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Abstract
Abstract The Eu3+ doped BaMgSiO4 powder phosphors are synthesized by the high temperature and conventional solid state reaction method (SSRM). The X-ray diffraction (XRD) for phase determination, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) for morphological investigation, energy dispersive X-ray (EDX) analysis for elemental composition and Fourier transform infrared (FT-IR) and Raman spectroscopy for bonding details are used to characterize the samples. In the photoluminescence (PL) spectra of the as-synthesized phosphors, two characteristic emission peaks recorded at 596 nm and 614 nm are attributed to 5D0 → 7F1 (orange region) and 5D0 → 7F2 (red region) of Eu3+ ions. The BaMgSiO4: Eu3+ exhibits enhancement in PL intensity, which is quenched at 5 mol% of Eu3+ ions. The Commission Internationale d’Eclairage (CIE) chromaticity coordinates of a BaMgSiO4: Eu3+ excited at 396 nm (7F0 →5L6) wavelengths present a red-shift with increasing concentration of Eu3+ ions. Thermoluminescence (TL) glow curves are recorded and TL parameters are estimated using peak shape method. Apart from these, correlated color temperature (CCT) and color rendering index (CRI) are also computed and analyzed using CIE coordinates.
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