A series of single Ce^(3+) doped and Ce^(3+) and Tb^(3+) co-doped Na_(2)BaCa(PO_(4))_(2)(NBCP) phosphors was synthesized by conventional solid-stated reaction method.The crystal structure,luminescence properties,therm...A series of single Ce^(3+) doped and Ce^(3+) and Tb^(3+) co-doped Na_(2)BaCa(PO_(4))_(2)(NBCP) phosphors was synthesized by conventional solid-stated reaction method.The crystal structure,luminescence properties,thermal stability and energy transfer were carefully investigated.Ce^(3+) is inferred to substitute the Ba^(2+)site in NBCP lattice.The color-tunable emission from blue to green is observed by adjusting Tb^(3+) concentration among NBCP:0.03 Ce^(3+),yTb^(3+) phosphors.The energy transfer behavior from Ce^(3+) to Tb^(3+) ions is both illustrated by co-doped PL spectra and decay curves.The energy transfer efficiency is as high as 91.5%.The mechanism of energy transfer is resonance type of dipole-dipole transition.In this work,the optimal phosphor exhibits the excellent thermal stability which keeps at 94.9% of that initial value at room temperature when temperature reaches to 150℃.The Ce^(3+) and Tb^(3+) co-doped NBCP phosphor is a promising candidate for the application in the general lighting and display fields.展开更多
基金Project supported by The National Natural Science Foundation of China(51772330,51472273)the Natural Science Foundation of Hunan Province(2017JJ2403)the Key Research Foundation of Education Bureau of Hunan Province(16A220)。
文摘A series of single Ce^(3+) doped and Ce^(3+) and Tb^(3+) co-doped Na_(2)BaCa(PO_(4))_(2)(NBCP) phosphors was synthesized by conventional solid-stated reaction method.The crystal structure,luminescence properties,thermal stability and energy transfer were carefully investigated.Ce^(3+) is inferred to substitute the Ba^(2+)site in NBCP lattice.The color-tunable emission from blue to green is observed by adjusting Tb^(3+) concentration among NBCP:0.03 Ce^(3+),yTb^(3+) phosphors.The energy transfer behavior from Ce^(3+) to Tb^(3+) ions is both illustrated by co-doped PL spectra and decay curves.The energy transfer efficiency is as high as 91.5%.The mechanism of energy transfer is resonance type of dipole-dipole transition.In this work,the optimal phosphor exhibits the excellent thermal stability which keeps at 94.9% of that initial value at room temperature when temperature reaches to 150℃.The Ce^(3+) and Tb^(3+) co-doped NBCP phosphor is a promising candidate for the application in the general lighting and display fields.
