ORGANIC LIGHT-EMITTING ELEMENT

摘要

The present specification relates to an organic light-emitting element, which comprises: a cathode; an anode formed opposite to the cathode; a light-emitting layer formed between the cathode and the anode; and an electron transport layer formed between the cathode and the light-emitting layer; and an electron adjustment layer formed between the light-emitting layer and the electron transport layer, wherein the electron transport layer includes an organic compound containing an aromatic hetero ring, the electron adjustment layer includes a hetero ring compound represented by chemical formula 1, and the ionization potential (Ipm) of the electron transport layer is larger than the ionization potential (Ipa) of the electron adjustment layer.