| 发明名称 |
PROCESSES FOR PREPARING COLOR STABLE MANGANESE-DOPED PHOSPHORS |
| 摘要 |
Low-HF or HF-free processes for improving color stability of a Mn+4 doped phosphor of formula I include contacting the phosphor of formula I with a solution that contains hexafluorosilicic acid, and isolating a treated phosphor of formula I having improved color stability relative to an untreated phosphor of formula I;Ax[MFy]:Mn+4 (I)whereinA is Li, Na, K, Rb, Cs, R4 or a combination thereof;M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, 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; andy is 5, 6 or 7. |
| 申请公布号 |
US2015054400(A1) |
申请公布日期 |
2015.02.26 |
| 申请号 |
US201414465024 |
申请日期 |
2014.08.21 |
| 申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
Murphy James Edward |
| 分类号 |
C09K11/67;F21V9/16 |
主分类号 |
C09K11/67 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A process for improving color stability of a Mn+4 doped phosphor of formula I,
Ax[MFy]:Mn+4 (I) the process comprising contacting the phosphor of formula I with a solution comprising hexafluorosilicic acid; and isolating a treated phosphor having improved color stability relative to an untreated phosphor;
whereinA is Li, Na, K, Rb, Cs, R4 or a combination thereof;M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, 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; andy is 5, 6 or 7. |
| 地址 |
Schenectady NY US |
