Heat-treatment-induced luminescence degradation in Tb3+-doped CePO4 nanorods

被引：14

作者：

Di, Weihua ^{[1
]}

Zhao, Xiaoxia ^{[1
]}

Nie, Zhaogang ^{[1
]}

Wang, Xiaojun ^{[1
]}

Lu, Shaozhe ^{[1
]}

Zhao, Haifeng ^{[1
]}

Ren, Xinguang ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Key Lab Excited State Proc, Changchun 130033, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2010年 / 130卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Ce3+; Tb3+; Ce4+; Photoluminescence; Thermal degradation; ENERGY-TRANSFER; NANOPARTICLES; PHOTOLUMINESCENCE; SURFACE; CORE;

D O I：

10.1016/j.jlumin.2009.11.034

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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.

引用

页码：728 / 732

页数：5

共 23 条

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