ELECTRON BUFFERING MATERIAL AND ORGANIC ELECTROLUMINESCENT DEVICE

摘要

The present invention relates to an organic electroluminescent device. The organic electroluminescent device comprises: a first electrode; a second electrode facing the first electrode; a light-emitting layer between the first electrode and the second electrode; and an electron transport band and an electron buffer layer between the light-emitting layer and the second electrode. The organic electroluminescent device comprising an electron buffer material, according to the present invention, has low driving voltage, excellent luminous efficiency, and long lifespan.