Illumination system comprising a radiation source and a fluorescent material

A phosphor capable of absorbing a part of light emitted by the radiation source and emitting visible light of wavelength different from that of the absorbed light;

• wherein said at least one phosphor is an oxido-nitrido-silicate of general formula
• EA2-zSi5-aBaN8-aOa:Lnz, wherein 0<z≦1 and 0<a<5
• comprising at least one element EA selected from the group consisting of Mg, Ca, Ba and Zn and at least one element B selected from the group consisting of Ga and In, and being activated with a lanthanide selected from the group consisting of cerium, europium, terbium and mixtures thereof.

A phosphor capable of absorbing a part of light emitted by the radiation source and emitting light of wavelength different from that of the absorbed light;

• wherein said at least one phosphor is of general formula
• Sr1.96Si3Al2N6O2:Eu0.04.

An illumination system comprising a radiation source and a fluorescent material comprising at least one phosphor capable of absorbing a part of light emitted by the radiation source and emitting visible light of wavelength different from that of the absorbed light;

• wherein said at least one phosphor is an oxido-nitrido-silicate of general formula
• EA2-zSi5-aBaN8-aOa:Lnz, wherein 0<z≦1 and 0<a<5
• comprising at least one element EA selected from a group of Mg and Zn and at least one element B selected from a group of Ga and In, and being activated by a lanthanide selected from a group of cerium, terbium, praseodymium and mixtures thereof.