Process for preparing red-emitting phosphors
US9512356B2 · kind B2 · utility
15Cited by
12References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 2014 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | May 1, 2034 |
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 combining in an acidic solution, an A+ cation, an anion of formula MFy, and a Mnn+ source comprising a fluoromanganese compound, precipitating a Mnn+ containing phosphor precursor from the acidic solution, and contacting the Mnn+ containing phosphor precursor with a fluorine-containing oxidizing agent in gaseous form, at an elevated temperature, to form the Mn4+ doped phosphor;wherein
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.