Indolocarbazole compound for use in organic electroluminescent device and organic electroluminescent device
US8062769B2 · kind B2 · utility
23Cited by
1References
10Claims
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Key dates
| Filing date | Nov 8, 2007 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Jul 18, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided is an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, fully secured of driving stability, and simply constructed. The EL device has a light-emitting layer disposed between an anode and a cathode stacked one upon another on a substrate and the light-emitting layer comprises a phosphorescent dopant and an indolocarbazole derivative as a host material. Examples of the indolocarbazole compounds include a compound represented by the following formula (2) or (3), wherein X is N or CH, at least one of Xs is N, and Ar1 to Ar3 each is a substituted or unsubstituted aromatic group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.