Saha Chowdhury, Paramita and Saha, S and Patra, Amitava (2005) The role of semiconducting hosts on photoluminescence efficiency of Eu-complex. Chemical Physics Letters, 405 (4-6). pp. 393-397. ISSN 0009-2614

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Abstract

The energy transfer from the semiconducting hosts, poly (N-vinylcarbazole) (PVK), 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (PBD) and a mixture of PVK and PBD blend matrix to Eu-Complex [Eu (TTA)(3)(Phen)] is investigated by steady state and time resolved photoluminescence spectroscopy. The emission intensity of the peak at 612 nm (D-5(0) -> F-7(2)) of Eu-ions and the photoluminescence efficiency are found to be sensitive to the nature of hosts. We found that the luminescence lifetimes of D-5(0) -> F-7(2) transition (612 nm) of Eu-ions are 580, 634 and 427 mu s for Eu-complex (0.11 wt%) doped PVK:PBD, PBD and PVK matrix, respectively. The analysis suggests that the energy transfer from PBD to europium complex is most efficient than PVK and PVK:PBD matrix. (c) 2005 Elsevier B.V. All rights reserved.

Item Type:	Article
Subjects:	Processing Science
Divisions:	UNSPECIFIED
Depositing User:	Bula Ghosh
Date Deposited:	15 Feb 2012 08:50
Last Modified:	15 Feb 2012 08:50
URI:	http://cgcri.csircentral.net/id/eprint/870

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