摘要 |
A process for synthesizing a color stable Mn4+ doped phosphor includes contacting a precursor of formula I, in gaseous form at an elevated temperature with a fluorine-containing oxidizing agent to form the color stable Mn4+ doped phosphor Ax [MFy]:Mn4+ (I), wherein A is Li, Na, K, Rb, Cs, NR4 or a combination thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Hf, Y, La, Nb, Ta, Bi, Gd, or a combination thereof; R is H, lower alkyl, or a combination thereof; x is the absolute value of the charge of the [MFy] ion; and y is 5, 6 or 7. |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
MURPHY, JAMES, EDWARD;NAMMALWAR, PRASANTH, KUMAR;KARKADA, NAGAVENI;LYONS, ROBERT, JOSEPH;CHOWDHURY, ASHFAQUL, ISLAM;SETLUR, ANANT, ACHYUT;GARCIA, FLORENCIO;BEERS, WILLIAM, WINDER;DU, FANGMING |