Fluorescence properties of Eu3+ ions doped borate and fluoroborate glasses containing lithium, zinc and lead

被引：86
|
作者：
Venkatramu, V [1 ]
Babu, P [1 ]
Jayasankar, CK [1 ]
机构：
[1] Sri Venkateswara Univ, Dept Phys, Tirupati 517502, Andhra Pradesh, India
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2006年 / 63卷 / 02期
关键词：
melt quenching; fluorescence properties; Eu3+ ions; crystal-field analysis; glass;
D O I：
10.1016/j.saa.2005.05.010
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The influence of glass composition on the fluorescence properties of Eu3+ ions doped borate and fluoroborate glasses modified with Li+, Zn2+ and Pb2+ cations have been investigated. The magnitude of splittings of F-7(1) levels are analyzed using crystal-field (CF) analysis. The relative intensities of 5D(0)-> F-7(2) to D-5(0)-> F-7(1) transitions, crystal-field strength parameters and decay times of the D-5(0) level have been determined and are found to be lower for Pb based glasses than those of Zn/Li based glasses. The lifetimes of D-1(0) level are found to increase when borate glasses are modified with pure fluorides than with oxides and oxyfluorides. The fluorescence decay of D-5(0) level fits perfect single exponential in the Eu3+:glass systems studied which indicates the absence of energy transfer between Eu3+ ions in these glasses. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：276 / 281
页数：6
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