System and method for producing light with organic light-emitting devices
US7361415B2 · kind B2 · utility
4Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2004 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Jun 3, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed are emissive materials of formula (I) or (II), comprising two bidentate NO-type ligands, or a tetradentate NOON-type ligand, and a transition metal. The emissive materials are useful as electrophosphorescent emitters in organic light-emitting devices. Also disclosed are methods for preparing organic light-emitting diodes comprising these emissive materials, and the use of such diodes as white and yellow organic light-emitting devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.