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Ba_(1-x)Sr_xMgSiO_4:Eu^(2+),Mn^(2+): A novel tunable single-matrix tricolor phosphor for W-LED 被引量：3

Ba_(1-x)Sr_xMgSiO_4:Eu^(2+),Mn^(2+): A novel tunable single-matrix tricolor phosphor for W-LED
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摘要 The Ba1-xSrxMgSiO4：Eu2＋,Mn2＋ phosphors were prepared by solid-state reaction. Their photoluminescence properties were inves-tigated with fluorescence spectrum and CIE chromaticity. The emission color of Eu2＋ 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 ef-ficient energy transfer from Eu2＋ to Mn2＋ in Ba0.98-xSrxMg1-ySiO4：0.02Eu2＋,yMn2＋. Ba0.93Sr0.03Mg1-ySiO4：0.02Eu2＋,yMn2＋ could emit three ef-ficient 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. The Ba1-xSrxMgSiO4：Eu2＋,Mn2＋ phosphors were prepared by solid-state reaction. Their photoluminescence properties were inves-tigated with fluorescence spectrum and CIE chromaticity. The emission color of Eu2＋ 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 ef-ficient energy transfer from Eu2＋ to Mn2＋ in Ba0.98-xSrxMg1-ySiO4：0.02Eu2＋,yMn2＋. Ba0.93Sr0.03Mg1-ySiO4：0.02Eu2＋,yMn2＋ could emit three ef-ficient 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.
作者 杨创涛 谢丽娟 肖全兰 刘关喜 彭文芳 孟建新
机构地区 Department of Chemistry Institute of Nano-Chemistry
出处 《Journal of Rare Earths》 SCIE EI CAS CSCD 2012年第2期110-113,共4页 稀土学报（英文版）
基金 Project supported by the National Natural Science Foundation of China (30670523) the Fundamental Research Funds for the Central Universities
关键词 PHOSPHORS LUMINESCENCE energy transfer rare earths phosphors luminescence energy transfer rare earths
分类号 TN104.3 [电子电信—物理电子学]
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参考文献20

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Journal of Rare Earths
2012年 第2期

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