Add time:07/26/2019         Source:sciencedirect.com

Calcium stannates (Ca2SnO4), which has an inverse spinel structure, was adopted as the host material of emitting phosphor. Eu2O3–doped Ca2SnO4 (Ca2SnO4:xEu, 0.00-0.08) were prepared by solid-states reaction at 1350 °C under atmospheric air with constant dwell time of 6 The Rietveld analysis of the X-ray powder diffraction (XRD) was used for lattice parameters calculations and the XRD pattern results show that there was no phase transformation observed for all sintered Ca2SnO4: xEu3+ samples. Presence of Eu2O3 also improved sinterability of the produced ceramics as evidenced by their SEM micrographs. Luminescent spectra acquired at room temperature of all samples were observed in a broad range of a visible light wavelength region under ultraviolet light excitation. The ceramic samples produced by the present study showed the most intense light emission in the red light region.

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