Patent ID: 8075802

Claim:
A luminescent material for an LED, comprising: a compound including a host lattice, wherein the host lattice comprises first group ions and oxygen, wherein the first group includes at least one of Be, Mg, Ca, Sr, Ba, Zn, Cd, and Mn, wherein a first portion of the first group ions is substituted by divalent copper ions, wherein a second portion of the first group ions is substituted by lead ions, and wherein the compound has the formula a (M′O) .b (M″ 2 O) .c (M″X) .d (Sb 2 O 5 ) .e (M′″O) .f (M″″ x O y ), wherein: M′ is a combination of Cu and Pb; M″ is Li, Na, K, Rb, Cs, Au, Ag, or any combination thereof; M″′ is Be, Mg, Ca, Sr, Ba, Zn, Cd, Mn, or any combination thereof; M″″ is Bi, Sn, Sc, Y, La, Pr, Sm, Eu, Tb, Dy, Gd, or any combination thereof; X is F, CI, Br, I, or any combination thereof; 0<a≦2; 0≦b≦2; 0≦c≦4; 0<d≦8; 0<e≦8; 0<f≦2; 1≦x≦2; and 1≦y≦5.