Preparation, structure and optical properties of Pr:Gd2O3 phosphor

被引：11
|
作者：
Su, Jing [1 ]
Yang, Xiao-feng [2 ]
Wang, Ling [1 ]
Wang, Chu-qin [1 ]
Ji, Yu-qing [1 ]
机构：
[1] Nanjing Univ Informat Sci & Technol, Coll Math & Phys, Nanjing 210044, Peoples R China
[2] Gansu Rare Earth New Mat Ltd Liabil Co, Ctr Tech, Baiyin 730922, Peoples R China
来源：
MATERIALS LETTERS | 2011年 / 65卷 / 19-20期
基金：
中国国家自然科学基金;
关键词：
Phase transformation; Optical materials and properties; PHOTOLUMINESCENCE;
D O I：
10.1016/j.matlet.2011.06.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Pr3+-doped Gd2O3 phosphor powders were prepared by co-precipitation method. Their structures during heat-treatments were studied by XRD and IR methods. The pH was optimized to be 8 in the co-precipitation process and the hydroxide precursors were transformed into pure phase cubic Gd2O3 at 500 degrees C for 1 h. Optical properties of Pr:Gd2O3 phosphor powders were reported. The main emission bands are assigned to 1D(2) -> 3H(4), 3P(0) -> 3H(6), 3p(0) -> 3F(2) transition of Pr3+ under excitation at 255 and 488 nm. The emission intensities increase with increasing sintering temperature. Concentration quenching appears as the Pr3+ doping-concentration up to 1 at.%. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：2852 / 2854
页数：3
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