level regulator, and (Lu0.95-xYb?Eu0.05)2O3 (x=0, 0.01, 0.03, 0.05, 0.10) transparent ceramics were fabricated via vacuum sintering combined with hot isostatic pressing. The results show that when the Yb3+ content is 10%(atomic percentage), the in-line transmittance of the sample at 611 nm increases from 60% to 74%. Spectroscopic analysis confirms a cooperative energy transfer process from Eu3+ to Yb3+. Although this process induces partial luminescence quenching, it introduces new non-radiative relaxation channels that compete with trap capture, reducing the afterglow intensity by nearly two orders of magnitude and significantly suppressing the afterglow.

Key words: Lu2O3∶Eu, scintillator, transparent ceramics, sintering aid, Yb2O3

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