ORGANIC LIGHT-EMITTING DEVICE, DISPLAY APPARATUS, IMAGE INFORMATION-PROCESSING APPARATUS, AND IMAGE-FORMING APPARATUS

摘要

Provided is an organic light-emitting device having high efficiency and capable of being driven at a low voltage. An organic light-emitting device includes an anode, a cathode, and an organic compound layer including at least an emission layer between the anode and the cathode. The organic light-emitting device includes, between the anode and the emission layer, a first layer including a first organic semiconductor material and a transition metal oxide, and a second layer in contact with the first layer at an interface on a side closer to the anode and including a second organic semiconductor material. The refractive index of the first organic semiconductor material is less than 1.6. The ionization potential of the first organic semiconductor material is equal to or larger than the ionization potential of the second organic semiconductor material.

主权项

1. An organic light-emitting device, comprising:
an anode; a cathode; an emission layer between the anode and the cathode; a first layer comprising a first compound and a transition metal oxide; and a second layer comprising a second compound, the first layer and the second layer being formed between the anode and the emission layer, the second layer being in contact with the first layer at an interface on an anode side, wherein: the first compound comprises a compound having a π-conjugated structure and free of a transition metal oxide; the second compound comprises a compound free of a transition metal oxide; and a refractive index of the first compound is less than 1.6.