Patent ID: 8043723

Claim:
An organic EL device comprising: a pair of electrodes; and an organic layer sandwiched between the pair of electrodes, wherein the organic layer includes at least one compound including layer, and the compound including layer includes a compound of: the compound including layer is a light emitting layer, which is made of mixture of a hole transporting material, an electron transporting material and a light emitting additive, the compound is the hole transporting material, the hole transporting material has a glass transition temperature equal to or larger than 180° C., the compound has a decomposition threshold temperature, which is higher than a deposition rate threshold temperature of the compound, the hole transporting material in the light emitting layer has a first ionization potential, and the electron transporting material in the light emitting layer has a second ionization potential, and a difference between the first and second ionization potentials is equal to or larger than 0.35 eV, wherein the first ionization potential of the compound is 5.42 eV.