ORGANIC LIGHT-EMITTING DEVICES

摘要

Disclosed is an organic light-emitting device which comprises: an organic layer including a first electrode, a second electrode facing the first electrode, and a light emitting layer intercalated between the first electrode and the second electrode; an electron transport region intercalated between the second electrode and the light emitting layer; and a mixed layer intercalated between the light emitting layer and the electron transport region and including a first material and a second material. The first material and the second material are pyrrolidine-based compounds, and at least one triplet energy (Eg_T1) in the first material and the second material is 2.2 eV or more.