| abstract |
An organic EL element in which a short circuit between electrodes is prevented and light extraction efficiency is excellent. An organic electroluminescence comprising a lower electrode provided on a substrate, an organic layer provided on the lower electrode, and a light-transmissive upper electrode provided on the organic layer. in the element 1, the lower electrode 3 is composed of a reflective layer 3a made of a metal material and the buffer layer 3b of the upper buffer layer 3b is ITO, IZO, SnO 2, ZnO , CdO, TiO 2 and transparent similar thereto It is characterized by being made of a conductive material. When the buffer layer is made of ITO, the thickness is smaller than 30 nm and larger than 2 nm. Further, it is preferable that the reflection layer 3a is formed using silver or an alloy containing silver as a main component. [Selection diagram] Fig. 1 |