Composition, film, organic light emitting element, method for providing light emitting composition, and program
US12180399B2 · kind B2 · utility
0Cited by
0References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2021 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | Jun 18, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An organic light emitting element produced by using a light emitting composition that contains both a first compound having a PBHT value more than 0.730 and a second compound having ES1 lower than that of the first compound and ΔEST less than 0.20 eV is excellent in durability. ES1 is the lowest excited singlet energy level, ΔEST is the difference between the lowest excited singlet energy level and the lowest excited triplet energy level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.