Organic electroluminescent materials and devices
US9067947B2 · kind B2 · utility
9Cited by
31References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2009 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Nov 24, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A new class of compounds containing aza-dibenzothiophene or aza-dibenzofuran are provided. The compounds may be used in organic light emitting devices giving improved stability, improved efficiency, long lifetime and low operational voltage. In particular, the compounds may be used as the host material of an emissive layer having a host and an emissive dopant, or as a material in an enhancement layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.