Organic light-emitting device
US10153438B2 · kind B2 · utility
2Cited by
1References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2015 |
| Grant date | Dec 11, 2018 |
| Priority date | — |
| Expiry date | Apr 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An organic light-emitting device containing a compound having a lone electron pair and a π electron orbital, the compound emitting fluorescent light by such a mechanism that when at least a part of electrons constituting the lone electron pair is excited to an excited triplet state 3nπ* through nπ* transition, the part of electrons undergoes inverse intersystem crossing from the excited triplet state 3nπ* to an excited singlet state 1nπ*, and returns from the excited singlet state 1nπ* to the ground state, at which the fluorescent light is emitted. The organic light-emitting device has a high light emission efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.