abstract |
Luminophors which luminesce in the blue region of the spectrum have the formula: M5(1- alpha )Eu5 alpha 2+SiO4X6 wherein M represents Ba1- beta Sr beta or Ba1- beta Ca62, with 0</= beta </=0.1 and 0</= alpha </=0.2, and X is Cl1- gamma Br gamma , with 0</= gamma </=1. |