Forming an improved stability emissive layer from a donor element in an OLED device
US6703180B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2003 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Apr 16, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/649
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of forming an organic light-emitting device with improved stability including forming an anode over a substrate, providing a cathode spaced from the anode, and providing a donor element including light-emitting material and positioning such donor element in a material-transferring relationship with the substrate. The method further includes illuminating the donor element with radiation to cause the transfer of light-emitting material to deposit the light-emitting material to form an emissive layer over the anode, and forming an organic layer including an organic compound doped with a low work function metal or metal compound capable of acting as a donor dopant between the emissive layer and the cathode to lower the electron-injecting barrier from the organic layer into the emissive layer thereby improving the stability of the organic light-emitting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.