Energy transfer and heat-treatment effect of photoluminescence in Eu3+-doped TbPO4 nanowires

被引：74

作者：

Di, Weihua ^{[1
]}

Wang, Xiaojun

Zhu, Peifeng

Chen, Baojiu

机构：

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

[2] Dalian Maritime Univ, Dept Phys, Dalian 116026, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2007年 / 180卷 / 02期

基金：

中国国家自然科学基金;

关键词：

hydrothermal synthesis; thermal effect; rare earth; energy transfer; luminescence;

D O I：

10.1016/j.jssc.2006.11.006

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

We have successfully synthesized EU-doped TbPO4 nanowires, which are orderly organized to form bundle-like structure. A thermal treatment up to 600 degrees C does not modify the size, shape and structure of as-synthesized sample. Due to the energy overlap between Tb3+ and Eu3+, an efficient energy transfer occurs from Tb3+ to Eu3+. The effects of Eu3+ concentration and thermal treatment on the luminescent properties of Eu3+ are investigated. The increase of Eu3+ concentration leads to the increase of the energy transfer efficiency from Tb3+ to Eu3+, but also enhances the probability of the interaction between neighboring Eu3+, which results in the concentration quenching. With the heat-treatment, the luminescence of Eu3+ presents an obvious increase, but almost no change for the luminescence of Tb3+. This difference is explained based on the TGA, DTA, and fluorescent decay dynamics analyses. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：467 / 473

页数：7

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