In an organic EL device disclosed, there are stacked sequentially on a
glass substrate an anode, a first carrier transportation layer, a second
carrier transportation layer, a light emission layer, a third carrier
transportation layer, a fourth carrier transportation layer, an electron
transportation layer, and a cathode. The first carrier transportation
layer is formed from a material having an ionization potential Ip lower
than the ionization potential Ip of the second carrier transportation
layer, and the third carrier transportation layer is formed from a
material having an electron affinity Ea less than the electron affinity
Ea of the fourth carrier transportation layer.