Structural Characterization and Luminescence Properties of Ca2MgSi2O7 (CMS) Phosphor

S. Sharma¹ , S.K. Dubey² , A.K. Diwakar³ , Sanjay Pandey⁴

Section:Research Paper, Product Type: Journal-Paper
Vol.9 , Issue.6 , pp.49-53, Dec-2021

Online published on Dec 31, 2021

Copyright © S. Sharma, S.K. Dubey, A.K. Diwakar, Sanjay Pandey . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
Ca2MgSi2O7 (CMS) phosphor was successfully synthesized via traditional solid-state reaction technique. 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 studies obtained for this phosphor revealed its tetragonal, akermanite structure with a space group PÂŻ421m. It is observed that the XRD pattern matched well with JCPDS file No. 77-1149. The average crystallite size (D) is calculated as 26.33nm and lattice strain as 0.29. SEM images reveal that the surface morphology of the particles was not uniform and they aggregated tightly with each other. The actual formation and identification of the functional group of phosphor was confirmed by Fourier transform infrared spectroscopy. The host CMS phosphor shows very poor PL emission intensity obtained in blue region at 462 nm wavelength and CIE chromaticity diagram displays the purple-blue light color emission of this phosphor. In this research paper, the XRD, SEM, FTIR and Photoluminescence (PL) properties as well as CIE chromaticity diagram of this phosphor are also reported.

Key-Words / Index Term :
Photoluminescence (PL), CIE Chromaticity Diagram, XRD, FTIR, Ca2MgSi2O7, Akermanite, Solid-State Reaction.

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