Luminescence properties of Eu3+- and Mg2+-doped LiTaO3 obtained via the polymeric precursor method

被引：35

作者：

Gasparotto, G. ^{[1
]}

Lima, S. A. M. ^{[1
]}

Davolos, M. R. ^{[1
]}

Varela, J. A. ^{[1
]}

Longo, E. ^{[1
]}

Zaghete, M. A. ^{[1
]}

机构：

[1] UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil

来源：

JOURNAL OF LUMINESCENCE | 2008年 / 128卷 / 10期

基金：

巴西圣保罗研究基金会;

关键词：

ferroelectrics; photoluminescence; rare earth;

D O I：

10.1016/j.jlumin.2008.03.005

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This work reports the pure lithium tantalate (LiTaO3), europium (III)-doped LiTaO3 and magnesium (II)-europium (III)-doped LiTaO3 preparation by the polymeric precursor method, using four different powered samples of Eu3+ ion concentrations 0.1 and 1 at%, observing their effect on the luminescent property of the material. Results indicated LiTaO3 phase free of secondary phases at 650 degrees C and the photoluminescence (PL) emission spectra showed the characteristic sharp emission bands given by Eu3+ ions when they are excited at a wavelength of 399 rim. An increase of dopants led its to a non-homogeneous broadening and showed a slightly larger one when Mg was added. A displacement of the transition D-5(0) --> F-7(0) to shorter wavelengths as function of Eu3+ concentration was also noticed. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1606 / 1610

页数：5

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