Process for preparing red-emitting phosphors
US9546318B2 · kind B2 · utility
3Cited by
11References
13Claims
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Key dates
| Filing date | May 1, 2014 |
| Grant date | Jan 17, 2017 |
| Priority date | — |
| Expiry date | May 16, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for preparing a Mn4+ doped phosphor of formula IAx[MFy]:Mn+4 Iincludes contacting a mixture of a compound of formula Ax[MFy], a compound of formula AX, and a Mn+n source comprising a fluoromanganese compound, with a fluorine-containing oxidizing agent in gaseous form, at an elevated temperature, to form the Mn4+ doped phosphor;wherein
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