Patra, Amitava and Baker, G A and Baker, S N (2004) Synthesis and luminescence study of Eu3+ in Zn2SiO4 nanocrystals. Optical Materials , 27 (1). pp. 15-20. ISSN 0925-3467

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Abstract

The sol-emulsion-gel method is used for the preparation of Eu3+ doped Zn2SiO4 nanoparticles. The luminescence spectra at 613 nm (D-5(0) —> F-7(2)) and lifetime of the excited state of Eu3+ ions doped Zn2SiO4 nanocrystals are also found to be sensitive to the concentration (0.25-2.5 mol%) of ions. In case of 1000 degreesC annealed sample (0.25 mol% Eu3+) showed the single component decay of 2.02 ms. However, with increasing the concentration the decay is biexponential. We attribute this to an inter-ion exchange interaction wherein the more rapid decay is due to pair or cluster formation and the longer-lived emission originates from isolated ions within the insulating host. (C) 2004 Elsevier B.V. All rights reserved.

Item Type:	Article
Subjects:	Physical Properties
Divisions:	Sol Gel
Depositing User:	Subhra Lahiri
Date Deposited:	27 Jan 2012 12:59
Last Modified:	21 Nov 2012 06:34
URI:	http://cgcri.csircentral.net/id/eprint/539

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