ORGANIC ELECTROLUMINESCENT DEVICE

摘要

Disclosed is an organic electroluminescent device having a longer life. Specifically disclosed is an organic electroluminescent device comprising a pair of electrodes and an organic light-emitting layer sandwiched between the electrodes and containing a polymer light-emitting material. This organic electroluminescent device is characterized in that a first nanoparticle layer containing electron-transporting metal oxide nanoparticles and hole-transporting metal oxide nanoparticles is arranged between one of the electrodes and the organic light-emitting layer, and a second nanoparticle layer containing electron-transporting metal oxide nanoparticles and hole-transporting metal oxide nanoparticles is arranged between the other electrode and the organic light-emitting layer.