Novel single-phase full-color emitting Ba9Lu2Si6O24: Ce3+/Mn2+/Tb3+ phosphors for white LED applications

被引：30
作者：
Khan, Sayed Ali [1 ]
Hao, Zhong [1 ]
Hu Wei-Wei [1 ]
Hao, Lu-Yuan [1 ]
Xu, Xin [1 ]
Khan, Noor Zamin [2 ]
Agathopoulos, Simeon [3 ]
机构：
[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Chinese Acad Sci, Key Lab Mat Energy Convers, Hefei 230026, Anhui, Peoples R China
[2] Univ Sci & Technol China, Key Lab Quantum Informat, Sch Phys Sci, Hefei 230026, Anhui, Peoples R China
[3] Univ Ioannina, Mat Sci & Engn Dept, GR-45110 Ioannina, Greece
来源：
JOURNAL OF MATERIALS SCIENCE | 2017年 / 52卷 / 18期
基金：
中国国家自然科学基金; 美国国家科学基金会;
关键词：
ENERGY-TRANSFER; LUMINESCENT PROPERTIES; LIGHT GENERATION; MN2+; CE3+; PHOTOLUMINESCENCE; DIODE; EXCITATION; EMISSION; DESIGN;
D O I：
10.1007/s10853-017-1162-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Novel single-phase full-color-emitting Ba9Lu2Si6O24: Ce3+/Mn2+/Tb3+ phosphors were successfully synthesized by a high-temperature solid-state reaction method. Analysis of the X-ray diffractograms of the produced phosphors suggests that all the luminescence doping cations preferably occupy the Ba2+ sites in the host lattice. Li+ were used according to Ce3+ and Tb3+ concentration as a charge compensation regent. Under UV excitation, the single Ce3+-doped phosphor exhibits an intense blue emission band that peaks at 424 nm. In the codoped phosphors, the experimental results suggest that an efficient energy transfer mechanism from Ce3+ to Tb3+ and Mn2+ results in the generation of a green emission in the Tb3+-doped phosphors and a red emission in the Mn2+ doped ones. The triple-doped phosphors, which contained specific concentrations of Ce3+, Mn2+, and Tb3+ ions, generated a tunable (in a wide range) white light which had good color rendering index values. Thermal behavior of the present phosphors was investigated which shows better characteristics. This result qualifies the produced powders as potential single-phase trichromatic white light-emitting phosphors.
引用
收藏
页码：10927 / 10937
页数：11
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