Visible photoluminescence of ZnO nanoparticles dispersed in highly transparent MgF2 thin-films via sol-gel process

被引：79
|
作者：
Fujihara, S [1 ]
Naito, H [1 ]
Kimura, T [1 ]
机构：
[1] Keio Univ, Fac Sci & Technol, Dept Appl Chem, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan
来源：
THIN SOLID FILMS | 2001年 / 389卷 / 1-2期
关键词：
coatings; fluorides; luminescence; nanostructures; zinc oxide;
D O I：
10.1016/S0040-6090(01)00893-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
ZnO/MgF2 nanocomposite thin films, where ZnO nanoparticles were dispersed in an MgF2 matrix, were prepared by a sol-gel method using metal acetates, isopropanol, trifluoroacetic acid, monoethanolamine and water as starting materials. The particle size of ZnO was approximately 6.2 nm, showing quantum size effects in the absorption edge measurement. Green photoluminescent (PL) emission from the films was observed at room temperature. The emission intensity was found to be greatly dependent on heat-treatment temperature and time. By optimizing the heating conditions, the film with high transparency and high PL intensity was obtained. Influence of the heating conditions on the formation of the ZnO nanoparticles and the green emission was discussed. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：227 / 232
页数：6
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