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Metal-assisted delayed fluorescent materials as co-host materials for fluorescent OLEDs

  • US 9,920,242 B2
  • Filed: 08/21/2015
  • Issued: 03/20/2018
  • Est. Priority Date: 08/22/2014
  • Status: Active Grant
First Claim
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1. 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.

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