	US 12,446,459 B2
	Organic electroluminescent device
Dong-Hyung Lee, Gyeonggi-do (KR); Chi-Sik Kim, Gyeonggi-do (KR); Soo-Yong Lee, Gyeonggi-do (KR); Seung-Hoon Yoo, Gyeonggi-do (KR); and Yoo-Jin Doh, Gyeonggi-do (KR)
Assigned to DuPont Specialty Materials Korea Ltd., (KR)
Filed by ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD., Chungcheongnam-do (KR)
Filed on Apr. 22, 2021, as Appl. No. 17/237,988.
Claims priority of application No. 10-2020-0049806 (KR), filed on Apr. 24, 2020; and application No. 10-2021-0022375 (KR), filed on Feb. 19, 2021.
Prior Publication US 2021/0351358 A1, Nov. 11, 2021
Int. Cl. H01L 51/50 (2006.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 50/15 (2023.01)

CPC H10K 85/636 (2023.02) [H10K 85/622 (2023.02); H10K 85/626 (2023.02); H10K 85/633 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 50/11 (2023.02); H10K 50/15 (2023.02)]

10 Claims

1. An organic electroluminescent device comprising a first electrode, a second electrode, and at least one organic layer interposed between the first electrode and the second electrode, wherein the organic layer comprises a light-emitting layer and a hole transport zone, and the hole transport zone comprises a deuterated compound; wherein the light-emitting layer comprises a dopant, the dopant comprises at least one selected from the group consisting of a boron derivative, a pyrene derivative, and a benzofluorene derivative.