Organic electroluminescent materials and devices
US9812656B2 · kind B2 · utility
5Cited by
31References
20Claims
0Family size
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Key dates
| Filing date | Jun 6, 2012 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Oct 30, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel heteroleptic iridium carbene complexes are provided. The complexes have lower-than expected sublimation temperatures, which is beneficial for the processing of these materials in solid state applications. Selective substitution of the ligands provides for phosphorescent compounds that are suitable for use in a variety of OLED devices. The carbene complexes can also be used as materials in a hole blocking layer and/or an electron transport layer to improve device performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.