Sahoo, R and Bhattacharya, S K and Debnath, Radhaballabh (2003) A new type of charge compensating mechanism in Ca-5(PO4)(3)F : Eu3+ phosphor. Journal of Solid State Chemistry, 175 (2). pp. 218-225. ISSN 0022-4596

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Abstract

The X-ray powder diffraction, reflectance, photoluminescence, photoluminescence excitation and ESR spectra of Ca-5(PO4)(3) F:Eu3+ phosphor have been studied. Three distinct variants of calcium substitutional Eu3+-sites have been observed in this host and the charge compensating species related to each of these sites has been identified. It is noted that the host related trace impurities those have prospects of acting as charge compensator, and the reaction environment that exists during the preparation of the material, greatly influence the preferential substitution of different Ca2+-sites by the Eu3+ ions. It is also noted that the charge compensating species in a suitable case, takes part in the photophysical process of luminescence of the Eu3+. (C) 2003 Elsevier Inc. All rights reserved

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	Glass
Depositing User:	Subhra Lahiri
Date Deposited:	02 Mar 2012 06:21
Last Modified:	02 Mar 2012 06:21
URI:	http://cgcri.csircentral.net/id/eprint/1097

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