钛宝石晶体的泡生法生长和闪烁发光性能

人工晶体学报 ›› 2021, Vol. 50 ›› Issue (4): 762-767.

钛宝石晶体的泡生法生长和闪烁发光性能

王庆国¹, 刘波¹, 罗平¹, 唐慧丽¹, 吴锋¹, 康森², 段金柱³, 王勤峰³, 徐军¹

1.同济大学物理科学与工程学院,上海 200092;
2.天通银厦新材料有限公司,银川 750001;
3.天通控股股份有限公司,海宁 314412

收稿日期:2021-04-07 出版日期:2021-04-15 发布日期:2021-05-21
通讯作者: 徐军,博士,教授。E-mail:xujun@mail.shcnc.ac.cn
作者简介:王庆国(1983—),男,山东省人,博士,工程师。E-mail:qgwang@tongji.edu.cn
基金资助:
上海蓝宝石单晶工程技术研究中心项目(14DZ2252500)

Crystal Growth and Scintillation Luminescence Properties of Ti:Al₂O₃ Crystals Grown with Kyropoulos Method

WANG Qingguo¹, LIU Bo¹, LUO Ping¹, TANG Huili¹, WU Feng¹, KANG Sen², DUAN Jinzhu³, WANG Qinfeng³, XU Jun¹

1. School of Physics and Engineering, Tongji University, Shanghai 200092, China;
2. TDG Yinxia New Material Co., Ltd., Yinchuan 750001, China;
3. TDG Holding Co., Ltd., Haining 314412, China

Received:2021-04-07 Online:2021-04-15 Published:2021-05-21

摘要/Abstract

摘要： 采用泡生法生长了115 kg级大尺寸钛宝石(Ti:Al₂O₃)晶体,晶体外形完整无开裂,制备了口径达φ300 mm的高质量大口径钛宝石单晶样品。在X射线和α粒子激发下测试了晶体的闪烁发光性能。结果表明,Ti:Al₂O₃晶体的闪烁发光包含近红外和近紫外发光。近红外发光来源于Ti³⁺特征发射,效率较高,衰减时间慢。近紫外发光来源于Ti局域激子发光和F⁺心发光,具有较快的衰减时间,其光输出与掺杂导致的自吸收有关。α粒子激发下,光产额达到1 130.5 pe/MeV,其中快成分光产额为29.6 pe/MeV。

关键词: 钛宝石, 单晶生长, 泡生法, 闪烁发光性能

Abstract: Large-sized Ti:Al₂O₃ crystals with the weight of 115 kg were grown successfully by Kyropoulos method. The grown crystals have complete shape without any cracking. Large Ti:Al₂O₃ single crystal sample with diameter of 300 mm was prepared. The scintillation luminescence properties of the grown crystals were tested under the X-ray and α particle excitation. The results show that the scintillation luminescence of Ti:Al₂O₃ crystals include near infrared band and near ultraviolet band. The near infrared emission comes from the characteristic emission of Ti³⁺, which has high efficiency and slow decay time. The near ultraviolet emission comes from Ti-localized exciton emission and F⁺center, which has the fast decay time. The light output is related to the self-absorption caused by Ti-doping. Under the excitation of the α particles, the light yield reaches up to 1 130.5 pe/MeV, and the fast component is 29.6 pe/MeV.

Key words: Ti:Al₂O₃, single crystal growth, Kyropoulos method, scintillation luminescence property

中图分类号:

王庆国, 刘波, 罗平, 唐慧丽, 吴锋, 康森, 段金柱, 王勤峰, 徐军. 钛宝石晶体的泡生法生长和闪烁发光性能[J]. 人工晶体学报, 2021, 50(4): 762-767.

WANG Qingguo, LIU Bo, LUO Ping, TANG Huili, WU Feng, KANG Sen, DUAN Jinzhu, WANG Qinfeng, XU Jun. Crystal Growth and Scintillation Luminescence Properties of Ti:Al₂O₃ Crystals Grown with Kyropoulos Method[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(4): 762-767.

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