Issue 1, 2012
From the journal:

RSC Advances

Enhancement of afterglow in SrAl2O4:Eu2+ long-lasting phosphor with swift heavy ion irradiation

Tianzhuo Zhan,a   Chao-Nan Xu,*abc   Hiroshi Yamada,ab   Yujin Terasawa,a   Lin Zhang,b   Hiroshi Iwased  and  Masayoshi Kawaid  

* Corresponding authors

a Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1, Kasugakoen, Kasuga, Fukuoka, Japan
E-mail: cn-xu@aist.go.jp

b National Institute of Advanced Industrial Science and Technology (AIST), Kyushu, 807-1, Shuku, Tosu, Saga, Japan

c CREST, Japan Science and Technology Agency (JST), 4 Honcho, Kawaguchi, Saitama, Japan

d High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki, Japan

Abstract

We present a novel approach for improving the afterglow of long-lasting phosphors with swift heavy ion irradiation. The afterglow of famous long-lasting phosphor SrAl2O4:Eu2+ was dramatically enhanced with swift heavy ion irradiation. Furthermore, it was found that the enhancement was dependent on the electronic stopping power as well as the irradiation fluence. Thermoluminescence analyses revealed that the SHI irradiation had no significant influence on the trap depth, but increased the trap density in the phosphor. In addition, the mechanism underlying afterglow enhancement phenomenon was discussed.

Graphical abstract: Enhancement of afterglow in SrAl2O4:Eu2+ long-lasting phosphor with swift heavy ion irradiation

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Article information

DOI
https://doi.org/10.1039/C1RA00426C
Article type
Paper
Submitted
07 Jul 2011
Accepted
19 Sep 2011
First published
04 Nov 2011

RSC Adv., 2012,2, 328-332

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Enhancement of afterglow in SrAl2O4:Eu2+ long-lasting phosphor with swift heavy ion irradiation

T. Zhan, C. Xu, H. Yamada, Y. Terasawa, L. Zhang, H. Iwase and M. Kawai, RSC Adv., 2012, 2, 328 DOI: 10.1039/C1RA00426C

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