Luminescent sol-gel thin films based on europium-substituted heteropolytungstates

被引：40

作者：

Wang, Z ^{[1
]}

Wang, J

Zhang, HJ

机构：

[1] Hubei Univ, Fac Chem & Mat Sci, Wuhan 430062, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab Rare Earth Chem & Phys, Changchun 130022, Peoples R China

[3] Katholieke Univ Leuven, Ctr Oppervalktechem Katalyse, B-3001 Heverlee, Belgium

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2004年 / 87卷 / 01期

关键词：

luminescence; sol-gel; europium; polyoxometalate;

D O I：

10.1016/j.matchemphys.2004.04.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polyester thin films containing europium-substituted heteropolytungstate were obtained on quartz plate by the sol-gel method. The films exhibited the characteristic emission bands of the europium ion. The red to orange intensity ratio (R:O) of Eu3+ in the films increased as compared to the corresponding heteropolytungstate solids. The fluorescence lifetime of europium is shorter in the thin film than in the heteropolytungstate solid. The results indicated that the formation of europium-substituted heteropolytungstate/polyester thin film has great effect on the luminescence of europium- substituted heteropolytungstate. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：44 / 48

页数：5

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