Improving the stability of alkaline earth sulfide-based phosphors

被引：46
|
作者：
Guo, CF [1 ]
Chu, BL [1 ]
Su, Q [1 ]
机构：
[1] Sun Yan Sen Univ, Dept Chem, Sch Cheh & Chem Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2004年 / 225卷 / 1-4期
关键词：
sulfide; coating; phosphor; stability and surface;
D O I：
10.1016/j.apsusc.2003.10.008
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Alkaline earth sulfide-based red-emitting phosphor Ca0.8Sr0.2S:Eu2+, Tm3+ were coated directly by ZnO and Al2O3 Particles to prevent PL intensities degradation under the effects from moist air. The PL intensities degradation of phosphors modified with oxides particles was reduced to different extents, in comparison with that of uncoated phosphor. SEM (scanning electron microscopy), powder XRD (X-ray diffraction) and EDX (energy dispersive X-ray) methods were used to characterize the coating. (C) 2003 Elsevier B.V. All rights reserved.
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页码：198 / 203
页数：6
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