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Studies of luminescence property of long afterglow Eu 2+ , Dy 3+ activated Sr 2 MgSi 2 O 7 phosphor

Studies of luminescence property of long afterglow Eu 2+ , Dy 3+ activated Sr 2 MgSi 2 O 7 phosphor Long afterglow Sr 2 MgSi 2 O 7 (SMS) phosphor was prepared by Douby's methods at high temperature and reductive atmosphere. The excitation and emission spectra of this phosphor showed that both had broad bands and that the main emission peak at 469 nm was due to 4f‐5d transitions of Eu +2 and implied that the luminescence centres Eu +2 occupied the Sr +2 sites in the Sr 2 MgSi 2 O 7 host. The phosphor doped only with Eu ions did not demonstrate the long afterglow phenomenon, but when co‐doped with Dy +3 ions in the SMS matrix, significant long afterglow was observed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Pigment & Resin Technology Emerald Publishing

Studies of luminescence property of long afterglow Eu 2+ , Dy 3+ activated Sr 2 MgSi 2 O 7 phosphor

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Publisher
Emerald Publishing
Copyright
Copyright © 2004 Emerald Group Publishing Limited. All rights reserved.
ISSN
0369-9420
DOI
10.1108/03699420410546908
Publisher site
See Article on Publisher Site

Abstract

Long afterglow Sr 2 MgSi 2 O 7 (SMS) phosphor was prepared by Douby's methods at high temperature and reductive atmosphere. The excitation and emission spectra of this phosphor showed that both had broad bands and that the main emission peak at 469 nm was due to 4f‐5d transitions of Eu +2 and implied that the luminescence centres Eu +2 occupied the Sr +2 sites in the Sr 2 MgSi 2 O 7 host. The phosphor doped only with Eu ions did not demonstrate the long afterglow phenomenon, but when co‐doped with Dy +3 ions in the SMS matrix, significant long afterglow was observed.

Journal

Pigment & Resin TechnologyEmerald Publishing

Published: Aug 1, 2004

Keywords: Chemical analysis and testing; Luminescence

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