Processes for preparing color stable manganese-doped phosphors
US9399732B2 · kind B2 · utility
2Cited by
20References
12Claims
0Family size
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Key dates
| Filing date | Aug 21, 2014 |
| Grant date | Jul 26, 2016 |
| Priority date | — |
| Expiry date | Jan 27, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
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 IAx[MFy]:Mn+4 (I)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.