Patent ID: 8444880

Claim:
A yellow phosphor having oxyapatite structure and a chemical formula of (A 1−x Eu x ) 8−y B 2+y (PO 4 ) 6−y (SiO 4 ) y (O 1−z S z ) 2 , wherein A and Eu are divalent metal ions, B is a trivalent metal ion, 0<x≦0.6, 0≦y≦6, and 0≦z≦1, and wherein A is Mg, Sr, a rare earth metal, or Zn, and B is a group 13 metal, Bi, Sc, Y, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or Lu.