LUMINISCENT SUBSTANCES, CONTAINING SILICATE LUMINOPHORES, DOPED WITH EU Russian patent published in 2015 - IPC C09K11/79 C09K11/78 F21S13/00 F21Y101/02 

FIELD: chemistry.

SUBSTANCE: inventions relate to chemical industry and light equipment and can be used in light diodes for emission of coloured or white light. Luminiscent substance with silicate luminophores, doped with Eu²⁺, contains solid solutions of mixed phases of oxyorthosilicates of alkali and are earth metals, represented, for instance, by formula: (1-x)M^II ₃SiO₅·x SE₂SiO₅:Eu, where 0<x≤0,2; M^II represents ions of bivalent metal, containing at least one ion selected from the group, consisting of strontium and barium, and SE - rare earth metals from the group, including Y, La, Gd. Luminophore can additionally contain ions of bivalent metal from the group, including Ca and Cu, as well as Ce³⁺ as additional activator.

EFFECT: increased service term of luminophores in light diodes due to increased resistance to atmospheric humidity.

11 cl, 2 dwg, 2 tbl, 4 ex