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Oxynitride phosphor and semiconductor light-emitting device

  • US 20060186377A1
  • Filed: 02/22/2006
  • Published: 08/24/2006
  • Est. Priority Date: 02/22/2005
  • Status: Active Grant
First Claim
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1. An oxynitride phosphor represented by a composition formula M1-aCeaSibAlcOdNe, wherein M denotes La or a compound of which main component is La and sub-component is at least one kind of element selected from the group consisting of Pr, Nd, Sm, Eu, Gd, Th, Dy, Ho, Er, Tm, Yb and Lu;

  • the a that represents a composition ratio of Ce is a real number satisfying 0.1≦

    a≦

    1;

    the b that represents a composition ratio of Si is a real number satisfying b=(6−

    z)×

    f;

    the c that represents a composition ratio of Al is a real number satisfying c=(1+z)×

    g;

    the d that represents a composition ratio of O is a real number satisfying d=z×

    h;

    the e that represents a composition ratio of N is a real number satisfying e=(10−

    z)×

    i;

    the z is a real number satisfying 0.1≦

    z≦

    3;

    the f is a real number satisfying 0.7≦

    f≦

    1.3;

    the g is a real number satisfying 0.7≦

    g≦

    3;

    the h is a real number satisfying 0.7≦

    h≦

    3;

    the i is a real number satisfying 0.7≦

    z≦

    1.3; and

    a JEM phase is contained in an amount of 50% or more.

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