Novel White Light Emitting (Ca2MgSi2O7:Dy3+) Phosphor

Abstract

Ca2MgSi2O7:Dy3+ (CMSD) white light emitting phosphor was synthesized by combustion route process. In order to find out the phase purity and crystal structure, characterization of the prepared powder samples was done by X-ray diffraction (XRD) technique. The results of the XRD study obtained for CMSD phosphor revealed its tetragonal crystal structure with a space group P4̅21m. XRD pattern well matched with the help of standard JCPDS Pdf file No. 17-1149. The average crystallite size was calculated as 28.71nm and strain as 0.27. The actual structure formation and identifying functional group was confirmed by Fourier transform infrared spectroscopy. The FTIR results confirms that the synthesized phosphor has a better phase formation and this phosphor contains chemical bonds and Functional group such as (Mg-O), (Si-O), (O-Si-O) and (CO32-), (O-H) as well as (SiO4). The prepared phosphor was excited at 357 nm and their corresponding emission spectra were recorded at blue (476 nm), yellow (578 nm) and red (615 nm) spectral line peaking due to the 4F9/2 → 6H15/2, 4F9/2 → 6H13/2, 4F9/2 → 6H11/2, transitions of Dy3+ ions respectively. In this paper, structural characterizations such as XRD, FTIR, and optical properties like photoluminescence spectra of this phosphor are also reported.