CHARGE FOR PRODUCTION OF SINGLE-COMPONENT ELECTRIC LUMINOPHOR OF VARYING LUMINESCENT COLOR ON BASE OF ZINC SULFIDE Russian patent published in 2008 - IPC C09K11/54 C09K11/56 C09K11/57 C09K11/58 

FIELD: manufacture of electroluminescent devices.

SUBSTANCE: proposed charge contains the following components, mass-%: copper monochloride CuCl, 0.05-0.15; manganese fluoride MnF₂·3H₂O, 0.2-0.45 or manganous nitrate Mn(NO₃)₂·6H₂O, 0.196-0.43; ammonium halogenide, 0.5-1.5; zinc chloride ZnCl₂·2H₂O, 0.25-1; or zinc bromide ZnBr₂, 0.28-1.2; oxalic acid, H₂C₂O₄·2H₂O or hydrazine sulfate (NH₂OH)₂·H₂SO₄, or hydroxylamine hydrosulfate NH₂OH·HCl, 1-3; sulfur, 2-4; the remainder being zinc sulfide ZnS. Charge may contain ammonium chloride NH₄Cl, ammonium bromide NH₄Br or ammonium iodide NH₄J used as ammonium halogenide. Charge components are thoroughly mixed, sieved and calcined in reducing atmosphere at temperature of 850-1050°C. Calcined luminophor is cooled, sorted out and subjected to chemical treatment, dried and sieved afterwards. Proposed charge increases luminosity by 2 times.

EFFECT: intensified luminosity; increased service life of articles; possibility of changing the color at constant level of brightness.

2 cl, 2 tbl, 4 ex