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US 9,920,242 B2Granted
Metal-assisted delayed fluorescent materials as co-host materials for fluorescent OLEDs
AssigneeArizona Board of Regents on behalf of Arizona State University
InventorJian Li
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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 metal-assisted delayed fluorescent (MADF) emitter, a fluorescent emitter, and a host, and the MADF emitter harvests electrogenerated excitons and transfers energy to the fluorescent emitter.
Claims29
A light emitting device comprising:
- 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 comprising a metal-assisted delayed fluorescent (MADF) emitter, a fluorescent emitter, and a host, wherein the MADF emitter harvests electrogenerated excitons and transfers energy to the fluorescent emitter.
3 more elements
Dependencies are inferred from the claim text.