Photoluminescence properties of X5SiO4Cl 6:Tb3+ (X = Sr, Ba) green phosphor prepared via modified solid state method

Abstract

Luminescence property of a new halo silicate phosphor, X 5SiO4Cl6:Tb3+ (X = Sr, Ba) prepared by modified solid state method is reported here. It is characterized by powder X-ray diffraction and studied by photoluminescence excitation and emission spectra. In the emission spectra of X5SiO4Cl 6:Tb3+ (X = Sr, Ba) phosphor, characteristic blue and green emission peaks are present corresponding to Tb3+ intra 4f transition. Emission spectrum shows a dominant peak at 544 nm due to the 5D4 → 7F5 transition of Tb 3+. © Indian Academy of Sciences.