| abstract |
The invention relates to compounds of the formula I (Ca,Sr,Ba)1-x-yMeySiN2:Eux (I) where Me=Mn2+, Mg2+, Be2+, Ni2+, Co2+ and/or Ru2+ x=0.005 to 0.20 and y < 1, and/or of the formula II (Ca,Sr,Ba)2-xSi1-zMazN2: Eux (II) where Ma = Hf4+, Th4+ and/or Zr4+ x=0.005 to 0.20 and z < 1, and to a process for the preparation of these compounds, and to the use as phosphors and conversion phosphors for conversion of the blue or near-UV emission from an LED. |