Photoluminescence at room temperature in polycrystalline BaxSr1-xTiO3 ceramics obtained by solid-state reaction method

被引：13

作者：

Zhang, Wanhui ^{[1
]}

Wang, Haiyan ^{[1
]}

Chen, Jian ^{[1
,2
]}

Zhang, Weihong ^{[2
]}

Xiong, Xiaomin ^{[1
]}

Zhang, Jinxiu ^{[1
]}

机构：

[1] Sun Yat Sen Zhongshan Univ, Dept Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

[2] Sun Yat Sen Zhongshan Univ, Dept Phys, Instrumentat Anal & Res Ctr, Guangzhou 510275, Guangdong, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2008年 / 128卷 / 08期

基金：

中国国家自然科学基金;

关键词：

photoluminescence; oxygen vacancies;

D O I：

10.1016/j.jlumin.2008.01.011

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Stoichiometric BaxSr1-xTiO3 ceramics (x = 0.7, 0.8, and 0.9) have been prepared by solid-state reaction method. It has been observed in our experiments that the photoluminescence (PL) spectra in such samples at room temperature were centered around 800 nm; the results have been found to differ from observations in current literature. An explanation of this phenomenon was given, and the origin of such photoluminescence is ascribed to certain defects existing in these compounds, such as oxygen vacancies. (c) 2008 Published by Elsevier B.V.

引用

页码：1359 / 1362

页数：4

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