Luminescence temperature and pressure studies of Zn2SiO4 phosphors doped with Mn2+ and Eu3+ ions

被引：72
作者：
Su, FH
Ma, BS
Ding, K
Li, GH
Wang, SP
Chen, W
Joly, AG
McCready, DE
机构：
[1] Chinese Acad Sci, Inst Semicond, State Key lab Superlattices & Microstruct, Beijing 100083, Peoples R China
[2] Nomad Inc, Stillwater, OK 74074 USA
[3] Pacific NW Natl Lab, Richland, WA 99354 USA
来源：
JOURNAL OF LUMINESCENCE | 2006年 / 116卷 / 1-2期
基金：
美国国家科学基金会; 中国国家自然科学基金; 美国国家卫生研究院;
关键词：
Zn2SiO4; Mn2+; Eu3+; hydrostatic pressures; luminescence; crystal field;
D O I：
10.1016/j.jlumin.2005.03.010
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Zn2SiO4:Mn2+, Zn2SiO4:Eu3+ and Zn2SiO4:Mn2+ Eu3+ phosphors were prepared by a sol-gel process and their luminescence spectra were investigated. The emission bands from intra-ion transitions of Mn2+ and Eu3+ samples were studied as a function of pressure. The pressure coefficient of Mn2+ emission was found to be -25.3 +/- 0.5 and -28.5 +/- 0.9 meV/GPa for Zn2SiO4:Mn2+ and Zn2SiO4:Mn2+ Eu3+, respectively. The Eu3+ emission shows only weak pressure dependence. The pressure dependences of the Mn2+ and Eu3+ emissions in Zn2SiO4:Mn2+ Eu3+ are slightly different from that in Zn2SiO4:Mn2+ and Zn2SiO4:Eu3+ samples, which can be attributed to the co-doping of Mn2+ and Eu3+ ions. The Mn2+ emission in the two samples, however, exhibits analogous temperature dependence and similar luminescence lifetimes, indicating no energy transfer from Mn2+ to Eu3+ occurs. (c) 2005 Elsevier B.V. All rights reserved.
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页码：117 / 126
页数：10
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