US 11,943,945 B2
Organic light-emitting diode containing co-hosts forming exciplex, and lighting device and display apparatus including same
Jang Joo Kim, Seoul (KR); Young Seo Park, Seoul (KR); Sung Hun Lee, Seoul (KR); and Kwon Hyeon Kim, Changwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Sep. 13, 2021, as Appl. No. 17/473,261.
Application 17/473,261 is a continuation of application No. 16/197,842, filed on Nov. 21, 2018, granted, now 11,152,583.
Application 16/197,842 is a continuation of application No. 14/391,610, granted, now 10,177,329, issued on Jan. 8, 2019, previously published as PCT/KR2013/002980, filed on Apr. 10, 2013.
Claims priority of application No. 10-2012-0037560 (KR), filed on Apr. 10, 2012.
Prior Publication US 2021/0408421 A1, Dec. 30, 2021
Int. Cl. H10K 50/12 (2023.01); H10K 50/11 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01); H10K 101/10 (2023.01); H10K 101/00 (2023.01); H10K 101/30 (2023.01); H10K 101/40 (2023.01)
CPC H10K 50/11 (2023.02) [H10K 50/12 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 85/322 (2023.02); H10K 85/342 (2023.02); H10K 85/622 (2023.02); H10K 85/631 (2023.02); H10K 2101/10 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02); H10K 2101/90 (2023.02)] 9 Claims
OG exemplary drawing
 
1. An organic light-emitting diode (OLED) comprising:
an anode;
a cathode; and
a light emitting layer which is disposed between the anode and the cathode,
wherein the light emitting layer comprises,
a hole-transporting host and an electron-transporting host which form an exciplex together; wherein the hole-transporting host and the electron-transporting host are mixed together in a single layer; and
a phosphorescent dopant having a triplet energy which is lower than the triplet energy of the hole-transporting host, the triplet energy of the electron-transporting host, and the triplet energy of the exciplex,
wherein λmax of photoluminescence of the exciplex is about 450 nm or less.