【摘 要】
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The Ba1-xSrxMgSiO4:Eu2+,Mn2+ phosphors were prepared by solid-state reaction.Their photoluminescence properties were investigated with fluorescence spectrum and
【机 构】
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Department of Chemistry,Institute of Nano-Chemistry
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The Ba1-xSrxMgSiO4:Eu2+,Mn2+ phosphors were prepared by solid-state reaction.Their photoluminescence properties were investigated with fluorescence spectrum and CIE chromaticity.The emission color of Euv in Ba0.98-xSrxMgSiO4:0.02Eu2+ could be tuned from green to blue by adjusting the content of Sr2+.The blue emission of Eu2+ overlapped well with the excitation spectra of Mn2+,leading to an efficient energy transfer from Eu2+ to Mn2+ in Ba0.98-xSrxMg1 ySiO4:0.02Eu2+yMn2+.Ba0.93Sr0.03Mg1 ySiO4:0.02Eu2+,yMn2+ could emit three efficient broad bands at 440,530 and 640 nm.The emission color of Ba0.93Sr0.03Mg1-ySiO4:0.02Eu2+,yMn2+ could be tuned from greenish blue to yellowish white by increasing the content of Mn2+ from 0 to 0.1.By changing the content of Sr2+/Mn2+,white-light with different hues could be conveniently obtained in the Ba1-xSrxMgSiO4:Eu2+,Mn2+phosphors.The results showed that Ba1-xSrxMgSiO4:Eu2+,Mn2+ is a promising single-phased tricolor phosphor in the fabrication of W-LED.
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