Structural and Luminescence Properties of (Ba, Ca) Sio4: Dy3+ Phosphors for White Light Applications

Authors: Golja DR*, Dejene FB and Hussen MK

DOI: 10.23880/psbj-16000238

Volume 7, Issue 1

Abstract

In this report monocrystalline white-emitting phosphors Ba1.3Ca0.7SiO4: 0.03Dy3+ were synthesized by a low temperature solution combustion method. The thermal, structural parameters and optical properties of the obtained phosphors were characterized by TGA, FTIR, XRD, SEM, EDS, TL, and PL. The mass of the Ba1.3Ca0.7SiO4 (host) sample as a function of temperature and the characteristic information about the composition kinetic analysis of thermal decomposition has provided by TGA. The characteristic spectrum of the sample was examined by FTIR. The structural parameters and appropriateness of the phase formation characterized by XRD. Photoluminescence spectra revealed strong transition at 482 nm (4F9/2 →6H15/2), 575 nm (4F9/2 →6H13/2) and weak transition at 710 nm (4F9/2 →6H15/2). The simulated CIE chromaticity coordinate of Ba1.3Ca0.7SiO4:0.03Dy3+ falls in the white light region. The TL glow curve, the UV ray induced to the phosphor, and effect of dose response recorded for UV time exposure.

Keywords: Solution Combustion; Thermogravimetric; Thermoluminescence; White Light Emitting

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