Tunable Color of Eu2+/Mn2+ Coactivated Na5Ca2Al(PO4)4 via Energy Transfer

被引：7
作者：
Zhang Fen [1 ]
Tang Wanjun [1 ]
机构：
[1] South Cent Univ Nationalities, Coll Chem & Mat Sci, Hubei Key Lab Catalysis & Mat Sci, Wuhan 430074, Peoples R China
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2014年 / 97卷 / 10期
关键词：
LUMINESCENT PROPERTIES; PHOSPHOR; MN2+; TB3+; FIELD; EU2+;
D O I：
10.1111/jace.13122
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Eu2+ and Eu2+/Mn2+-activated Na5Ca2Al(PO4)(4) phosphors have been synthesized by the combustion method. X-ray powder diffraction profiles, luminescence spectra, chromaticity variation, and energy transfer of Na5Ca2Al(PO4)(4):Eu2+, Mn2+ were investigated as a function of the Eu2+ and Mn2+ concentrations in Na5Ca2Al(PO4)(4). The Na5Ca2Al(PO4)(4):Eu2+,Mn2+ phosphors can be effectively excited at wavelength ranging from 300 to 430nm, which matches well with that for near-ultraviolet (UV) light-emitting diode (LED) chips. Under excitation at 354nm, Na5Ca2Al(PO4)(4):Eu2+,Mn2+ not only exhibits blue-green emission band attributed to 4f(6)5d(1)4f(7) of Eu2+ but also gives an orange emission band attributed to (4)T(1)(6)A(1) of Mn2+. The emission color of the phosphor can be systematically tuned from blue-green through white and eventually to orange by adjusting the relative content of Eu2+ and Mn2+ through the principle of energy transfer. The results indicated that Na5Ca2Al(PO4)(4):Eu2+, Mn2+ may serve as a potential color-tunable phosphor for near UV white-light LED.
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页码：3252 / 3256
页数：5
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