Garnet phosphor materials having enhanced spectral characteristics

  • US 20050093431A1
  • Filed: 08/04/2004
  • Published: 05/05/2005
  • Est. Priority Date: 10/29/2003
  • Status: Active Grant
First Claim
Patent Images

1. A lighting apparatus for emitting white light comprising:

  • a light source emitting radiation at from about 250 nm to about 550 nm; and

    a phosphor composition radiationally coupled to the light source, the phosphor composition comprising (Y1−

    x−

    y−

    z
    TbxGdyCez)3(M1M2)t(Al1−

    r−

    s
    GarIns)A−

    2t
    O12+D, where M1 is Mg or Zn, M2 is Si or Ge, 0<

    x+y<

    1, 0.01<

    z<

    0.1, 0.1<

    t<

    1.5, 0<

    r, s<

    0.5, 4.5<

    A<

    5.0, and −

    1<

    D<

    1.

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