Up-conversion and photoluminescence in Er3+ single crystal MgAl-spinel

被引：4

作者：

Mironova-Ulmane, N. ^{[1
]}

Sarakovskis, A. ^{[1
]}

Skvortsova, V. ^{[1
]}

机构：

[1] Latvian State Univ, Inst Solid State Phys, Kengaraga St 8, LV-1063 Riga, Latvia

来源：

17TH INTERNATIONAL CONFERENCE ON LUMINESCENCE AND OPTICAL SPECTROSCOPY OF CONDENSED MATTER (ICL2014) | 2015年 / 76卷

关键词：

MgAl2O4; up-conversion luminescence; erbium; energy transfer; ENERGY-TRANSFER; LUMINESCENCE; IONS; ABSORPTION; CERAMICS; GLASS;

D O I：

10.1016/j.phpro.2015.10.020

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Traditional and up-conversion luminescence of MgAl2O4 single crystal doped with erbium ions obtained by the Verneuil method has been investigated. The time resolved spectral measurements of the green and red up-conversion luminescence bands show that a build-up part is present in the up-conversion luminescence kinetics. This means that energy transfer process is involved in the creation of the luminescence. Considering rather small concentration of Er3+ in the material (0.12 mass %), the expected upconversion mechanism should be excited state absorption since the average distance between erbium ions is high. The abovementioned considerations suggest that clustering of the activator ions is present in the material, which is supported by SEM analysis. (C) 2015 The Authors. Published by Elsevier B.V.

引用

页码：106 / 110

页数：5

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