Red-emitting phosphors, processes and devices
US10815423B2 · kind B2 · utility
1Cited by
5References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 2, 2016 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Jan 29, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2211/188
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for synthesizing a Mn4+ doped phosphor of formula I by electrolysis is presented. The process includes electrolyzing a reaction solution comprising a source of manganese, a source of M and a source of A. One aspect relates to a phosphor composition produced by the process. A lighting apparatus including the phosphor composition is also provided. Ax[MFy]:Mn4+ (I) where, 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 the absolute value of the charge of the [MFy] ion; and y is 5, 6 or 7.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.