US 12,484,373 B2
Organic light-emitting device and electronic apparatus including the same
Jong Soo Kim, Hanam-si (KR); Jang-joo Kim, Seoul (KR); Bomi Sim, Seoul (KR); Hosuk Kang, Suwon-si (KR); Eunsuk Kwon, Suwon-si (KR); Sunghan Kim, Seongnam-si (KR); Joonghyuk Kim, Seoul (KR); Sungho Nam, Daegu (KR); Hyejin Bae, Suwon-si (KR); and Sooghang Ihn, Hwaseong-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR); and SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Seoul (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR); and Seoul National University R&DB Foundation, Seoul (KR)
Filed on Apr. 18, 2023, as Appl. No. 18/302,105.
Application 18/302,105 is a continuation of application No. 16/944,416, filed on Jul. 31, 2020, abandoned.
Claims priority of application No. 10-2019-0093429 (KR), filed on Jul. 31, 2019; and application No. 10-2020-0095523 (KR), filed on Jul. 30, 2020.
Prior Publication US 2023/0276646 A1, Aug. 31, 2023
Int. Cl. H10K 50/155 (2023.01); H10K 50/11 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 50/18 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01); H10K 101/00 (2023.01); H10K 101/10 (2023.01)
CPC H10K 50/155 (2023.02) [H10K 85/342 (2023.02); H10K 85/636 (2023.02); H10K 85/6572 (2023.02); H10K 50/11 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/17 (2023.02); H10K 50/171 (2023.02); H10K 50/181 (2023.02); H10K 85/30 (2023.02); H10K 85/626 (2023.02); H10K 85/633 (2023.02); H10K 85/6574 (2023.02); H10K 2101/00 (2023.02); H10K 2101/10 (2023.02)] 16 Claims
OG exemplary drawing
 
1. An organic light-emitting device comprising:
a first electrode, a second electrode facing the first electrode, and an organic layer between the first electrode and the second electrode,
wherein the organic layer comprises an emission layer,
wherein the emission layer comprises a dopant and a host, the dopant and the host are different from each other, and an amount of the dopant is equal to or greater than about 20 parts by weight based on 100 parts by weight of the emission layer,
wherein the dopant is a phosphorescent dopant comprising a transition metal and at least one bidentate ligand, and at least one bidentate ligand among the at least one bidentate ligand comprises a carbene moiety bound to the transition metal via a coordinate bond, and
[Q(t=T50)]Polaron of the organic light-emitting device is greater than 0 cm−3 and equal to or less than about 3.30×1017 cm−3,
[Q(t=T50)]Polaron is a density of a quencher produced by a polaron in the organic light-emitting device during driving the organic light-emitting device at 500 nit at a time at which a luminance becomes 50% of an initial luminance, and
Q(t=T50)]Polaron is calculated i) by obtaining a curve of time versus driving voltage variation by measuring driving voltage variation of the organic light-emitting device over the time (t) at which a luminance becomes 50% of the initial luminance, ii) by fitting a rate equation of quencher production from the curve of the time versus driving voltage variation, and iii) from a 0th term for a density of excitons in the rate equation of the quencher production.