Degradation proof modification of ZnS-based phosphors with ZnO nanoparticles

被引：34

作者：

Igarashi, T

Kusunoki, T

Ohno, K

Isobe, T

Senna, M

机构：

[1] Sony Corp, Atsugi, Kanagawa 2430021, Japan

[2] Keio Univ, Fac Sci & Technol, Dept Appl Chem, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan

来源：

MATERIALS RESEARCH BULLETIN | 2001年 / 36卷 / 7-8期

关键词：

ZnS : Ag; Cl; ZnO; nanosize particles; degradation;

D O I：

10.1016/S0025-5408(01)00599-2

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

ZnS:Ag,Cl phosphor particles were coated discretely by ZnO nanoparticles to prevent degradation by electron bombardment at 7kV. The degradation of ZnS:Ag,Cl modified with ZnO nanosize particles was reduced by 40% after 9h exposure to 7kV electron beams, in comparison with that without ZnO nanosize particles. The predominant mechanism of degradation prevention is to suppress surface oxidation of ZnS by residual oxygen during cathodoluminescence (CL) experiment. Increased electric conduction and associated protection from local heating are the main reasons for degradation suppression, as confirmed by experimental measurement of degradation for the insulating ZnS:Ag,Cl phosphor. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：1317 / 1324

页数：8

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