ILLUMINATION SYSTEM COMPRISING A GREEN-EMITTING CERAMIC LUMINESCENCE CONVERTER

摘要

An Illumination system comprising a radiation source and a monolithic ceramic luminescence converter comprising at least one phosphor capable of absorbing a part of the light emitted by the radiation source and emitting light of a wavelength different from that of the absorbed light, wherein said at least one phosphor is an europium(II)-activated oxonitridosilicate of the general formula (Sr1-a-b-c-d-e- fCabBacMgdZneCef)Six-gGegNyOz:Eua, wherein 0.001 < a < 0.2, 0.0 < b < 1.0, 0.0 < c < 0.5, 0.0 < d < 0.25, 0.0 < e < 0.25, 0.0 < f < 0.2, 0.0 < g < 1.0, 1.5 < x < 2.5, 1.5 < y < 2.5 and l.5 < z < 2.5.