Sharma, Suchinder K. and Pitale, Shreyas S. and Malik, M. Manzar and Rao, T. K. Gundu and Chawla, Santa and Qureshi, M. S. and Dubey, R. N. (2010) Spectral and defect analysis of Cu-doped combustion synthesized new SrAl4O7 phosphor. Journal of Luminescence , 130 (2). pp. 240-248. ISSN 0022-2313

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Abstract

A simple solution combustion synthesis route for preparation of Cu-doped SrAl4O7 has been described. Average particle size of 33 nm and platelet-like morphology has been observed. ESR studies confirm the presence of Cu in polycrystalline SrAl4O7. Bright-green luminescence under near-UV irradiation arising due to transition between Cu+ levels with microsecond level decay time makes it suitable for application in phosphor converted light emitting diode (LED). TL measurements show broad glow peaks which when deconvoluted indicate activation energies in the range of 0.6–1.1 eV and elucidate the trapping dynamics.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier B.V.
Uncontrolled Keywords:	Combustion synthesis; Strontium aluminate; ESR; F+ center; White LED applications
Subjects:	Optics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	10 Jul 2012 08:36
Last Modified:	10 Jul 2012 08:36
URI:	http://npl.csircentral.net/id/eprint/319

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