RED-EMITTING PHOTOLUMINESCENT PHOSPHOR MATERIAL FOR PLASMA PANELS SCREENS Russian patent published in 2019 - IPC C09K11/78 C09K11/55 C09K11/63 C09K11/74 H01J29/18 

FIELD: chemistry.

SUBSTANCE: invention relates to inorganic chemistry and indicator equipment and can be used in making plasma panels excited by a constant and variable field. Red-radiating photoluminescent phosphor, which is a borate of composition Sr₃Bi₂(BO₃)₄:Eu³⁺, obtained by crystallisation from melt. Luminophore crystalline structure consists of isolated triangular radicals BO₃, and in crystallographically nonequivalent cationic positions M1, M2 and M3 there are Sr and Bi atoms. Position M1 is coordinated with eight oxygen atoms and is populated by approximately 80 % Sr and 20 % Bi. Position M2 is surrounded by eight oxygen atoms and is populated by approximately 60 % Sr and 40 % Bi. Polyhedron M3 is an eight-vertex and this position is populated by approximately 80 % Bi and 20 % Sr.

EFFECT: invention allows to increase optimal concentration of europium in luminophore and to use in its composition inexpensive and available components.

1 cl, 6 dwg, 1 tbl