Color stable manganese-doped phosphors
US8252613B1 · kind B1 · utility
69Cited by
4References
14Claims
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Key dates
| Filing date | Mar 23, 2011 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Mar 23, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for preparing color stable Mn+4 doped phosphors includes providing a phosphor of formula I;Ax[MFy]:Mn+4 Iand contacting the phosphor in particulate form with a saturated solution of a composition of formula II in aqueous hydrofluoric acid;Ax[MFy]; II A lighting apparatus capable of emitting white light includes a semiconductor light source; and a phosphor composition radiationally coupled to the light source, and which includes a color stable Mn+4 doped phosphor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.