Luminescent properties of yttrium diphenylphosphinate activated by europium

被引:5
作者
Francisco, Cristina S. [1 ]
Stucchi, Elizabeth B. [1 ]
de Abreu, Edson M. [1 ]
机构
[1] UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil
基金
巴西圣保罗研究基金会;
关键词
yttrium diphenylphosphinate; luminescence spectroscopy; europium; quantum yield;
D O I
10.1016/j.jallcom.2005.10.067
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The synthesis and spectroscopic characterization of yttrium diphenylphosphinates doped with europium are reported. The purity of all samples was confirmed by carbon and hydrogen micro analysis, thermal analysis, IR vibrational spectroscopy, and X-ray diffraction. Luminescence spectra indicated the presence of two or more symmetry centers. The dynamic luminescence measurements suggested that one symmetry site presented an inversion center, while the others had lower symmetry. The average quantum yield of Eu3+ emission in the yttrium, matrices was 60%. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:234 / 237
页数:4
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