| abstract |
An organic light-emitting device is provided, the organic light-emitting device comprising: a first electrode; a second electrode, opposite to the first electrode; an emission layer, between the first electrode and the second electrode; a hole transport region, in the first electrode between the electrode and the emission layer; and an electron transport region, between the emission layer and the second electrode, the electron transport region including an electron control layer, wherein the hole transport region includes a first compound selected from the group consisting of the first compound represented by Formula 1 and the At least one compound of the second compound represented by Formula 2, and the electron control layer includes a third compound represented by Formula 3: |