Abstract
Alkaline earth orthosilicate (Sr2SiO4) phosphor doped with Dy3+ was synthesized by a traditional high-temperature solid-state reaction method. XRDanalysis confirmed the formation of the phosphor with the orthorhombic crystal structure and their phase purity was checked using theoretical fitting Rietveld refinement. Zeta potential measurements of parent phosphor in different medium were performed to check its stability. The surface morphology and the elemental composition of the phosphors were examined using SEM and EDX, respectively. The optical behavior is determined by PL analysis. CIE coordinates of the phosphors represents the white light emission characteristics of Sr2SiO4: Dy3+ phosphors. Due to white light emission characteristic, this work will open a new window for its use in W-LED applications. Thermoluminescence (TL) behavior of phosphor was studied and its TL kinetic parameters were estimated based on computerized glow curve deconvolution (CGCD) fitting.
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