期刊
JOURNAL OF LUMINESCENCE
卷 130, 期 4, 页码 728-732出版社
ELSEVIER
DOI: 10.1016/j.jlumin.2009.11.034
关键词
Ce3+; Tb3+; Ce4+; Photoluminescence; Thermal degradation
类别
资金
- National Natural Science Foundation of China [50502031]
- Natural Science Foundation of Jilin Province [20060522]
- Chinese Academy of Sciences
CePO4:Tb nanorods were synthesized via a simple wet-chemical route. The as-synthesized CePO4:Tb nanorods present high photoluminescence efficiency due to an efficient energy transfer form Ce3+ to Tb3+. However, heat treatment at 150 degrees C in air leads to a significant decrease of photoluminescence. X-ray photoelectron spectroscopy and excitation spectra revealed the oxidation of Ce3+ to Ce4+ in the heat-treatment process, which should be responsible for significant photoluminescence degradation due to the breakage of Ce3+ -> Tb3+ energy transfer. This conclusion is further supported by atmosphere and size effects of photoluminescence of CePO4:Tb under the heat treatment. (C) 2009 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