According to one aspect of the present invention, {TAIL ~ the phosphor} has a formula of {HEAD ~ PO4}; wherein 0<x, y<1; 0<x+y+z<1; and 0.3<z <1 
According to one aspect of the present invention , { TAIL ~ the phosphor } has a formula of { HEAD ~ PO4 } ; wherein 0 < x , y<1 ; 0 < x+y+z<1 ; and 0.3 < z < 1
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH