| abstract |
Embodiments of the present invention are directed a β-SiAlON:Eu 2+ based green emitting phosphor having the formula Eu x (A1) 6−z (A2) z O y N 8−z (A3) 2(x+z−y) , where 0<z≦4.2; 0≦y≦z; 0<x≦0.1; A1 is Si, C, Ge, and/or Sn; A2 is Al, B, Ga, and/or In; A3 is F, Cl, Br, and/or I. The new set of compounds described by Eu x (A1) 6−z (A2) z O y N 8−z (A3) 2(x+z−y ) have the same structure as β-Si 3 N 4 . Both elements A1 and A2 reside on Si sites, and both O and N occupy the nitrogen sites of the β-Si 3 N 4 crystal structure. A molar quantity (z−y) of the A3 − anion (defined as a halogen) reside on nitrogen sites. |