| 摘要 |
A process for preparing a Mn4 * doped phosphor of formula I Ax [MFy]:Mn*4 includes contacting a mixture of a compound of formula Ax[MFy], a compound of formula AX, and a Mn*" source comprising a fluoromanganese compound, with a fluorine containing oxidizing agent in gaseous form, at an elevated temperature, to form the Mn 4 * doped phosphor; wherein A is Li, Na, K, Rb, Cs, 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; X is F, Cl, Br, I, HF2, or a combination thereof; x is the absolute value of the charge of the [MFy] ion; y is 5, 6 or 7; and n is 2, 3, or 4. - 14 Fig. 1 us Fig. 2 |
