Structural, optical and thermal characteristics of M2MgSi2O7 (M = Ca) Nano phosphor prepared via low-temperature combustion synthesis technique

Abstract

Ca2MgSi2O7 (CMS) nano phosphor was prepared by Combustion Synthesis technique. XRD, SEM, EDX, FTIR, PL spectra and CIE Color Chromaticity Co-ordinate Diagram as well as TL characteristics have briefly investigated. The phase formation of synthesized sample was displayed P4̅21m space group with akermanite type tetragonal crystal structure. This crystal structure creates a layered compound. It belongs to mellite group. The average crystallite size (D) is calculated as 31.91nm and lattice strain as 0.25nm. The chemical composition of the synthesized phosphor was well clarified with the help of EDX spectroscopy. The actual phase formation and functional groups identification of this phosphor have been shown with the help of FTIR spectroscopy. In Photoluminescence (PL) characteristics such as Excitation and Emission spectra were also investigated. The phosphor displayed single emission peak at 472nm. The CIE chromaticity coordinates have calculated as [X = 0.2445, Y = 0.2679] respectively. The CIE diagram has shown that this phosphor approached to blue light luminescent color region. In Thermo luminescence (TL) study, the sample UV exposed for 15 min gives optimum TL intensity and single TL glow curve peak was allocated at 152.43°C temperature respectively, and this peak position remains constant with 15min UV irradiation time.