Preparation, structure analysis and photoluminescence properties of MgGa2O4:Mn2+

被引：87

作者：

Costa, G. K. B. ^{[1
]}

Pedro, S. S. ^{[1
]}

Carvalho, I. C. S. ^{[2
]}

Sosman, L. P. ^{[1
]}

机构：

[1] Univ Estado Rio de Janeiro, Inst Fis, BR-20559900 Rio De Janeiro, Brazil

[2] Pontificia Univ Catolica Rio de Janeiro, Dept Fis, BR-22453900 Rio De Janeiro, Brazil

来源：

OPTICAL MATERIALS | 2009年 / 31卷 / 11期

关键词：

Ceramics; Mn2+; Photoluminescence; Excitation; OPTICAL SPECTROSCOPY; LUMINESCENCE; MN2+; CONFIGURATION; SPECTRA; EPR;

D O I：

10.1016/j.optmat.2009.03.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work the photoluminescence and excitation spectra at room temperature of the spinel-type MgGa2O4 with 0.5% and 10.0% of Mn2+ have been studied. The polycrystalline samples were synthesized by standard solid-state reaction methods at high temperature. The photoluminescence spectra exhibit green and red emissions for both samples, attributed to T-4(1)((4)G) -> (6)A(1)(S-6) transition of Mn2+ ion in tetrahedral and octahedral sites of oxygen, respectively. The excitation spectra exhibit features unambiguously assigned to d-d transitions of Mn2+ in those kinds of sites. From the excitation spectra and Tanabe-Sugano matrices the crystal field Dq and Racah B parameters were obtained. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1620 / 1627

页数：8

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