| 摘要 |
Phosphor compositions having the formula (Y<SUB>1-x-y-z</SUB>Tb<SUB>x</SUB>Gd<SUB>y</SUB>Ce<SUB>z</SUB>)<SUB>3</SUB>(M<SUB>1</SUB>M<SUB>2</SUB>)<SUB>t</SUB>(Al<SUB>1-r-s</SUB>Ga<SUB>r</SUB>In<SUB>s</SUB>)<SUB>A-2t</SUB>O<SUB>12+D</SUB>, where M<SUB>1 </SUB>is Mg or Zn, M<SUB>2 </SUB>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. Also disclosed are light emitting devices including a light source and at least one phosphor having the above formula. Such phosphors exhibit a deeper red emission when compared to conventional TAG phosphors, allowing the production of white light sources having improved properties.
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