| abstract |
The invention relates to a light emitting device, especially a LED with a ceramic composite material essentially of the composition M1-yA2-xBxO2-2XN2+X:Euy, where M is selected out of the group comprising Sr, Ca, Ba, Mg or mixtures thereof, A is selected out of the group comprising Si, Ge or mixtures thereof, B is selected out of the group comprising Al, B, Ga or mixtures thereof and x and y are independently selected from > 0 to ≤1. This material has been found to be a two-phase composition, one phase being an amber to red emitting phase, the other one being a cyan to green emitting phase. |