US 11,925,115 B2
Organic light-emitting device comprising emission layer satisfying specific singlet excitation energy level conditions
Soonok Jeon, Suwon-si (KR); Inkoo Kim, Suwon-si (KR); Won-Joon Son, Yongin-si (KR); Yeonsook Chung, Seoul (KR); and Hyeonho Choi, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Oct. 27, 2022, as Appl. No. 18/050,138.
Application 18/050,138 is a continuation of application No. 16/903,913, filed on Jun. 17, 2020, granted, now 11,552,258.
Claims priority of application No. 10-2019-0107649 (KR), filed on Aug. 30, 2019.
Prior Publication US 2023/0309390 A1, Sep. 28, 2023
Int. Cl. H10K 85/60 (2023.01); C07D 403/10 (2006.01); C07D 403/14 (2006.01); C09K 11/06 (2006.01); H10K 50/11 (2023.01); H10K 50/19 (2023.01); H10K 50/12 (2023.01); H10K 101/10 (2023.01); H10K 101/30 (2023.01); H10K 101/00 (2023.01)
CPC H10K 85/6572 (2023.02) [C07D 403/10 (2013.01); C07D 403/14 (2013.01); C09K 11/06 (2013.01); H10K 85/654 (2023.02); C09K 2211/1018 (2013.01); H10K 50/11 (2023.02); H10K 50/121 (2023.02); H10K 50/19 (2023.02); H10K 2101/10 (2023.02); H10K 2101/30 (2023.02); H10K 2101/90 (2023.02)] 20 Claims
OG exemplary drawing
 
1. An organic light-emitting device comprising:
a first electrode;
a second electrode; and
an organic layer disposed between the first electrode and the second electrode and comprising an emission layer,
wherein the emission layer comprises a compound satisfying Conditions 5′ and 6 below:
0 eV<ΔEST≤0.1 eV  <Condition 5′>
ΔEST>0.2 eV  <Condition 6>
wherein, in Conditions 5′ and 6, ΔEST2 indicates the value obtained by subtracting a 2nd-lowest triplet excitation energy level calculated for a T2 equilibrium structure of the compound from a lowest singlet excitation energy level calculated for an S1 equilibrium structure of the compound and ΔEST indicates the value obtained by subtracting a lowest triplet excitation energy level calculated for a T1 equilibrium structure of the compound from a lowest singlet excitation energy level calculated for the S1 equilibrium structure of the compound.