Condensed cyclic compound and organic light-emitting device including the same
US10873041B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2018 |
| Grant date | Dec 22, 2020 |
| Priority date | — |
| Expiry date | Jun 20, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A condensed cyclic compound that emits high-efficiency delayed fluorescence is provided. The compound may be represented by Formula 1, in which A is a moiety represented by Formula 1-1. In Formula 1-1, X1 may be a carbon or silicon atom linked to B1 and B2, and X2 may be a carbon or silicon atom linked to B3 and B4. When the compound represented by Formula 1 satisfies ES1<2ET1<ET2 (wherein ES1 is the first singlet energy level, ET1 is the first triplet energy level, and ET2 is the second triplet energy level of the condensed cyclic compound), an energy transition to a second triplet state may be disfavored during up-conversion of the condensed cyclic compound from a triplet state to a singlet state through interaction with an adjacent molecule in a triplet energy state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.