Organic electric field light emitting element and production therefor
US9365767B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2006 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Dec 18, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition for an organic electroluminescent device is a composition for forming an organic light emitting layer of an organic electroluminescent device by wet coating process. The composition contains a phosphorescent material, a charge transport material, and a solvent, in which the phosphorescent material and the charge transport material are each an unpolymerized organic compound, and the first oxidation potential of the phosphorescent material ED+, the first reduction potential of the phosphorescent material ED−, the first oxidation potential of the charge transporting material ET+, and the first reduction potential of the charge transporting material ET− satisfy the following condition: ET−+0.1≦ED−<ET+≦ED+−0.1 or ED−+0.1≦ET−<ED+≦ET+−0.1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.