Luminescent Properties of Lu2SiO5:Ce Phosphors Codoped With Li Ions

被引：15

作者：

Jia, Lingchun ^{[1
]}

Gu, Mu ^{[1
]}

Liu, Xiaolin ^{[1
]}

Huang, Shiming ^{[1
]}

Liu, Bo ^{[1
]}

Ni, Chen ^{[1
]}

机构：

[1] Tongji Univ, Dept Phys, Shanghai Key Lab Special Artificial Microstruct M, Shanghai 200092, Peoples R China

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2010年 / 57卷 / 03期

关键词：

Li+ codopant; luminescence; Lu2SiO5:Ce; sol-gel; DOPED LUTETIUM OXYORTHOSILICATE; SCINTILLATION PROPERTIES; TEMPERATURE-DEPENDENCE; LSO-CE;

D O I：

10.1109/TNS.2009.2036364

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Lu2SiO5:Ce, Li-y (x = 0.002-0.016 and y = 0.01-0.08) phosphors were prepared by Pechini sol-gel chemistry, and the influence of Li+ ions on luminescence properties of LSO:Ce phosphors was discussed. It was exhibited that the optimal doping concentrations were at x = 0.006 and y = 0.02, and the crystallization temperature of pure LSO phase was reduced distinctly by Li+ codoping. It was found that photoluminescence intensity of LSO:Ce-0.0006, Li-0.02 phosphors was increased by factors of 2.2 in comparison to that of LSO:Ce-0.0006 phosphors. Enhanced luminescence was regarded as the result of alteration of crystal field surrounding Ce3+ activator. Moreover, the energy transfer from Ce2 to Ce1 centers was induced by Li+ codoping.

引用

页码：1268 / 1271

页数：4

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