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首页> 外文期刊>Journal of nano research >Photoluminescence Properties of (Ba1-(x+ y)SrxEuy)(2)Si6O12N2 Phosphors for White LED Applications
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Photoluminescence Properties of (Ba1-(x+ y)SrxEuy)(2)Si6O12N2 Phosphors for White LED Applications

机译：用于白色LED应用的（Ba1-（x + y）SrxEuy）（2）Si6O12N2荧光粉的光致发光特性

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摘要

(Ba1-(x+y)SrxEuy)(2)Si6O12N2 oxynitride phosphors were successfully synthesized by the solid-state reaction method at 1200 degrees C under a H-2(5%) + N-2(95%) atmosphere. The Sr2+ content (x) was varied in the range 0-0.6 and the Eu2+ content varied in the range 0.05-0.25, with the Si/(Ba+Sr+Eu) ratio fixed at 3. Results showed that the emission characteristics of (Ba1-(x+y)SrxEuy)(2)Si6O12N2 phosphors under UV or blue-light excitation was strongly dependent on the chemical composition. The phosphor (Ba0.95Eu0.05) Si6O12N2 showed an intense green emission peak at 520 nm, whilst the phosphor (Ba0.45Sr0.5Eu0.05) Si6O12N2 had a weaker emission maximum at 548 nm. Ba2+ substitution with Sr2+ decreased the lattice volume of the (Ba1-(x+y)SrxEuy)(2)Si6O12N2 phosphors and was responsible for the red-shift in the emission peak. Optimization of the Eu2+ concentration at a fixed Sr2+ content of 0.2 identified the phosphor (Ba0.65Sr0.2Eu0.15)(2)Si6O12N2 as a potential alternative to YAG: Ce yellow phosphors for white LED applications.
机译：（Ba1-（x + y）SrxEuy）（2）Si6O12N2氮氧化磷光体是通过固态反应方法在1200摄氏度，H-2（5％）+ N-2（95％）气氛下成功合成的。 Sr2 +的含量（x）在0-0.6的范围内变化，Eu2 +的含量在0.05-0.25的范围内变化，Si /（Ba + Sr + Eu）的比值固定为3。结果表明（ Ba1-（x + y）SrxEuy）（2）Si6O12N2荧光粉在紫外或蓝光激发下强烈依赖于化学成分。荧光粉（Ba0.95Eu0.05）Si6O12N2在520 nm处显示强烈的绿色发射峰，而荧光粉（Ba0.45Sr0.5Eu0.05）Si6O12N2在548 nm处的发射最大值较弱。用Sr2 +取代Ba2 +降低了（Ba1-（x + y）SrxEuy）（2）Si6O12N2荧光粉的晶格体积，并导致了发射峰的红移。在固定的Sr2 +含量为0.2的条件下优化Eu2 +浓度可确定荧光粉（Ba0.65Sr0.2Eu0.15）（2）Si6O12N2可以替代YAG：用于白光LED的Ce黄色荧光粉。

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  • 来源
    《Journal of nano research》 |2016年第2016期|1-7|共7页
  • 作者

    Sarda Narendra G.; Fujigaki Hiroshi; Ogita Yuma; Chan Andrew; Murai Kei-ichiro; Waterhouse Geoffrey I. N.; Moriga Toshihiro;

  • 作者单位

    Univ Tokushima, Grad Sch Adv Technol, Dept Chem Sci & Technol, Tokushima 7708506, Japan;

    Univ Tokushima, Grad Sch Adv Technol, Dept Chem Sci & Technol, Tokushima 7708506, Japan;

    Univ Tokushima, Grad Sch Adv Technol, Dept Chem Sci & Technol, Tokushima 7708506, Japan;

    Univ Auckland, Sch Chem Sci, Private Bag 92019, Auckland 1, New Zealand;

    Univ Tokushima, Grad Sch Adv Technol, Dept Chem Sci & Technol, Tokushima 7708506, Japan|Univ Tokushima, Inst Sci & Technol, Div Adv Mat, Tokushima 7708506, Japan;

    Univ Auckland, Sch Chem Sci, Private Bag 92019, Auckland 1, New Zealand;

    Univ Tokushima, Grad Sch Adv Technol, Dept Chem Sci & Technol, Tokushima 7708506, Japan|Univ Tokushima, Inst Sci & Technol, Div Adv Mat, Tokushima 7708506, Japan;

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  • 正文语种 eng
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  • 关键词

    LEDs; Oxynitrides; Phosphors; Photoluminescence;

    机译：LED;氧氮化物;荧光体;光致发光;

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