Synthesis and characterization of novel Na sub(15)(SO sub(4)) sub(5 )F sub(4)Cl:Ce super(3+) halosulfate phosphors

A series of Na sub(15)(SO sub(4)) sub(5 )F sub(4)Cl phosphors doped with Ce super(3+) ions was prepared using the wet chemical method. X-Ray diffraction studies were used to determine their phase formation and purity. Fourier transform infrared spectroscopy effectively identified the chemical bonds present in the molecule. The photoluminescence properties of the as-prepared phosphors were investigated and the Ce super(3+) ions in these hosts were found to give broadband emission in the UV range. For the thermoluminescence study, phosphors were irradiated with a 5Gy dose of gamma -rays from a super(60)Co source. Chen's half-width method was employed to calculate the trapping parameters from the thermoluminescence glow curve.