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Luminescent material for solid-state sources of white light

  • US 9,399,733 B2
  • Filed: 10/22/2010
  • Issued: 07/26/2016
  • Est. Priority Date: 10/22/2010
  • Status: Expired due to Fees
First Claim
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1. A luminescent material having the formula:


  • [(Y1-x-y-zCex(Ln-1)y(Ln-2)z]3-α

    (Al1-p-qGapInq)5O7.80-10.005,wherein α

    is a value in the range of 0.20≦

    α



    2.80wherein x is the atomic fraction of cerium in the range of 0.001<

    x<

    0.15;

    wherein (Ln-1)y is defined as one or more of Gd, Tb, La, Lu and Sm;

    wherein 0<

    y<

    0.90;

    wherein (Ln-2)z is defined as one or more of Pr, Nd, Eu, Dy, Ho, Tm, Er and Yb, which are dopants introduced into a cation sub-lattice in the range of 0.0001<

    z<

    0.01;

    wherein x, y and z are present such that 1-x-y-z>

    0;

    wherein p and q include atomic fractions of gallium and indium in an aluminium sub-lattice, wherein 0<

    p<

    0.3 and 0<

    q<

    0.3.

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