WHITE LIGHT LUMINOPHORE BASED ON BIVANADATE OF CAESIUM ZINC Russian patent published in 2014 - IPC C09K11/55 C09K11/82 

FIELD: chemistry.

SUBSTANCE: luminophore based on bivadanate of caesium zinc CsZnVO₄ additionally contains oxides of cerium and samarium and has the composition, wt %: CsZnVO₄ 99.94-99.98; Sm₂O₃ 0.03-0.01; CeO₂ 0.03-0.01. First stoichiometric quantities of Cs₂CO₃ and V₂O₅ are mixed. The mixture is thoroughly mixed in ethanol, alloyed at 680°C for 1 h. The obtained cake CsVO₃ is milled in the ball mill. ZnO, CeO₂ and Sm₂O₃ are added to the milled product, thoroughly mixed in ethanol and alloyed at 880°C for 3 h.

EFFECT: obtained luminophore has white light, close to the spectrum of sunlight, is not hygroscopic, is heat resistant, and does not contain expensive europium oxide.

1 dwg, 3 ex