US 12,221,573 B2
Metal-assisted delayed fluorescent materials as co-host materials for fluorescent OLEDs
Jian Li, Tempe, AZ (US)
Assigned to Arizona Board of Regents on behalf of Arizona State University, Scottsdale, AZ (US)
Filed by Arizona Board of Regents on behalf of Arizona State University, Scottsdale, AZ (US)
Filed on Sep. 25, 2023, as Appl. No. 18/473,609.
Application 18/473,609 is a continuation of application No. 17/709,956, filed on Mar. 31, 2022, granted, now 11,795,387.
Application 17/709,956 is a continuation of application No. 16/921,301, filed on Jul. 6, 2020, granted, now 11,339,324.
Application 16/921,301 is a continuation of application No. 16/288,350, filed on Feb. 28, 2019, granted, now 10,745,615.
Application 16/288,350 is a continuation of application No. 15/925,203, filed on Mar. 19, 2018, granted, now 10,294,417.
Application 15/925,203 is a continuation of application No. 15/505,544, granted, now 9,920,242, previously published as PCT/US2015/046419, filed on Aug. 21, 2015.
Claims priority of provisional application 62/040,727, filed on Aug. 22, 2014.
Prior Publication US 2024/0026218 A1, Jan. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C09K 11/06 (2006.01); H10K 50/11 (2023.01); H10K 50/13 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01)
CPC C09K 11/06 (2013.01) [H10K 50/11 (2023.02); H10K 50/13 (2023.02); H10K 85/331 (2023.02); H10K 85/341 (2023.02); H10K 85/342 (2023.02); H10K 85/346 (2023.02); H10K 85/371 (2023.02); H10K 85/381 (2023.02); H10K 85/60 (2023.02); H10K 85/615 (2023.02); H10K 85/649 (2023.02); H10K 85/653 (2023.02); H10K 85/654 (2023.02); H10K 85/655 (2023.02); H10K 85/656 (2023.02); H10K 85/657 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); C09K 2211/185 (2013.01); C09K 2211/187 (2013.01); C09K 2211/188 (2013.01); H10K 85/622 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A light emitting device comprising:
a first electrode;
a hole transporting layer;
an emissive layer
an electron transporting layer; and
a second electrode;
wherein the emissive layer comprises 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.