CPC H10K 50/11 (2023.02) [H10K 71/00 (2023.02); H10K 50/166 (2023.02); H10K 59/35 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02)] | 9 Claims |
1. An organic electroluminescence (EL) element comprising: an anode; a light-emitting layer; a functional layer; and a cathode stacked in this order, wherein
the light-emitting layer and the functional layer are in contact with each other,
hole mobility of the light-emitting layer is greater than electron mobility of the light-emitting layer,
the electron mobility of the light-emitting layer is greater than an effective electron mobility of the functional layer, and
a highest occupied molecular orbital (HOMO) level of a first functional material included in the light-emitting layer is at least 0.4 eV greater than a HOMO level of a second functional material included in the functional layer.
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