| 摘要 |
The invention concerns an illumination system for generation of colored, especially amber or red light, 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 light of wavelength different from that of the absorbed light; wherein said at least one phosphor is a amber to red emitting a rare earth metal-activated oxonitridoalumosilicate of general formula (Ca<SUB>1-x-y-z</SUB>Sr<SUB>x</SUB>Ba<SUB>y</SUB>Mg<SUB>z</SUB>)<SUB>1-n</SUB>(Al<SUB>1-a+b</SUB>B<SUB>a</SUB>)Si<SUB>1-b</SUB>N<SUB>3-b</SUB>O<SUB>b</SUB>:RE<SUB>n</SUB>, wherein 0<=x<=1, 0<=y<=1, 0<=z<=1, 0<=a<=1, 0<b<=1 and 0.002<=n<=0.2 and RE is selected from europium(II) and cerium(III). |
