Spectroscopic study of Eu3+-doped and Eu3+,Y3+-codoped SiO2 sol-gel glasses

被引：37
|
作者：
Jia, WY [1 ]
Liu, HM
Felofilov, SP
Meltzer, R
Jiao, J
机构：
[1] Univ Puerto Rico, Dept Phys, Mayaguez, PR 00681 USA
[2] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
[3] Univ Georgia, Dept Phys & Astron, Athens, GA 30602 USA
[4] Univ Arizona, Dept Mat Sci & Engn, Tucson, AZ USA
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2000年 / 311卷 / 01期
基金：
美国国家科学基金会; 美国国家航空航天局;
关键词：
photoluminescence; hole burning; nanoclusters; Eu3+-SiO2;
D O I：
10.1016/S0925-8388(00)00850-1
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Eu3+-doped and Eu3+,Y3+-codoped SiO2 glasses were prepared through sol-gel technology. Effects of annealing on the spectroscopic properties. including photoluminescence, decay processes and spectral hole burning, were investigated. It was found that clusterization of Eu and Eu-Y may take place during the annealing process, and the environment of Eu ions was changed from a site of near inversion symmetry to one with more non-inversion character, resulting in an increase of the D-5(0)-->F-5(2) transitions relative to that of the transitions to F-5(0), and F-5(1). The affects of clusterization on the spectroscopic properties are discussed. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：11 / 15
页数：5
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