CPC H10K 50/858 (2023.02) [H10K 50/13 (2023.02); H10K 50/814 (2023.02); H10K 50/824 (2023.02)] | 16 Claims |
1. An organic electroluminescent device, comprising: a first electrode, a second electrode, and a light-emitting layer between the first electrode and the second electrode; wherein
a functional electrode is disposed on a side of at least one of the first electrode and the second electrode away from the light-emitting layer;
the functional electrode comprises a first layer-stacked structure including a plurality of first light-transmitting layers and at least one second light-transmitting layer; wherein the first and second light-transmitting layers are stacked alternately; in the first layer-stacked structure, both the layer closest to the light-emitting layer and the layer farthest from the light-emitting layer are the first light-transmitting layers;
a refractive index of the first light-transmitting layer is greater than a refractive index of the second light-transmitting layer.
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