Luminescent substance with europium-doped silicate luminophore, useful in LED, comprises alkaline-

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2 +- doped silicate phosphors with Eu The invention relates to inorganic luminophors, where solid solutions in the form of mixed phases between the leading to luminescence [...][...] -and 2 +- activation as lattice are used for the Eu. This luminophors be described by the general formula (1-x) 3 SiO2 5 5 · x SE M II SiO : Eu, wherein M II preferably for the alkaline earth metal ion of strontium or for another alkaline earth metal ion or other divalent metal ion, selected from the group of the elements magnesium, calcium, barium, copper, zinc and manganese, wherein these ions in defined quantities, usually also be used in mixtures in addition to the strontium and rare earths is and the symbol SE for initiator. The phosphors as Radiation converter for converting a higher-energy primary radiation are, for example, by UV radiation or blue light, and thus used in corresponding long-wavier visible radiation into a coloured luminous LED know preferably used as light emitting devices. The dispositions with the improved efficiency of the luminescence or conversion phosphors is are marked by a temperature-dependent. Quantum yield and by an extended life of the phosphors from, are responsible for the emission of the produced light. In particular, a high stability is of the luminophores...