Organic electroluminescent device with low barrier height
US5343050A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1993 |
| Grant date | Aug 30, 1994 |
| Priority date | — |
| Expiry date | Jan 5, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/156
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is disclosed an organic electroluminescent device, comprising a multilayered structure of an organic film for electron injection, and an organic film for hole injection, at least one of which consists of a plurality of layers, and an organic film serving as a light-emitting layer interposed therebetween, a first electrode for electron injection formed on the side of the organic film for electron injection of the multilayered structure, and a second electrode for hole injection formed on the side of the organic film for hole injection of the multilayered structure, wherein a barrier height against electron injection at each interface between layers present from the first electrode to the organic film serving as the light-emitting layer is not more than 0.6 eV, and a barrier height against hole injection at each interface between layers present from the second electrode to the organic film serving as the light-emitting layer is not more than 0.6 eV.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.