US 12,096,683 B2
Organic electroluminescence device
Jungsub Lee, Hwaseong-si (KR); Hyunyoung Kim, Yongin-si (KR); Jiyoung Lee, Hwaseong-si (KR); Hyejin Jung, Hwaseong-si (KR); Minje Kim, Suwon-si (KR); Eung Do Kim, Seoul (KR); Hyojeong Kim, Hwaseong-si (KR); Hyosup Shin, Hwaseong-si (KR); Seokgyu Yoon, Hwaseong-si (KR); Youngki Lee, Asan-si (KR); Kunwook Cho, Seoul (KR); Hyeon Gu Cho, Yongin-si (KR); Minsoo Choi, Seoul (KR); Youngeun Choi, Jeonju-si (KR); Hyein Jeong, Suwon-si (KR); and Jaejin Lyu, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Sep. 28, 2020, as Appl. No. 17/035,552.
Claims priority of application No. 10-2019-0121814 (KR), filed on Oct. 1, 2019.
Prior Publication US 2021/0098716 A1, Apr. 1, 2021
Int. Cl. H01L 51/54 (2006.01); H10K 85/30 (2023.01); H10K 85/40 (2023.01); H10K 85/60 (2023.01)
CPC H10K 85/6572 (2023.02) [H10K 85/342 (2023.02); H10K 85/344 (2023.02); H10K 85/346 (2023.02); H10K 85/348 (2023.02); H10K 85/371 (2023.02); H10K 85/40 (2023.02); H10K 85/636 (2023.02)] 25 Claims
 
1. An organic electroluminescence device, comprising:
a first electrode;
a second electrode on the first electrode; and
an emission layer between the first electrode and the second electrode,
wherein the emission layer comprises host compounds and dopant compounds,
the host compounds comprise a first host compound represented by Formula 1, and a second host compound represented by Formula 2, and
the dopant compounds comprise an assistant dopant compound represented by Formula 3 and a light-emitting dopant compound represented by Formula 4:

OG Complex Work Unit Chemistry
wherein, in Formula 1,
R1 and R2 are each independently a substituted or unsubstituted aryl group of 6 to 30 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group of 3 to 30 carbon atoms for forming a ring,
L1 is a substituted or unsubstituted arylene group of 6 to 30 carbon atoms for forming a ring, or a substituted or unsubstituted heteroarylene group of 3 to 30 carbon atoms for forming a ring,
Ar1 is a substituted or unsubstituted aryl group of 6 to 30 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group of 3 to 30 carbon atoms for forming a ring, and
a and b are each independently an integer of 0 to 4,
in Formula 2,
Z1 to Z3 are each independently CR11 or N, and
a plurality of R11 and a plurality of R12 are each independently a hydrogen atom, a deuterium atom, a cyano group, a substituted silyl group, a substituted or unsubstituted aryl group of 6 to 30 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group of 3 to 30 carbon atoms for forming a ring,
in Formula 3,
A1 to A4 are each independently a substituted or unsubstituted aryl group of 6 to 30 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group of 1 to 30 carbon atoms for forming a ring,
X1 to X4 are each independently C or N,
R21 to R24 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted amine group, a substituted or unsubstituted alkyl group of 1 o 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group of 1 to 30 carbon atoms for forming a ring, and any of R21 to R24 are optionally combined with an adjacent group to form a ring,
d1 to d4 are each independently an integer of 0 to 4,
L21 to L23 are each independently a direct linkage,

OG Complex Work Unit Chemistry
a substituted or unsubstituted divalent alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted arylene group of 6 to 30 carbon atoms for forming a ring, or a substituted or unsubstituted heteroarylene group of 2 to 30 carbon atoms for forming a ring,
R25 to R27 are each independently a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group of 3 to 30 carbon atoms for forming a ring, and any of R25 to R27 are optionally combined with an adjacent group to form a ring,
d5 is an integer of 0 to 8,
M is platinum, palladium, copper, osmium, iridium, rubidium, or rhodium,
e1 to e3 are each independently 0 or 1, and
m is 1 or 2,
when M is platinum, palladium, copper or osmium, m is 1, and
when M is iridium, rubidium, or rhodium, m is 2 and e2 is 0, and
in Formula 4,
R31 to R41 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted silyl group, a substituted or unsubstituted amine group, a substituted or unsubstituted carbonyl group, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group of 2 to 20 carbon atoms, a substituted or unsubstituted alkynyl group of 2 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group of 3 to 30 carbon atoms for forming a ring.