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Synthesis and Photoluminescence Properties of Eu3+ activated Ce0.5Al0.5O2-delta Nanophosphors for WLEDs Application

Saraf, Rohit and Shivakumara, C and Dhananjaya, N and Behera, Sukanti and Nagabhushana, H (2015) Synthesis and Photoluminescence Properties of Eu3+ activated Ce0.5Al0.5O2-delta Nanophosphors for WLEDs Application. In: 59th DAE Solid State Physics Symposium, DEC 16-20, 2014, VIT Univ, Vellore, INDIA.

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Official URL: http://dx.doi.org/10.1063/1.4917813

Abstract

A series of Eu3+ activated Ce0.5Al0.5O2-delta nanophosphors have been synthesized by the nitrate - citrate gel combustion method. All the compounds crystallized in the cubic fluorite CeO2 structure with space group Fm-3m (No. 225). FESEM revealed the flakes-like morphology. The average particle size was estimated from TEM studies and found to be in the range 15-25 nm. The values were in good agreement with the Scherer's method. In photoluminescence (PL) spectra, the D-5(0) -> F-7(2) (612 nm) transition dominates than other transitions which indicates that the Eu3+ ions occupy a site without inversion center. CIE chromaticity diagram confirmed that these nanophosphors can be useful in the fabrication of red component in white light emitting diodes (WLEDs).

Item Type: Conference Proceedings
Additional Information: Copy right for this article belongs to the AMER INST PHYSICS, 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
Keywords: Oxide materials; Nanophosphors; Combustion synthesis; Photoluminescence
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Depositing User: Id for Latest eprints
Date Deposited: 14 Jan 2016 04:31
Last Modified: 14 Jan 2016 04:31
URI: http://eprints.iisc.ac.in/id/eprint/53124

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