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H01L 51/50 (2006.01); C09K 11/06 (2006.01); H10K 85/30 (2023.01); H10K 85/40 (2023.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 101/00 (2023.01); H10K 101/10 (2023.01); H10K 101/30 (2023.01);

U.S. Cl.

CPC ...

H10K 85/6572 (2023.02); C09K 11/06 (2013.01); H10K 85/322 (2023.02); H10K 85/342 (2023.02); H10K 85/40 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/654 (2023.02); H10K 85/6574 (2023.02); C09K 2211/1077 (2013.01); C09K 2211/185 (2013.01); H10K 50/11 (2023.02); H10K 2101/00 (2023.02); H10K 2101/10 (2023.02); H10K 2101/30 (2023.02); H10K 2101/90 (2023.02);

Abstract

An organic light-emitting device having improved efficiency and lifespan includes: a first electrode, a second electrode, and an organic layer between the first electrode and the second electrode, wherein the organic layer includes an emission layer, the emission layer includes a first compound, a second compound, a third compound, and a fourth compound, the first compound, the second compound, the third compound, and the fourth compound are different from each other, the third compound includes a metal element having an atomic number of 40 or more, the fourth compound includes boron (B), the third compound and the fourth compound each satisfy Conditions 1-1 and 1-2 below, and the fourth compound satisfies Condition 2 or 3:(3)(4) Condition 1-1(3)(4) Condition 1-2(4)≥10 Condition 2(4)≥0.1 Condition 3.

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