Light-emitting device and method for producing same
US10711091B2 · kind B2 · utility
1Cited by
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7Claims
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Key dates
| Filing date | Mar 21, 2017 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Mar 21, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a light-emitting device including an anode, a light-emitting layer, an electron-transporting layer and a cathode. The electron-transporting layer contains at least one electron-transporting material whose LUMO level is −3.0 eV or more and at least one dopant material selected from the group consisting of a heterocyclic compound whose SOMO level is −2.2 to −1.5 eV and a derivative thereof. The LUMO level of the electron-transporting material is smaller than the SOMO level of the heterocyclic compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.