Highly efficient and stable oxynitride luminescent material, light source including the luminescent material, and method for producing the luminescent material

摘要

Phosphor from the class of the oxynitridosilicates, having a cation M which is doped with divalent europium, and having the empirical formula MSi2O2N2, where M=Sr1-x-yCayEux where 0.3=x+y=0.725, with a Ca/Eu ratio of 1, the oxynitridosilicate having an emission with a dominant wavelength in the range from 555 to 568 nm.