| 摘要 |
An anode, a light-emitting layer, and a cathode, which has a structure formed by sequentially laminating from the light-emitting layer side a first cathode composed of a material having a work function of 3.0 eV or less and a second cathode composed of a material having a work function higher than that of the first cathode so that the total thickness of the first and the second cathodes is 100 angstroms or less, are stacked on a substrate 1, and light is emitted to the outside via at least the cathode.
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