Organic light-emitting diodes with fluorescent and phosphorescent emitters
US11329244B2 · kind B2 · utility
3Cited by
86References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 21, 2015 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Jun 17, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A light emitting device includes a first electrode, a hole transporting layer in contact with the first electrode, a second electrode, an electron transporting layer in contact with the second electrode; and an emissive layer between the hole transporting layer and the electron transporting layer. The emissive layer includes a phosphorescent emitter, a fluorescent emitter, and a host, and the phosphorescent emitter harvests electrogenerated excitons and transfers energy to the fluorescent emitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.