Luminophores and core-shell luminophore precursors
US9611424B2 · kind B2 · utility
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7References
26Claims
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Key dates
| Filing date | Oct 25, 2013 |
| Grant date | Apr 4, 2017 |
| Priority date | — |
| Expiry date | Oct 25, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/44
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A novel type of green luminophore containing mixed rare-earth phosphates is produced from precursor particles having a mean diameter ranging from 1.5 to 15 microns; such particles have an inorganic core and a shell of a mixed lanthanum and/or cerium phosphate, optionally doped with terbium, evenly covering the inorganic core with a thickness greater than or equal to 300 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.