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Phosphor and use thereof

  • US 8,703,019 B2
  • Filed: 05/22/2012
  • Issued: 04/22/2014
  • Est. Priority Date: 05/24/2005
  • Status: Active Grant
First Claim
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1. A phosphor comprising a crystal phase having a chemical composition expressed by the general formula [31]:


  • (EuyMII1−

    y
    MIIIMIVN3)1−

    x′

    (AMIV2N3)x′





    [31]wherein in the general formula [31], MII represents divalent metal elements including Mg, Ca, Sr, Ba, and Zn at a ratio of 90 mol % or more in total;

    MIII represents trivalent metal elements including Al at a ratio of 80 mol % or more;

    MIV represents tetravalent metal elements including Si at a ratio of 90 mol % or more;

    A represents one or more metal elements selected from Li, Na, and K;

    x′

    satisfies 0<

    x′

    <

    1.0;

    y satisfies 0<

    y 0.2.

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