CPC H10K 50/11 (2023.02) [C09K 11/025 (2013.01); C09K 11/06 (2013.01); H05B 33/14 (2013.01); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/17 (2023.02); H10K 50/171 (2023.02); H10K 50/818 (2023.02); H10K 50/828 (2023.02); H10K 85/6572 (2023.02); H10K 85/6576 (2023.02); C09K 2211/1007 (2013.01); C09K 2211/1044 (2013.01); C09K 2211/185 (2013.01); H10K 85/342 (2023.02); H10K 85/615 (2023.02); H10K 85/624 (2023.02); H10K 85/626 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 2101/00 (2023.02); H10K 2101/10 (2023.02)] | 20 Claims |
1. A light-emitting element comprising:
an anode,
a cathode; and
a light-emitting layer comprising a guest material and a host material between the anode and the cathode,
wherein the guest material is an iridium complex,
wherein the host material comprises a heterocyclic compound having a pyrazine,
wherein an emission spectrum of the host material overlaps with a longest-wavelength-side absorption band in an absorption spectrum of the guest material.
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