US 12,250,874 B2
Organic electroluminescence device and organometallic compound for organic electroluminescence device
Eunsoo Ahn, Jinju-si (KR); Soo-Byung Ko, Yongin-si (KR); Haejin Kim, Hwaseong-si (KR); Sujin Shin, Hwaseong-si (KR); Hyunjung Lee, Hwaseong-si (KR); and Junghoon Han, Seoul (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Sep. 9, 2021, as Appl. No. 17/447,249.
Claims priority of application No. 10-2020-0175439 (KR), filed on Dec. 15, 2020.
Prior Publication US 2022/0199918 A1, Jun. 23, 2022
Int. Cl. H10K 85/30 (2023.01); C07F 15/00 (2006.01); C09K 11/06 (2006.01); H10K 50/11 (2023.01); H10K 85/40 (2023.01); H10K 101/00 (2023.01); H10K 101/10 (2023.01)
CPC H10K 85/346 (2023.02) [C07F 15/0086 (2013.01); C09K 11/06 (2013.01); H10K 85/322 (2023.02); H10K 85/40 (2023.02); C09K 2211/1029 (2013.01); C09K 2211/1044 (2013.01); C09K 2211/185 (2013.01); H10K 50/11 (2023.02); H10K 2101/10 (2023.02); H10K 2101/90 (2023.02)] 20 Claims
OG exemplary drawing
 
1. An organic electroluminescence device comprising:
a first electrode;
a hole transport region on the first electrode;
an emission layer on the hole transport region;
an electron transport region on the emission layer; and
a second electrode on the electron transport region,
wherein the emission layer comprises an organometallic compound represented by Formula 1:

OG Complex Work Unit Chemistry
wherein, in Formula 1,
M is Pt, Pd, Ni, Au, Ag, Be, Mg, Al, Ca, Ti, Mn, Co, Zn, Ga, Zr, Ru, Rh, or Cu,
L1 is CR3R4, NR5, O, SiR6R7, BR8, or PR9,
X1 to X3 are each independently CR10 or N,
ring A1 to ring As are each independently a substituted or unsubstituted monocyclic or polycyclic hydrocarbon ring group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted monocyclic or polycyclic heterocyclic group having 2 to 30 ring-forming carbon atoms,
R1 to R10 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms,
n1 is an integer of 0 to 2,
n2 is an integer of 0 to 4, and
R is represented by Formula 2:

OG Complex Work Unit Chemistry
and
wherein, in Formula 2,
Ar1 and Ar3 are each independently a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms,
Ar2 is a substituted or unsubstituted trivalent aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted trivalent heteroaryl group having 2 to 30 ring-forming carbon atoms,
Ra to Rd are each independently a substituted or unsubstituted amine group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted thio group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or
Ra and Rb are bonded to each other to form a ring and/or Rc and Rd are bonded to each other to form a ring,
provided that, when Ar2 is a trivalent phenyl group not substituted with any additional substituents, then Ra to Rd are not all methyl groups at the same time, and “—*” is the bonding position with Formula 1.