Synthesis and characterization of Eu3+ doped Ca9La(PO4)5(SiO4)FCl fluoroapatite phosphor for white LED

The fluoroapatite Ca9La(PO4)5(SiO4)FCl:1 mol% Eu3+ phosphor was synthesized by conventional solid state reaction. In the present work keeping concentration of F1Cl1 constant and (PO4)3− of the material was replace by (MoO4)3−. The phase purity and surface morphology was evaluated through X-ray diffraction and scanning electron microscope technique. The emission and excitation spectra were investigated using photoluminescence spectroscopy. The excitation and emission spectra indicate that prepared phosphor effectively excited by 278 nm, exhibits emission peak at 595 nm and 616 nm corresponds to yellow and red colour attributes to 5D0→7F1 and 5D0→7F2 transitions respectively. The above result reveals prepared phosphor is excellent red phosphor in white light emitting diode application.