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    PHOSPHOR COMPOSITIONS AND METHODS OF MAKING THE SAME
    4.
    发明公开
    PHOSPHOR COMPOSITIONS AND METHODS OF MAKING THE SAME 有权
    PHOSPHORZUSAMMENSETZUNGEN UND HERSTELLUNGSVERFAHRENDAFÜR

    公开(公告)号：EP2744870A1

    公开(公告)日：2014-06-25

    申请号：EP12753289.3

    申请日：2012-08-14

    申请人： Nitto Denko Corporation

    发明人： MIYAGAWA, Hiroaki ,  ZHANG, Bin ,  SHIH, James Chienchung

    IPC分类号： C09K11/77 ,  H05B33/14

    CPC分类号： C09K11/7774 ,  C09K11/7721 ,  F21V9/30 ,  G21K5/00 ,  H01L33/502 ,  H05B33/14

    摘要： Disclosed herein are emissive ceramic elements having low amounts of certain trace elements. Applicants have surprisingly found that a lower internal quantum efficiency (IQE) may be attributed to specific trace elements that, even at very low amounts (e.g., 50 ppm or less), can cause significant deleterious effects on IQE. In some embodiments, the emissive ceramic element includes a garnet host material and an amount of Ce dopant. The emissive ceramic element may, in some embodiments, have an amount of Na in the composition less than about 67 ppm, an amount of Mg in the composition less than about 23 ppm, or an amount of Fe in the composition less than about 21 ppm.

    摘要翻译： 本文公开了具有少量某些微量元素的发光陶瓷元件。 申请人惊奇地发现，较低的内部量子效率（IQE）可归因于特定的微量元素，甚至在非常低的量（例如，50ppm或更少）下也可能对IQE产生显着的有害影响。 在一些实施例中，发射陶瓷元件包括石榴石主体材料和一定量的Ce掺杂剂。 在一些实施方案中，发光陶瓷元件可以具有小于约67ppm的组成中的Na的量，组合物中的Mg的量小于约23ppm，或组合物中的Fe的量小于约21ppm 。