Organic el device and process of producing the same
An organic EL device includes a light-emitting element having a first electrode disposed above a substrate, a second electrode arranged above the first electrode, and a light emission functional layer arranged between the first and second electrodes. The second electrode includes a mixture layer composed of a mixture of an electron-injecting material and a reducing material for reducing the electron-injecting material and a transparent electrically conductive layer formed on the mixture layer.
1. An organic EL device comprising:
a light-emitting element including a first electrode disposed above a substrate, a second electrode arranged above the first electrode, and a light emission functional layer arranged between the first and second electrodes, a light which is emitted from the light emission layer exiting from a second electrode side with respect to the light emission layer, wherein
the second electrode includes a mixture layer composed of a mixture of an electron-injecting material and a reducing material for reducing the electron-injecting material and a transparent electrically conductive layer formed on the mixture layer.
2. The organic EL device according to claim 1 ,
wherein the electron-injecting material is composed of a metal compound containing any of alkali metals, alkaline-earth metals, and rare-earth metals.
3. The organic EL device according to claim 2 , wherein
the metal compound contains any of Li, Ca, Sr, Ba, Nd, Sm, Yb, and Mg.
4. The organic EL device according to claim 1 , wherein
the electron-injecting material is lithium fluoride; and the reducing material is aluminum.
5. The organic EL device according to claim 1 , wherein
the mixture layer has a thickness of 5 nm or less.
6. The organic EL device according to claim 1 , wherein
the first electrode is made of a metal having light reflectivity; or the first electrode is made of a translucent material and is disposed on a light-reflecting layer that is arranged on the substrate.