LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, DISPLAY, AND ELECTRONIC EQUIPMENT

摘要

Provided is a light-emitting element including a cathode; an anode; a first light-emitting layer that is disposed between the cathode and the anode and emits in a first color; a second light-emitting layer that is disposed between the first light-emitting layer and the cathode and emits in a second color that is different from the first color; and an intermediate layer that is disposed between the first light-emitting layer and the second light-emitting layer so as to be in contact with these layers and has a function of controlling the migration of holes and electrons between the first light-emitting layer and the second light-emitting layer. The intermediate layer is constituted of a first layer that is in contact with the first light-emitting layer and is constituted of a hole-transporting material serving as a main material and a second layer that is in contact with the first layer and also with the second light-emitting layer and is constituted of a material mixture, serving as a main material, of a material having an acene skeleton and a hole-transporting material.