Electroluminescent device having a very thin emission layer
US6831406B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2000 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | May 24, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/631
Abstract
An organic electroluminescent device comprises a pair of electrodes, and a layer structure provided between the pair of electrodes and including a charge transport layer capable of transporting electrons or holes and an emission layer comprising a major proportion of an organic material capable of emitting light on application of a voltage thereto via the pair of electrodes. The organic material undergoes concentration quenching and the emission layer has a thickness of 4 nm or below. The emission layer may be made of an electroluminescent organic material, which has a fluorescent lifetime shorter than an organic material present in the charge transport layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.