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Red line emitting phosphors for use in LED applications

  • US 20070205712A1
  • Filed: 02/13/2007
  • Published: 09/06/2007
  • Est. Priority Date: 02/02/2005
  • Status: Active Grant
First Claim
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1. A lighting apparatus for emitting white light comprising:

  • a semiconductor light source; and

    a phosphor material radiationally coupled to the light source, wherein said phosphor material comprises at least one phosphor selected from the group consisting of;

    (A) A2[MF5];

    Mn4+, where A is selected from Li, Na, K, Rb, Cs, NH4, and combinations thereof; and

    where M is selected from Al, Ga, In, or combinations thereof;

    (B) A3[MF6];

    Mn4+, where A is selected from Li, Na, K, Rb, Cs, NH4, and combinations thereof; and

    where M is selected from Al, Ga, In, or combinations thereof;

    (C) Zn2[MF7];

    Mn4+, where M is selected from Al, Ga, In, or combinations thereof; and

    (D) A[In2F7];

    Mn4+ where A is selected from Li, Na, K, Rb, Cs, NH4, or combinations thereof.

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