| abstract |
Phosphorus from the class of nitridosilicates from the M-Al-Si-N system, with a cation M, where M is represented by Ca alone or by a mixture of Ca with at least one further element from the group Ba, Sr, Mg, Zn , Cd, Li, Na, Cu is represented, the phosphor being activated with at least one element from the group Eu, Ce, which partially replaces M, characterized in that the phosphor forms a phase which corresponds to the system M3N2-AlN-Si3N4 is to be assigned, the atomic ratio of the components M: A1> 0.375 and the atomic ratio Si / Al> 1.4, the phosphor having the stoichiometry M 5-δ Al 4-2δ + y Si 8 + 2δ-y N 18 -y O y with | δ | ≤ 0.5 and 0 ≤ y ≤ 2. |