Deep-red light-emitting magnesium fluoro-germanate fluoroescent body and method for producing same
US9605200B2 · kind B2 · utility
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Key dates
| Filing date | Mar 26, 2013 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Jul 17, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8512
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The deep red light-emitting magnesium fluorogermanate phosphor prepared by calcining a mixture comprising a fine magnesium oxide powder having a BET specific surface area in the range of 5-200 m2/g, a fluorine compound, a germanium compound and a manganese compound gives a light emission having a maximum peak of increased strength in the wavelength region of 640-680 nm upon excitation with a light having a wavelength of 400 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.