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.
Claims20
-29. (canceled)
A light emitting device comprising sequently:
- a first electrode;
- a hole transporting layer;
- an emissive layer
- an electron transporting layer;
- and
- a second electrode;
- wherein the emissive layer comprises a donor, an acceptor, and a host;
- wherein the donor is a metal-assisted delayed fluorescent (MADF) emitter that demonstrates an emission spectrum consisting of dual emission characteristics from delayed fluorescence and phosphorescence;
- wherein the acceptor is a fluorescent emitter;
- wherein the donor harvests electrogenerated excitons and transfers energy to the acceptor.
An emissive layer comprising a donor, an acceptor, and a host;
- wherein the donor is a metal-assisted delayed fluorescent (MADF) emitter that demonstrates an emission spectrum consisting of dual emission characteristics from delayed fluorescence and phosphorescence;
Dependencies are inferred from the claim text.