Novel Phosphors Of ALaLiWO6:Dy3+ (A = Sr2+ And Ba2+) for white light applications Novel Phosphors Of ALaLiWO6:Dy3+ (A = Sr2+ And Ba2+) for white light applications

Novel phosphors of ALaLiWO6:Dy3+ (A = Sr2+ And Ba2+) for white light applications

Parag Nimishe, S.J. Dhoble*

Department of Physics, RTM Nagpur University, Nagpur 440033, India

Adv. Mater. Lett., 2011, 2 (5), pp 358-361

DOI: 10.5185/amlett.2011.3073am2011

Publication Date (Web): Apr 08, 2012

E-mail: paragnimishe@gmail.com, sjdhoble@rediffmail.com

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.

Keywords

Phosphors, white lighting, photoluminescence, XRD, SEM

Upcoming Congress

Knowledge Experience at Sea TM