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Novel Phosphors Of ALaLiWO6:Dy3+ (A = Sr2+ And Ba2+) For White Light Applications

Parag Nimishe, S.J. Dhoble

Volume 2, Issue 5, Page 358-361 | DOI: 10.5185/amlett.2011.3073am2011

Keywords: Phosphors; white lighting; photoluminescence; XRD, SEM

Abstract: 

In this paper we report the synthesis and luminescence of Dy3+ activated tungstates of the type ALaLiWO6 (where A = alkaline earth metals Sr and Ba), prepared by solid state diffusion reaction method. These novel luminescent tungstate materials were characterized by X-ray diffraction, scanning electron microscope (SEM) and photoluminescence (PL) techniques.   The Dy3+ activated ALaLiWO6 (where A = Sr and Ba) phosphors are effectively excited around  350 nm which is mercury free excitation in near UV and give a broad emission band peaking around 470 nm(blue region) along with  a sharp characteristic peak at 577 nm (yellow region). Thus, the Dy3+ activated ALaLiWO6 phosphors may be used in white light applications. Copyright © 2011 VBRI press.

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