Organic light-emitting device
US8911881B2 · kind B2 · utility
22Cited by
1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2005 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | Dec 4, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An organic light-emitting device is provided. The organic light-emitting device comprises a first electrode, a second electrode, and a light-emitting layer interposed between the first electrode and the second electrode. The device further comprises of a phosphorescent dopant and a phosphorescent host that includes at least two hole transport materials. The mixed phosphorescent host materials increase energy transfer efficiency, thereby improving the efficiency and lifespan of the resulting organic light-emitting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.