Organic electroluminescent device

An organic electroluminescent device having an anode, a cathode, and a plurality of organic compound layers provided between the anode and the cathode and including a light-emitting layer,

• wherein the light-emitting layer contains two light-emitting materials including a phosphorescent light-emitting material, and a host material;
• three or more organic compound layers are provided between the light-emitting layer and the anode;
• three or more organic compound layers are provided between the light-emitting layer and the cathode, and
• when the ionization potential of the light-emitting layer is Ip1 and the ionization potentials of the three or more organic compound layers provided between the light-emitting layer and the anode are Ip2, Ip3, . . . , and Ipn in the order starting from the light-emitting layer, the formula (1):
• Ip1>Ip2>Ip3> . . . >Ipn (n is an integer of 4 or more) is satisfied, and
• when the electron affinity of the light-emitting layer is Ea1 and the electron affinities of the three or more organic compound layers provided between the light-emitting layer and the cathode are Ea2, Ea3, . . . , and Eam in the order starting from the light-emitting layer, the formula (2):
• Ea1<Ea2<Ea3 . . . <Eam (m is an integer of 4 or more) is satisfied.