Patent ID: 8093798

Claim:
A phosphor from the class of nitridosilicates from the M-Al—Si—N system, comprising a cation M, wherein M is represented by Ca alone or is represented by a mixture of Ca with at least one further element from the group Ba, Sr, Mg, Zn, Cd, Li, Na, Cu, wherein the phosphor is activated with at least one element from the group Eu, Ce which partly replaces M, wherein the phosphor forms a phase that is to be assigned to the system M3N2-AlN—Si3N4, wherein the atomic ratio of the constituents M:Al≧0.375 and the atomic ratio Si/Al≧1.4, wherein the phosphor has approximately the stoichiometry M 5−δ Al 4−2δ Si 8+2δ N 18 where |δ|≦0.5.