CPC H10K 50/171 (2023.02) [H10K 50/818 (2023.02); H10K 50/828 (2023.02); H10K 59/35 (2023.02); H10K 71/00 (2023.02); H10K 2102/351 (2023.02)] | 13 Claims |
1. An organic electroluminescence element comprising:
an anode;
an organic light emitting layer disposed on an upper side of the anode;
a first functional layer disposed over the organic light emitting layer and including NaF;
a second functional layer disposed over the first functional layer and including an organic material containing Yb; and
a cathode disposed on an upper side of the second functional layer,
wherein the second functional layer includes a first layer section, a second layer section and a third layer section that are sequentially stacked in this order from a first functional layer side, and a relation of X2<X1<X3 is satisfied, where X1, X2 and X3 are Yb contents of the first layer section, the second layer section and the third layer section, respectively.
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