Singh, Vijay and Kumar, V. V. Ravi Kanth and Chakradhar, R P S and Kwak, Ho-Young (2010) Synthesis, characterization and photoluminescence of Eu3+, Ce3+co-doped CaLaAl3O7 phosphors. Philosophical Magazine, 90 (22). pp. 3095-3105. ISSN 1478-6435

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Abstract

Powder phosphors of CaLa1-xEuxAl3O7, CaLa1-xCexAl3O7 and CaLa0.99-xEuxCe0.01Al3O7, where x = 0.01, 0.03, 0.05 and 0.07, were prepared by a combustion method. The powders were well characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and photoluminescence techniques. Emission spectra of Eu3+-doped powder phosphors showed strong red emission at 613 nm (5D0 7F2); no concentration quenching was observed. Generally, Ce3+ acts as an efficient sensitizer when doped with other trivalent lanthanide ions. However, interestingly, in the CaLaAl3O7 powder phosphors, the addition of Ce3+ with Eu3+ exhibited an adverse effect-decreased photoluminescence intensity. The reasons for this behavior are discussed.

Item Type:	Article
Uncontrolled Keywords:	Combustion; XRD; SEM; Eu3+; Ce3+; Photoluminescence; CaLaAl3O7; Phosphors
Subjects:	Glass
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	16 Feb 2012 07:50
Last Modified:	29 Mar 2016 06:50
URI:	http://cgcri.csircentral.net/id/eprint/915

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