X-ray absorption study of rare earth ions in Sr2MgSi2O7:Eu2+,R3+ persistent luminescence materials
(2009) In Optical Materials 31(12). p.1877-1879- Abstract
- The valence of the europium dopant and selected rare earth co-dopants (Ce3+, Dy3+, and Yb3+) in the Sr2MgSi2O7:Eu2+,R3+ persistent luminescence materials were studied by room temperature XANES measurements. The results indicated the co-existence of both divalent and trivalent europium in all the studied materials. The relative amount of Eu3+ was observed to increase upon increasing exposure to X-rays, as expected by the persistent luminescence mechanism. This suggests a simultaneous filling of oxygen vacancies initially created by the reducing preparation conditions. For the Dy and Yb co-dopants, only trivalent species were observed. On the other hand, traces of tetravalent cerium were present in the Eu,Ce co-doped materials. (c) 2009... (More)
- The valence of the europium dopant and selected rare earth co-dopants (Ce3+, Dy3+, and Yb3+) in the Sr2MgSi2O7:Eu2+,R3+ persistent luminescence materials were studied by room temperature XANES measurements. The results indicated the co-existence of both divalent and trivalent europium in all the studied materials. The relative amount of Eu3+ was observed to increase upon increasing exposure to X-rays, as expected by the persistent luminescence mechanism. This suggests a simultaneous filling of oxygen vacancies initially created by the reducing preparation conditions. For the Dy and Yb co-dopants, only trivalent species were observed. On the other hand, traces of tetravalent cerium were present in the Eu,Ce co-doped materials. (c) 2009 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1504844
- author
- Carlson, Stefan LU ; Holsa, Jorma ; Laamanen, Taneli ; Lastusaari, Mika ; Malkamaki, Marja ; Niittykoski, Janne and Valtonen, Riikka
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Dysprosium, Cerium, Europium, Persistent luminescence, XANES, Ytterbium
- in
- Optical Materials
- volume
- 31
- issue
- 12
- pages
- 1877 - 1879
- publisher
- Elsevier
- external identifiers
-
- wos:000271367700037
- scopus:70349094889
- ISSN
- 0925-3467
- DOI
- 10.1016/j.optmat.2008.12.020
- language
- English
- LU publication?
- yes
- id
- 5e32b60a-ac15-4943-80e1-3fc0c493d886 (old id 1504844)
- date added to LUP
- 2016-04-01 14:18:03
- date last changed
- 2022-02-19 18:17:42
@article{5e32b60a-ac15-4943-80e1-3fc0c493d886,
abstract = {{The valence of the europium dopant and selected rare earth co-dopants (Ce3+, Dy3+, and Yb3+) in the Sr2MgSi2O7:Eu2+,R3+ persistent luminescence materials were studied by room temperature XANES measurements. The results indicated the co-existence of both divalent and trivalent europium in all the studied materials. The relative amount of Eu3+ was observed to increase upon increasing exposure to X-rays, as expected by the persistent luminescence mechanism. This suggests a simultaneous filling of oxygen vacancies initially created by the reducing preparation conditions. For the Dy and Yb co-dopants, only trivalent species were observed. On the other hand, traces of tetravalent cerium were present in the Eu,Ce co-doped materials. (c) 2009 Elsevier B.V. All rights reserved.}},
author = {{Carlson, Stefan and Holsa, Jorma and Laamanen, Taneli and Lastusaari, Mika and Malkamaki, Marja and Niittykoski, Janne and Valtonen, Riikka}},
issn = {{0925-3467}},
keywords = {{Dysprosium; Cerium; Europium; Persistent luminescence; XANES; Ytterbium}},
language = {{eng}},
number = {{12}},
pages = {{1877--1879}},
publisher = {{Elsevier}},
series = {{Optical Materials}},
title = {{X-ray absorption study of rare earth ions in Sr2MgSi2O7:Eu2+,R3+ persistent luminescence materials}},
url = {{http://dx.doi.org/10.1016/j.optmat.2008.12.020}},
doi = {{10.1016/j.optmat.2008.12.020}},
volume = {{31}},
year = {{2009}},
}