Moisture-resistant phosphor compositions and associate methods
US10131835B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Dec 16, 2014 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Dec 25, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor composition is derived from combining K2SiF6:Mn4+ in solid form with a saturated solution of a manganese-free complex fluoride including a composition of formula I: A3[MF6], where A is selected from Na, K, Rb, and combinations thereof and M is selected from Al, Ga, In, Sc, Y, Gd, and combinations thereof. The composition of formula I: A3[MF6] has a water solubility lower than a water solubility of K2SiF6. A lighting apparatus including the phosphor composition is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.