Photoluminescence properties of color-tunable KLaSiO4:Ce3+,Mn2+ phosphors
来源期刊：JOURNAL OF RARE EARTHS2015年第5期
论文作者：常文瑞 王丹 朋兴平 王育华 胡龄之 王静
文章页码：480 - 485
摘 要：A series of color-tunable KLa SiO4:Ce3+,Mn2+ phosphors were successfully prepared and the luminescent properties were investigated. Upon excitation at 290 nm, the emission spectra of KLa Si O4:Ce3+,Mn2+ phosphors included a blue emission band and a red emission band. Increasing the doping concentration of Mn2+ ions, the red emission was strengthened considerably, and the blue emission of Ce3+ was reduced, owing to the efficient energy transfer. The composition optimized KLa0.96SiO4:0.02Ce3+,0.02Mn2+ sample exhibited the white light emission brightly with the chromaticity coordinates of（0.331, 0.337）. Therefore, KLa Si O4:Ce3+, Mn2+ could be used as a white phosphor candidate for white light-emitting diodes devices.
常文瑞，王丹，朋兴平，王育华，胡龄之，王静
the Key Laboratory for Special Function Materials and Structure Design of the Ministry of Education, School of Physical Science and Technology,Lanzhou University
摘 要：A series of color-tunable KLa SiO4:Ce3+,Mn2+ phosphors were successfully prepared and the luminescent properties were investigated. Upon excitation at 290 nm, the emission spectra of KLa Si O4:Ce3+,Mn2+ phosphors included a blue emission band and a red emission band. Increasing the doping concentration of Mn2+ ions, the red emission was strengthened considerably, and the blue emission of Ce3+ was reduced, owing to the efficient energy transfer. The composition optimized KLa0.96SiO4:0.02Ce3+,0.02Mn2+ sample exhibited the white light emission brightly with the chromaticity coordinates of（0.331, 0.337）. Therefore, KLa Si O4:Ce3+, Mn2+ could be used as a white phosphor candidate for white light-emitting diodes devices.
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