Enhanced cathodoluminescent properties of ZnO encapsulated ZnS:Ag phosphors using an electrochemical deposition coating

被引:24
作者
Choi, HH [1 ]
Ollinger, M [1 ]
Singh, RK [1 ]
机构
[1] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32607 USA
关键词
D O I
10.1063/1.1567040
中图分类号
O59 [应用物理学];
学科分类号
摘要
An electrochemical deposition coating method was developed to encapsulate the surface of micron-sized ZnS:Ag particulates with nanosized ZnO particles. The particle size of the as-synthesized ZnO particles was estimated to be below 10 nm from x-ray powder diffraction and transmission electron microscopy. The thickness of coating layer was measured to be from a few nm to about 100 nm using transmission electron microscopy. X-ray photoelectron spectroscopy analysis demonstrated the presence of ZnO particle layers on the surface of ZnS:Ag particulates. With the use of this ZnO coating layer, the cathodoluminescent lifetime of ZnS:Ag phosphors was dramatically improved. (C) 2003 American Institute of Physics.
引用
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页码:2494 / 2496
页数:3
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