摘要:
A method for manufacturing a phosphor material represented by the following general formula: yMgO2.(1 - x)Ga2O3.xMO2.pMnO where: MO2 an oxide selected from the group consisting of GeO2 and SiO2 0
摘要:
Inorganic phosphors are prepared by separately introducing the anions and cations to form the phosphor into a reaction solution; maintaining in the reaction solution, throughout the reaction, an excess of up to 1 molar of the anion or cation; preventing local excesses of anions and cations; and, growing crystals of the phosphor to at least 0.5 micron.
摘要:
AN IMPROVED LUMINESCENT COMPOSITION OF MANGANESE ACTIVATED CALLCIUM GALLATE, WHEREIN UP TO ABOUT 25 ATOM PERCENT OF THE GALLIUM CAN BE SUBSTITUTED FOR BY ALUMINUM. THE COMPOSITION IS PREPARED BY AN IMPROVED METHOD OF PREPARATION WHICH COMPRISES FIRING THE RAW MIX CONSTITUENTS WITH AT LEAST ONE OF THE FLUXES OF THE GROUP CONSISTING OF CADMIUM BROMIDE, CADMIUM CHLORIDE, SODIUM CHLORIDE, AMMONIUM CHLORIDE, AND ALUMINUM SULFATE. THE PREPARED COMPOSITION EXHIBITS IMPRIVED LUMINESCENT INTENSITY, AND MAINTENANCE OF LUMINESCENT INTENSITY.
摘要:
A PHOSPHOR IS PRODUCED BY HEATING TOGETHER TRIVALENT CERIUM OXIDE AND ALUMINUM OXIDE TO PRODUCE CEROUS ALUMINUM OXIDE HAVING THE B-ALUMINA CRYSTAL STRUCTURE. FOR THE PRODUCTION OF A CEROUS MANGANESE ALUMINUM OXIDE PHOSPHOR, DIVALENT MANGANESE OXIDE MAY BE INCLUDED IN THE INITIAL MIXTURE OR MAY BE HEATED IN ADMIXTURE WITH THE CEROUS ALUMINUM OXIDE. IN ALL CASES ANY ONE OR MORE OF THE OXIDES MAY BE REPLACED AT LEAST PARTIALLY BY A COMPOUND WHICH YIELDS THE OXIDE UNDER THE HEATING CONDITIONS.