The effect of doping La3+ on structure and luminescent properties of Sr2SiO4:Eu2+ phosphors

被引：20

作者：

Zhao, Cong ^{[1
,2
]}

Zhu, Da-chuan ^{[1
]}

Pu, Yong ^{[2
]}

Peng, Ling-ling ^{[2
]}

Han, Tao ^{[2
]}

Tu, Ming-jing ^{[1
,2
]}

机构：

[1] Sichuan Univ, Coll Mat Sci & Engn, Chengdu 610065, Sichuan, Peoples R China

[2] Chongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2015年 / 41卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Solid-state reaction method; Strontium silicate; Phosphors; Doping La3+; EMISSION; PHOTOLUMINESCENCE; ENHANCEMENT; EU2+;

D O I：

10.1016/j.ceramint.2015.07.119

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

La3+-doped strontium silicate phosphors, Sr1.995-1.5xLaxSiO4:0.005Eu(2+), have been prepared via a solid-state reaction method. The as-prepared samples have been characterized by XRD and spectrophotometer, respectively. The XRD result shows that doping La3+ results in the phase transformation (beta-Sr2SiO4 -> alpha'-Sr2SiO4). The emission spectrum of the un-doped sample contains two distinct single bands, which come from Eu2+ on the two kinds of Sr2+ sites in the host of phosphor. The two single bands merge together with the increasing of La3+. Moreover, the CIE chromaticity coordinates of emission spectrum move to green region with the increasing of La3+. Doping La3+ shows a potential for improving the performance of Sr2SiO4:Eu2+ phosphors. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：13341 / 13347

页数：7

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