Material for use in a light-emitting device and highly efficient electroluminescent device
US6844087B1 · kind B1 · utility
1Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2000 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Jul 11, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A material is provided that can be used for a light-emitting device. The base unit of said material is tris(8-quinolinolato)aluminum(III) (Alq3). This Alq3 is substituted in the said 3- or 4-position with an electron-donor group and simultaneously in the said 5-position with an electro-acceptor or p-delocalizing group. Using this material as an emitting luminescent layer, the efficiency of the intrinsic luminescence can be greatly enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.