Color stable red-emitting phosphors
US9982190B2 · kind B2 · utility
2Cited by
46References
8Claims
0Family size
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Key dates
| Filing date | Nov 24, 2015 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Feb 26, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for preparing a Mn+4 doped phosphor of formula IAx[MFy]:Mn+4 Iincludes gradually adding a first solution to a second solution gradually discharging the product liquor from the reactor while volume of the product liquor in the reactor remains constant; wherein The first solution includes a source of M and HF and the second solution includes a source of Mn to a reactor in the presence of a source of A.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.