Analysis of luminescence spectra and decay kinetics of LYSO:Ce scintillating crystals with varied yttrium content

被引：16
|
作者：
Wan, Bo [1 ,2 ,3 ]
Ding, Dongzhou [1 ,2 ,4 ]
Wang, Linwei [1 ,4 ]
Xie, Jianjun [3 ]
Wu, Yuntao [1 ,2 ]
Shi, Junjie [4 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, 585 Heshuo Rd, Shanghai 201899, Peoples R China
[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, 19A Yuquan Rd, Beijing 100049, Peoples R China
[3] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China
[4] Shanghai Inst Ceram, R&D Ctr, 215 Chengbei Rd, Shanghai 201899, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2021年 / 47卷 / 12期
关键词：
Silicate; Ce3+5d-4f transition; Optical properties; Lifetime; ENERGY-TRANSFER PROCESSES; RARE-EARTH; EMISSION-SPECTRA; LSO CRYSTALS; CE3+; LIGHT; AFTERGLOW; IONS; RAY; UV;
D O I：
10.1016/j.ceramint.2021.03.002
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This work aims to fully analyze the luminescence spectra and time response properties of LYSO:Ce (Lu2-2xY2xSiO5:Ce) scintillation crystals with different Y contents. The photoluminescence excitation (PLE) and emission (PL) spectra of Ce1 and Ce2 luminescence centers in LYSO:Ce crystals with different Y contents have been systematically examined. The shape of photoluminescence emission spectra and the contribution of the energy transfer process between Ce1 and Ce2 have been varied with the yttrium content in the crystal. Based on the photoluminescence and scintillation decay time measurements, a table has been shown to provide the relationship between the decay time and Y content in the crystal. Meanwhile, the afterglow measurements demonstrate the relationship between long-lived delay recombination processes and the free carrier traps existing in the bandgap, and the source of afterglow has been analyzed.
引用
收藏
页码：16918 / 16925
页数：8
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