The apatite compound Ca4La6（SiO4）4（PO4）2O2（CLSPO） was explored as the host material for phosphors used in white light-emitting diodes（w LEDs）. The crystal structure of the CLSPO host prepared by the solid-stat...The apatite compound Ca4La6（SiO4）4（PO4）2O2（CLSPO） was explored as the host material for phosphors used in white light-emitting diodes（w LEDs）. The crystal structure of the CLSPO host prepared by the solid-state reaction method was investigated with Rietveld refinement. The rare earth ions(Eu3+/Tb3+/Ce3+, Tb3+/Tb3+, Mn2+)activated CLSPO phosphors were synthesized, and their photoluminescence properties, quantum yields, as well as thermal stabilities, were studied. Under near-ultraviolet excitations, the Eu3+ and Tb3+ -doped CLSPO compounds exhibited red and green emissions with high luminescence efficiencies. Besides, tunable emissions from green to orange were obtained by introducing Mn2+ ions into the Tb3+ -doped CLSPO samples. The results showed that the phosphors studied may have potential applications for w LEDs.展开更多
基金the National Natural Science Foundation of China(Nos.11604115 and 11547023)the Educational Commission of Jiangsu Province of China(Nos.18KJB140002 and 17KJA460004)the Huaian Science and Technology Funds(No.HAC201701)
文摘The apatite compound Ca4La6（SiO4）4（PO4）2O2（CLSPO） was explored as the host material for phosphors used in white light-emitting diodes（w LEDs）. The crystal structure of the CLSPO host prepared by the solid-state reaction method was investigated with Rietveld refinement. The rare earth ions(Eu3+/Tb3+/Ce3+, Tb3+/Tb3+, Mn2+)activated CLSPO phosphors were synthesized, and their photoluminescence properties, quantum yields, as well as thermal stabilities, were studied. Under near-ultraviolet excitations, the Eu3+ and Tb3+ -doped CLSPO compounds exhibited red and green emissions with high luminescence efficiencies. Besides, tunable emissions from green to orange were obtained by introducing Mn2+ ions into the Tb3+ -doped CLSPO samples. The results showed that the phosphors studied may have potential applications for w LEDs.
