Author(s): Sanjay Kumar Dubey, Shashank Sharma and AK Diwakar

Abstract: Ba2MgSi2O7: Eu2+, Dy3+ phosphor was synthesized by combustion reaction technique. Phase identification was done by X-ray diffraction analysis and its results revealed monoclinic structure with a space group C2/c. This structure is a member of melilite group. The average crystallite size (D) is calculated as 29.10 nm and lattice strain as 0.30. The functional group identification of this phosphor with the help of FTIR spectroscopy. When the Ba2MgSi2O7:Eu2+, Dy3+ phosphor was excited with 395nm wavelength single broad emission peak situated at 520 nm was obtained. PL and CIE chromaticity diagram clearly indicates that the bright green emission was observed near UV region. Thermo-luminescence (TL) of the UV-irradiated (254 nm) samples was recorded with the help of routine TL set-up Nucleonix TLD reader with constant heating rate 50Cs-1. The optimum TL intensity assigned at 100.12 oC temperature and displays single TL glow curve peak. The favorable features for applications likewise near UV-LED conversion phosphor, Image processing of computer science and found their considerable persistency etc. In this present paper, XRD, FTIR, PL, CIE Chromaticity Diagram, TL properties of the phosphor also reported.

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