Effects of Sc3+ and Y3+ codoping on luminescence and scintillation properties of LaBr3:Ce single crystals

被引：0

作者：

Zong, Lei ^{[1
,2
]}

Wang, Qian ^{[2
]}

Zhang, Yuhao ^{[2
]}

Wang, Lixi ^{[1
]}

Wu, Yuntao ^{[2
]}

机构：

[1] Nanjing Tech Univ, Coll Mat Sci & Engn, Nanjing 211816, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab Funct Crystals & Devices, Shanghai 201899, Peoples R China

来源：

JOURNAL OF CRYSTAL GROWTH | 2025年 / 664卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

LaBr3:Ce; Bridgman method; Scintillation crystal; Codoping; ENERGY RESOLUTION; SR2+; CE3+;

D O I：

10.1016/j.jcrysgro.2025.128207

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

In this work, the effects of Sc and Y codoping on the luminescence and scintillation properties of LaBr3:Ce single crystals were systematically studied. LaBr3:Ce single crystals with a diameter of 7 mm codoped with different Sc and Y concentrations were grown by the vertical Bridgman method. It was found the incorporation of Sc codoping does not alter the luminescence mechanism and exhibits limited effects on light yield and energy resolution. In contrast, with the introduction of Y codopant, the LaBr3:Ce single crystals exhibit coloration. In addition to the feature Ce3+ 5d-4f emission, Y codoped LaBr3:Ce has a defect-related emission ranging from 450 nm to 800 nm under both photoluminescence and X-ray excitation. Moreover, Y codoping introduces a slow scintillation decay component of 260 ns and an enhanced X-ray afterglow level. Both light yield and energy resolution of LaBr3:Ce were significantly deteriorated after Y codoping.

引用

页数：6

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