Eu2＋-doped oxyapatite SrxLalo-x （SiO4）6O3-x/2 phosphors are prepared by sofid-state reaction at high temper- atures under reducing atmosphere. Their crystal structures and photoluminescenee are investigated by x-ra...Eu2＋-doped oxyapatite SrxLalo-x （SiO4）6O3-x/2 phosphors are prepared by sofid-state reaction at high temper- atures under reducing atmosphere. Their crystal structures and photoluminescenee are investigated by x-ray diffraction （XRD） and fluorescence spectroscopy, respectively. The XlZtD results indicate that the samples are pure oxyapatite phase （P63/m space group）. The fluorescence spectra show two peaks corresponding to two sites （4f and 6h sites） for Eu2＋ in the host lattice. As the Eu2＋ content influences the intensity ratio of the two observed emission peaks, the photoluminescence mechanism is discussed.展开更多
文摘Eu2＋-doped oxyapatite SrxLalo-x （SiO4）6O3-x/2 phosphors are prepared by sofid-state reaction at high temper- atures under reducing atmosphere. Their crystal structures and photoluminescenee are investigated by x-ray diffraction （XRD） and fluorescence spectroscopy, respectively. The XlZtD results indicate that the samples are pure oxyapatite phase （P63/m space group）. The fluorescence spectra show two peaks corresponding to two sites （4f and 6h sites） for Eu2＋ in the host lattice. As the Eu2＋ content influences the intensity ratio of the two observed emission peaks, the photoluminescence mechanism is discussed.
