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

页码：2852 / 2854

页数：3

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