Photoluminescence properties of Sr2SiO4:Eu2+, Dy3+ phosphors

Abstract

In the present paper, PL study of Dy3+ doped Sr2SiO4:Eu2+ phosphor is reported. A polycrystalline sample of Sr2SiO4:Eu2+, Dy3+ was prepared by combustion method. The obtained phosphor was characterized by powder X-ray diffraction, Scanning Electron Microscopy, UV Vis-spectroscopy, and photoluminescence. The results of the XRD studies obtained for Sr2SiO4:Eu2+, Dy3+ phosphor revealed its monoclinic structure. The average crystallite size was calculated as 12.77 nm. Photoluminescence study was carried out for the phosphor using UV irradiation and a single glow peak was found. The photoluminescence glow curves of the samples were measured at various concentrations of co-dopant. In this paper, the photoluminescence and afterglow behavior of these phosphors are reported.