Organic electroluminescent device and manufacturing method thereof
US11158821B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 11, 2019 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Feb 14, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/361
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present application provides an organic electroluminescent device and a manufacturing method thereof. A host material of a light-emitting layer of the organic electroluminescent device is co-evaporated by a donor host material and a acceptor host material in a same evaporation source to form an exciplex, which solves the technical problems such as low luminous efficiency, short service life or complicated operation process of the organic electroluminescent device in the prior art. The organic electroluminescent device according to the present application includes an anode, a cathode and a light-emitting layer disposed between the anode and the cathode, a host material of the light-emitting layer is formed by premixing a donor host material and a acceptor host material, the donor host material and the acceptor host material are co-evaporated in a same evaporation source to form an exciplex, and the host material is doped with a guest material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.