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Trivalent samarium (Sm 3+ ) doped Na3Gd(PO4)2 (NGP) phosphors were prepared by citrate gel combustion process. The structure, optical and energy transfer studies were systematically characterized through photoluminescence (PL), Xray diffraction, and decay measurements, respectively. Upon 406 nm excitation Sm 3+ doped NGP phosphors emit orange-red luminescence with peak maximum at 602 nm. Sm 3+ ions were located at the inversion symmetry sites of NGP lattice. The Commission International de I’Eclairage chromaticity coordinates were calculated from the photoluminescence spectra. The NGP: Sm 3+ phosphors can be used as a promising material for solid state lighting devices.

Photoluminescence Studies of Na2Gd(PO4)2:Sm3+Nano Phosphors for SSL Applications