Blue emitter with high efficiency based on imidazo[1,2-f] phenanthridine iridium complexes
US8815415B2 · kind B2 · utility
9Cited by
21References
16Claims
0Family size
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Key dates
| Filing date | Dec 7, 2009 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Jul 7, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Imidazo[1,2-f]phenanthridine compounds are provided. The compounds have a twisted aryl moiety further substituted by alkyl having four or more atoms. The compounds may be used in organic light emitting devices, particularly as emissive dopants, providing devices with improved efficiency, stability, and manufacturing. In particular, the compounds provided herein may be used in blue devices having high efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.