US 12,274,157 B2
Organic electroluminescent materials and devices
Eric A. Margulies, Ewing, NJ (US); Zhiqiang Ji, Hillsborough, NJ (US); Jui-Yi Tsai, Newtown, PA (US); Chun Lin, Yardley, PA (US); Alexey Borisovich Dyatkin, Ambler, PA (US); Mingjuan Su, Ewing, NJ (US); Bin Ma, Plainsboro, NJ (US); Michael S. Weaver, Princeton, NJ (US); Julia J. Brown, Yardley, PA (US); Lichang Zeng, Lawrenceville, NJ (US); Walter Yeager, Yardley, PA (US); Alan Deangelis, Pennington, NJ (US); and Chuanjun Xia, Lawrenceville, NJ (US)
Assigned to UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US)
Filed by Universal Display Corporation, Ewing, NJ (US)
Filed on Oct. 30, 2023, as Appl. No. 18/497,730.
Application 18/497,730 is a continuation of application No. 17/751,890, filed on May 24, 2022, granted, now 11,839,139.
Application 17/751,890 is a continuation of application No. 16/853,899, filed on Apr. 21, 2020, granted, now 11,424,419, issued on Aug. 23, 2022.
Application 16/853,899 is a continuation of application No. 15/619,217, filed on Jun. 9, 2017, granted, now 10,672,997, issued on Jun. 2, 2020.
Claims priority of provisional application 62/516,329, filed on Jun. 7, 2017.
Claims priority of provisional application 62/480,746, filed on Apr. 3, 2017.
Claims priority of provisional application 62/479,795, filed on Mar. 31, 2017.
Claims priority of provisional application 62/450,848, filed on Jan. 26, 2017.
Claims priority of provisional application 62/352,139, filed on Jun. 20, 2016.
Claims priority of provisional application 62/352,119, filed on Jun. 20, 2016.
Prior Publication US 2024/0107874 A1, Mar. 28, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C07F 13/00 (2006.01); C07F 15/00 (2006.01); C09K 11/06 (2006.01); H10K 85/30 (2023.01); H10K 50/11 (2023.01); H10K 50/81 (2023.01); H10K 50/82 (2023.01); H10K 101/10 (2023.01)
CPC H10K 85/342 (2023.02) [C07F 15/0033 (2013.01); C09K 11/06 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1022 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/1033 (2013.01); C09K 2211/1044 (2013.01); C09K 2211/1088 (2013.01); C09K 2211/1092 (2013.01); C09K 2211/185 (2013.01); H10K 50/11 (2023.02); H10K 50/81 (2023.02); H10K 50/82 (2023.02); H10K 2101/10 (2023.02)] 19 Claims
 
1. An organic light emitting device (OLED) comprising:
an anode;
a cathode; and
an emissive layer, disposed between the anode and the cathode, comprising a phosphorescent emitting compound;
wherein the phosphorescent emitting compound has an intrinsic emission spectrum with a FWHM value of no more than 45 nm;
wherein the OLED has an EQE of at least 25% measured at 0.1 mA/cm2 at room temperature when a voltage is applied across the device;
wherein the phosphorescent emitting compound is a metal coordination complex;
wherein the metal is selected from the group consisting of Ir, Rh, Re, Ru, Os, Pt, Pd, Au, Ag, and Cu;
wherein the phosphorescent emitting compound comprises a first benzene ring coordinated to the metal;
wherein the first benzene ring is fused by a second aromatic ring, which is fused by a third aromatic ring, which is fused by a fourth aromatic ring.