Alumina encapsulated SrAl2O4:Eu2+, DY3+ phosphors

被引：47
作者：
Lue, Xingdong [1 ]
Zhong, Minjuan
Shu, Wangen
Yu, Quanmao
Xiong, Xinqiang
Wang, Renqing
机构：
[1] Jiangxi Univ Finance & Econ, Inst Funct Mat, Nanchang 330013, Peoples R China
[2] Cent S Univ, Dept Chem & Chem Engn, Changsha 410083, Peoples R China
来源：
POWDER TECHNOLOGY | 2007年 / 177卷 / 02期
关键词：
encapsulation; alumina; strontium aluminate; chemical precipitation; afterglow;
D O I：
10.1016/j.powtec.2007.03.010
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Alumina encapsulation on SrAl2O4: Eu2+, Dy3+ phosphors by a new type of chemical precipitation process was reported for the first time to the best of our knowledge. X-ray fluorescent measurements revealed that using glycol instead of the distilled water as the disperse medium is helpful to alumina encapsulation. Scanning electron micrographs and BET measurements showed that a dense and homogeneous off-white alumina layer was formed on the phosphor surface after encapsulation. Water resistance and heat resistance measurements showed that when the encapsulation amount reached to 5 wt.% (fed value), the encapsulated phosphors began to show good water resistance and heat resistance with little loss of persistent phosphorescence. (C) 2007 Elsevier B.V.. All rights reserved.
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收藏
页码：83 / 86
页数：4
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