Persistent luminescence in MSi2O2N2:Eu phosphors

被引：66

作者：

Botterman, Jonas ^{[1
,2
]}

Van den Eeckhout, Koen ^{[1
,2
]}

Bos, Adrie J. J. ^{[3
]}

Dorenbos, Pieter ^{[3
]}

Smet, Philippe F. ^{[1
,2
]}

机构：

[1] Univ Ghent, LumiLab, Dept Solid State Sci, B-9000 Ghent, Belgium

[2] Univ Ghent, Ctr Nano & Biophoton NB Photon, B-9000 Ghent, Belgium

[3] Delft Univ Technol, Fac Sci Appl, NL-2629 JB Delft, Netherlands

来源：

OPTICAL MATERIALS EXPRESS | 2012年 / 2卷 / 03期

关键词：

SR;

D O I：

10.1364/OME.2.000341

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work we study the persistent luminescence properties of europium-doped alkaline earth silicon oxynitrides (CaSi2O2N2, SrSi2O2N2 and BaSi2O2N2). All compounds show afterglow emission, with an emission spectrum which is similar to the steady state photoluminescence. The afterglow decay time for BaSi2O2N2:Eu and SrSi2O2N2:Eu is about 50 and 100 minutes respectively, while for CaSi2O2N2:Eu the afterglow intensity is very low. Although the persistent luminescence can be induced by ultraviolet light (250-300 nm) in all three phosphors, only for BaSi2O2N2:Eu low energy radiation (350-500 nm) allows filling of the traps responsible for the afterglow. (C) 2012 Optical Society of America

引用

页码：341 / 349

页数：9

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