Local structure and photoluminescent characteristics of Eu3+ in ZnO-SiO2 glasses

被引：10

作者：

Yu, Lixin ^{[1
]}

Nogami, Masayuki ^{[1
]}

机构：

[1] Nagoya Inst Technol, Dept Mat Sci & Engn, Nagoya, Aichi 4668555, Japan

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2007年 / 43卷 / 03期

关键词：

Eu3+; ZnO-SiO2; luminescence; sol-gel method;

D O I：

10.1007/s10971-007-1581-3

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The photoluminescence properties of xZnO-(100-x)SiO2 (x = 0, 5, 10, 20) containing 1% Eu2O3 prepared by a sol-gel method were systematically investigated. The results indicated that the relative proportion of f-f transitions to charge transfer (CT) absorption decreased with the increase of ZnO concentration. The intensity of D-5(0)-F-7(J) transitions of Eu3+ ions was enhanced with the increase of ZnO content due to local structure changes and decreased quantities of Eu3+ ions clusters. The results of fluorescence line narrow (FLN) spectra indicated that Eu3+ ions occupied one site in SiO2 glass and two sites in ZnO-SiO2 glasses. The second-order crystal field parameters were calculated. B-20 and B-22 for site 1 increased with excitation energy, while ones hardly changed for site 2.

引用

页码：355 / 360

页数：6

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