Synthesis of Y2O3:Eu3+ coated Y2O3 phosphors by urea-assisted homogeneous precipitation and its photoluminescence properties

被引：24

作者：

Liu, Wenjing ^{[1
]}

Wang, Yuhua ^{[1
]}

Zhang, Mingqi ^{[1
]}

Zheng, Yunxian ^{[1
]}

机构：

[1] Lanzhou Univ, Sch Phys Sci & Technol, Dept Mat Sci, Lanzhou 730000, Peoples R China

来源：

MATERIALS LETTERS | 2013年 / 96卷

关键词：

Y2O3:Eu3+ coating; Phosphors; Homogeneous precipitation; Luminescence; LUMINESCENCE PROPERTIES; PARTICLES; LAMPS;

D O I：

10.1016/j.matlet.2012.12.104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Y2O3:Eu3+ is an excellent red-emitting phosphor which has been widely used for display and lighting devices. However the production cost is high due to the high concentration of the expensive Eu activator. In order to reduce the producing cost, Y2O3:Eu3+ coated Y2O3 particles are prepared by urea-assisted homogeneous precipitation. The synthesis process involves dispersing of Y2O3 particles in a reacting medium, precipitating (Y,Eu)(OH)CO3 on the surface of Y2O3 particles through homogeneous precipitation of Y3+ and Eu3+ using urea as the precipitator, and transferring (Y,Eu)(OH)CO3 to Y2O3:Eu3+ by annealing at 900 degrees C for 3 h. Scanning electron microscopy (SEM) images and photoluminescence spectra (PL) indicate that Y2O3:Eu3+ coated Y2O3 particles with good luminescence property are synthesized successfully. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：42 / 44

页数：3

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