US 12,225,760 B2
Organic electroluminescent devices
Michael Fusella, Lawrenceville, NJ (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 Mar. 8, 2024, as Appl. No. 18/599,472.
Application 18/599,472 is a continuation of application No. 18/083,809, filed on Dec. 19, 2022, granted, now 11,963,389.
Application 18/083,809 is a continuation of application No. 17/229,136, filed on Apr. 13, 2021, granted, now 11,569,480, issued on Jan. 31, 2023.
Application 17/229,136 is a continuation in part of application No. 16/814,858, filed on Mar. 10, 2020, granted, now 11,139,442, issued on Oct. 5, 2021.
Claims priority of provisional application 63/078,084, filed on Sep. 14, 2020.
Claims priority of provisional application 63/072,550, filed on Aug. 31, 2020.
Claims priority of provisional application 63/058,410, filed on Jul. 29, 2020.
Claims priority of provisional application 63/050,562, filed on Jul. 10, 2020.
Claims priority of provisional application 62/870,272, filed on Jul. 3, 2019.
Claims priority of provisional application 62/817,424, filed on Mar. 12, 2019.
Claims priority of provisional application 62/817,284, filed on Mar. 12, 2019.
Claims priority of provisional application 62/817,368, filed on Mar. 12, 2019.
Prior Publication US 2024/0215302 A1, Jun. 27, 2024
Int. Cl. H10K 50/00 (2023.01); H01L 33/44 (2010.01); H10K 50/11 (2023.01); H10K 50/85 (2023.01); H10K 101/10 (2023.01); H10K 101/30 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/85 (2023.02) [H01L 33/44 (2013.01); H10K 50/11 (2023.02); H10K 2101/10 (2023.02); H10K 2101/30 (2023.02); H10K 2102/3031 (2023.02); H10K 2102/331 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A device comprising:
a substrate;
a first electrode;
an organic emissive layer comprising an organic emissive material disposed over the first electrode; and
an enhancement layer, comprising a plasmonic material exhibiting surface plasmon resonance that non-radiatively couples to the organic emissive material and transfers excited state energy from the organic emissive material to the non-radiative mode of surface plasmon polaritons, disposed over the organic emissive layer,
wherein the enhancement layer is provided no more than a threshold distance away from the organic emissive layer,
wherein the organic emissive material has a total non-radiative decay rate constant and a total radiative decay rate constant due to the presence of the enhancement layer, and the threshold distance is where the total non-radiative decay rate constant is equal to the total radiative decay rate constant; and
wherein at least one of the organic emissive material and the organic emissive layer has a vertical dipole ratio (VDR) value equal or greater than 0.33 and wherein at least one of the substrate, the first electrode, organic emissive layer, or enhancement layer are corrugated.