Fluoride-based phosphors for light emitting device
US11053438B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Sep 16, 2019 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Nov 5, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/181
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a red phosphor with a narrow full width at half maximum, having improved decay time and resolving afterglow phenomenon. The fluoride-based phosphor according to the invention is characterized in including a host having a composition of the following [Formula 1] including rubidium (Rb), cesium (Cs), silicon (Si) and fluorine (F) as constituent elements, and manganese (Mn) which is solid solution treated in the host as an activator: Rb3-xCsxSiF7 [Formula 1](where, 0<x<3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.