Abstract
This paper reports the structural, spectral and photometric parameters of Eu3+ doped gadolinium gallium garnet (GGG) phosphor synthesized by combustion synthesis method and post annealed at three different temperatures. The XRD studies show the lattice formation of GGG phosphor with body centered cubic structure. Rietveld refinement and analytical calculation of different structural parameters were performed to get the idea about the rare earth substitution in host matrix. The band gap of the phosphor was calculated from diffuse reflectance spectra using the Kubelka–Munk function. The characteristic red luminescence corresponding to 5D0→7FJ (J=1, 2) transitions of Eu3+ was observed after irradiation with UV light. The various analytical parameters such as Judd–Ofelt intensity, spectral and CIE were estimated from the photoluminescence data.
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