Patent attributes
There is provided an organic electroluminescence device that is high in light emitting efficiency and excellent in driving durability, which contains at least a light emitting layer between an anode and a cathode opposing each other, and further has either 1) an organic layer containing at least a first acceptor and a second acceptor between the light emitting layer and the anode, in which the first acceptor is a metal compound and the second acceptor is an organic compound which does not contain a metal, or 2) an organic layer containing a metal oxide as an acceptor between the light emitting layer and the anode, in which a concentration of the metal oxide in the organic layer is varied in a thickness direction and the concentration is lower in a portion near the light emitting layer than a portion near the anode.
