期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 136, 期 2-3, 页码 320-324出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2012.08.033
关键词
Optical materials; Photoluminescence spectroscopy; Defects; Luminescence; Optical properties
资金
- National Nature Science Young Foundation of China [10904057]
- Fundamental Research Funds for Central Universities [Lzjbky-2011-125]
- National Innovation Experiment Program of China
- Innovation and Entrepreneurship Foundation of Lanzhou University
The novel SnO2:Sm3+,Zr4+ afterglow phosphor is synthesized by solid state reaction. The SnO2:Sm3+ doesn't show afterglow. But, after co-doping Zr4+ in SnO2:Sm3+, the red afterglow luminescence of Sm3+ is firstly observed and the important role of Zr4+ on the afterglow is investigated. The photoluminescence shows that the doping of Zr4+ increases the emission lines of Sm3+ and decreases the emission band due to trapped hole center. The thermoluminescence reveals that the co-doping of Zr4+ induces the increase of shallow traps corresponding to the thermoluminescence peak at 48 degrees C. The depth of the traps is calculated to be 0.61 eV. The positron annihilation indicates that the traps are due to negatively charged tin vacancies and they play the important role on the afterglow of Sm3+ as hole traps. (c) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据