Organic light emitting device

An organic light emitting device comprising:

• an anode;
• a cathode provided to face the anode;
• a light emitting layer provided between the anode and the cathode;
• and
• an electron transporting layer provided between the cathode and the light emitting layer,
• wherein the electron transporting layer comprises a first electron transporting layer and a second electron transporting layer,
• the first electron transporting layer is provided to be brought into contact with the light emitting layer, and
• a reorganization energy of the first electron transporting layer is equal to or less than a difference in LUMO energies between the light emitting layer and the first electron transporting layer.