US 12,082,428 B2
OLED with triplet emitter and excited state lifetime less than 200 ns
Michael Fusella, Lawrenceville, NJ (US); Nicholas J. Thompson, New Hope, PA (US); Julia J. Brown, Yardley, PA (US); and Michael Stuart Weaver, Princeton, NJ (US)
Assigned to Universal Display Corporation, Ewing, NJ (US)
Filed by Universal Display Corporation, Ewing, NJ (US)
Filed on Mar. 10, 2020, as Appl. No. 16/814,504.
Claims priority of provisional application 62/817,389, filed on Mar. 12, 2019.
Prior Publication US 2020/0295291 A1, Sep. 17, 2020
Int. Cl. H01L 51/50 (2006.01); C09K 11/06 (2006.01); H10K 50/11 (2023.01); H10K 85/30 (2023.01); H10K 101/10 (2023.01)
CPC H10K 50/11 (2023.02) [C09K 11/06 (2013.01); H10K 85/342 (2023.02); H10K 85/344 (2023.02); H10K 85/346 (2023.02); H10K 85/348 (2023.02); H10K 85/371 (2023.02); C09K 2211/185 (2013.01); C09K 2211/188 (2013.01); H10K 2101/10 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A device comprising:
a first electrode;
a second electrode;
an emissive stack comprising a phosphorescent emissive material disposed between the first electrode and the second electrode;
wherein a transient excited-state lifetime of the phosphorescent emissive material is not more than 200 ns.