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Clabau, F., Garcia, A., Bonville, P., Gonbeau, D., Le Mercier, T., Deniard, P. & Jobic, S. (2008) Fluorescence and phosphorescence properties of the low temperature forms of the MAl(2)Si(2)O(8): Eu(2+) (M = Ca, Sr, Ba) compounds. J. Solid State Chem. 181 1456–1461. 
Added by: Laurent Cournède (2016-03-10 21:58:41)
Type de référence: Article
DOI: 10.1016/j.jssc.2008.03.011
Numéro d'identification (ISBN etc.): 0022-4596
Clé BibTeX: Clabau2008
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Catégories: MIOPS
Mots-clés: aluminate, caal2si2o8, defect conglomeration, dy3+, eu2+, fluorescence, inorganic-compounds, ions, long afterglow phosphor, MAl(2)Si(2)O(8) (M=Ca, mechanism, persistent luminescence, Phosphorescence, red, SrBa)
Créateurs: Bonville, Clabau, Deniard, Garcia, Gonbeau, Jobic, Le Mercier
Collection: J. Solid State Chem.
Consultations : 8/454
Indice de consultation : 2%
Indice de popularité : 0.5%
Résumé     
The fluorescence and phosphorescence properties of Europium-doped MAl(2)Si(2)O(8) (M = Ca, Sr, Ba) are reinvestigated and discussed on the basis of the propensity of an activator to agglomerate with an oxygen vacancy. Due to a stronger attraction of the anion vacancy towards Eu(2+) cations going from BaAl(2)Si(2)O(8') to SrAl(2)Si(2)O(8) and CaAl(2)Si(2)O(8) host lattices, the interpretation of the fluorescence spectra turns out to be less trivial in the Ca and Sr host lattices than in the Ba one and requests the account for Eu(2+) cations lying at alkaline-earth sites with or without vacancy in their neighborhood. Phosphorescence in these compounds is highlighted. (c) 2008 Elsevier Inc. All rights reserved.
Added by: Laurent Cournède  
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