Patent ID: 8860013

Claim:
An organic electroluminescence element, comprising: an anode; a cathode; and an organic layer provided, on a substrate, between the anode and the cathode, the organic layer including at least a light emitting layer, the light emitting layer including (i) a first light-emitting layer, provided on an anode side, that is made from a first host material which is a hole transportability host and (ii) a second light-emitting layer, provided on a cathode side, which is made from a second host material serving as an electron transportability host, an organic light emitting material is added to each of the first host material and the second host material, a highest occupied molecular orbital (HOMO) and a lowest occupied molecular orbital (LUMO) of the first host material, HOMO and LUMO of the second host material, and HOMO and LUMO of the organic light emitting material satisfying the following relational expressions (1) and (2): 0 eV<(|HOMO of organic light emitting material|−|HOMO of first host material|)≦0.5 eV; (1) and 0 eV<(|LUMO of second host material|−|LUMO of organic light emitting material|)≦0.5 eV (2).