| 摘要 |
<p>An organic EL element comprises: a transparent electrode; a reflective electrode opposite the transparent electrode; and a light-emitting layer having a film thickness of 20 nm to 200 nm, between the electrodes. The reflective electrode is a layered film of: a metal film including Al as a main component and having a film thickness of at least 43 nm; and a Ni film, whose film thickness d satisfies: 0 nm<d <5 nm, layered with respect to an entirety of a surface, facing the light-emitting layer, of the metal film, without interposition of an oxide layer that covers the surface of the metal film entirely. A surface of the layered film facing the light-emitting layer has an average roughness Ra satisfying: 0.6 nm≰Ra<2.0 nm and a maximum height difference Rmax satisfying: 5 nm≰Rmax<20 nm.</p> |
