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H01L 51/50 (2006.01); C09K 11/02 (2006.01); C09K 11/06 (2006.01); H01L 27/32 (2006.01); H10K 50/11 (2023.01); H10K 50/12 (2023.01); H10K 59/121 (2023.01); H10K 59/12 (2023.01); H10K 59/38 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01); H10K 101/10 (2023.01); H10K 101/30 (2023.01); H10K 101/40 (2023.01);

U.S. Cl.

CPC ...

C09K 11/06 (2013.01); C09K 11/025 (2013.01); H10K 50/11 (2023.02); H10K 50/121 (2023.02); H10K 59/1213 (2023.02); C09K 2211/1007 (2013.01); C09K 2211/1044 (2013.01); C09K 2211/185 (2013.01); H10K 59/12 (2023.02); H10K 59/38 (2023.02); H10K 85/342 (2023.02); H10K 85/615 (2023.02); H10K 85/622 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6576 (2023.02); H10K 2101/10 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02);

Abstract

A light-emitting element having high luminous efficiency is provided. The light-emitting element includes a first organic compound, a second organic compound, and a third organic compound. The first organic compound and the second organic compound, in combination, are capable of forming an exciplex. The first organic compound is a phosphorescent compound and the third organic compound is a fluorescent compound. Light emitted from the light-emitting element includes light emitted from the third organic compound to which excitation energy is supplied from the exciplex formed by the first organic compound and the second organic compound.

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