Patent ID: 8329061

Claim:
A photoluminescent phosphor comprising a matrix represented by the formula: (1−x−y−z)GO.xMX i .n[(1−k/2)Al 2 O 3 .kA].yEu 2+ O,zR 3+ O 1.5 wherein: G=Sr or Ca; M=Li, Na, Ca, Sr, Ba; or their combinations; X i =F, Cl, or F 2 , Cl 2 ; A=MgO or AlN; R=Dy alone or in combination with one or more of Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Ho, Er, Tm, Yb, and Lu or their combinations; x=0.00001 to 0.4; y=0.00001 to 0.10; z=0.00001 to 0.10; n=1 to 3; and k=0.00001 to 0.10;