Color stable manganese-doped phosphors
US8710487B2 · kind B2 · utility
33Cited by
4References
10Claims
0Family size
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Key dates
| Filing date | Jul 30, 2012 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | Jul 30, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lighting apparatus capable of emitting white light includes a semiconductor light source; and a phosphor material radiationally coupled to the light source. The phosphor material includes a color-stable Mn+4 doped phosphor prepared by a process including 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
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