On the luminescence of Bi3+ in the pyrochlore Y2Sn2O7

被引：78
作者：
Srivastava, AM [1 ]
机构：
[1] GE Co, Corp Res & Dev, Niskayuna, NY 12309 USA
来源：
MATERIALS RESEARCH BULLETIN | 2002年 / 37卷 / 04期
关键词：
oxides; optical materials; chemical synthesis; luminescence;
D O I：
10.1016/S0025-5408(02)00688-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The photoluminescence and the excitation spectra of Bi3+ in the pyrochlore Y2Sn2O7 have been investigated in the temperature range of 15-300 K. The photoluminescence spectrum of Bi3+ in Y2Sn2O7 consists of two bands, one in the ultraviolet (385 nm) and the other in the visible (515 nm) part of the spectrum. The ultraviolet emission is attributed to the P-3(0.1) --> S-1(0) transition of isolated Bi3+ ions and the visible luminescence to Bi3+ pairs (clusters) in the host lattice. A comparative study of the Bi3+ luminescence in the pyrochlores Y2Sn2O7, La2Zr2O7 and Gd2GaSbO7 is presented. (C) 2002 Elsevier Science Ltd. All rights reserved.
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页码：745 / 751
页数：7
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