US 12,268,085 B2
Organic electroluminescence device
Yoonkyoo Lee, Seoul (KR); and Heechoon Ahn, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Aug. 24, 2021, as Appl. No. 17/445,804.
Claims priority of application No. 10-2020-0129664 (KR), filed on Oct. 7, 2020.
Prior Publication US 2022/0109121 A1, Apr. 7, 2022
Int. Cl. H01L 51/00 (2006.01); C07F 7/08 (2006.01); C07F 15/00 (2006.01); C07K 7/08 (2006.01); C09K 11/06 (2006.01); H10K 85/30 (2023.01); H10K 85/40 (2023.01); H10K 50/11 (2023.01); H10K 85/60 (2023.01); H10K 101/00 (2023.01); H10K 101/10 (2023.01)
CPC H10K 85/40 (2023.02) [C07F 7/0812 (2013.01); C07F 7/0814 (2013.01); C07F 15/0086 (2013.01); C09K 11/06 (2013.01); H10K 85/342 (2023.02); C07B 2200/05 (2013.01); C09K 2211/1018 (2013.01); C09K 2211/1044 (2013.01); C09K 2211/185 (2013.01); H10K 50/11 (2023.02); H10K 85/654 (2023.02); H10K 85/6576 (2023.02); H10K 2101/10 (2023.02); H10K 2101/90 (2023.02)] 13 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:
a first host compound represented by Formula 1;
a second host compound represented by Formula 2; and
a dopant compound comprising an organometallic complex containing Pt, Au, or Cu as a central metal element:

OG Complex Work Unit Chemistry
in Formula 1,
X1 is N or CR9,
R1 to R9 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted silyl group, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring-forming carbon atoms,
L1 is a substituted or unsubstituted arylene group of 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroarylene group of 2 to 30 ring-forming carbon atoms, or combined with an adjacent group to form a ring,
Ar1 is a substituted or unsubstituted silyl group, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring-forming carbon atoms, or combined with an adjacent group to form a ring, and
m is an integer of 1 or 2,
wherein at least one selected from among R1 to R8 and Ar1 is a substituted or unsubstituted silyl group, or an aryl group of 6 to 30 ring-forming carbon atoms, which is substituted with a substituted or unsubstituted silyl group:

OG Complex Work Unit Chemistry
in Formula 2,
Y1 to Y3 are each independently N or CR13,
wherein at least one selected from among Y1 to Y3 is N,
Ar2 to Ar4 are each independently a direct linkage, a substituted or unsubstituted arylene group of 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroarylene group of 2 to 30 ring-forming carbon atoms,
R10 to R12 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted silyl group, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring-forming carbon atoms, and
R13 is a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring-forming carbon atoms,
wherein at least one selected from among R10 to R12 comprises a substituted or unsubstituted silyl group.