	US 12,336,427 B2
	Organic electroluminescent materials and devices
Chun Lin, Yardley, PA (US); and Nicholas J. Thompson, New Hope, PA (US)
Assigned to UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US)
Filed by Universal Display Corporation, Ewing, NJ (US)
Filed on Jun. 28, 2021, as Appl. No. 17/360,227.
Claims priority of provisional application 63/049,901, filed on Jul. 9, 2020.
Prior Publication US 2022/0013731 A1, Jan. 13, 2022
Int. Cl. H10K 50/12 (2023.01); H10K 85/30 (2023.01); H10K 85/40 (2023.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 101/00 (2023.01); H10K 101/10 (2023.01); H10K 101/30 (2023.01)

CPC H10K 85/6572 (2023.02) [H10K 85/324 (2023.02); H10K 85/342 (2023.02); H10K 85/346 (2023.02); H10K 85/371 (2023.02); H10K 85/381 (2023.02); H10K 85/40 (2023.02); H10K 85/622 (2023.02); H10K 85/623 (2023.02); H10K 85/624 (2023.02); H10K 85/654 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 50/11 (2023.02); H10K 2101/10 (2023.02); H10K 2101/30 (2023.02); H10K 2101/90 (2023.02)]

20 Claims

1. An organic light emitting device (OLED) comprising, sequentially:

an anode;

a first emissive region; and

a cathode;

wherein the first emissive region comprises:

a first compound; and

a second compound;

wherein the first compound is a perovskite emitter that emits light from the OLED at room temperature;

wherein the second compound is capable of functioning as an emitter in an OLED at room temperature, wherein the second compound is selected from the group consisting of phosphorescent emitters, fluorescent emitters, and delayed fluorescent emitters, wherein the phosphorescent emitters are selected from metal coordination complexes where the metal M is Rh, Re, Ru, Os, Pt, Au, Ag, or Cu; and

wherein the first emissive region comprises a mixture of the first compound and the second compound.