Light emitting device

A light emitting device includes a first electrode, a second electrode facing the first electrode, and an interlayer disposed between the first electrode and the second electrode and including a stack of emission layers. The stack of emission layers includes two or more emission layers, a quantum well layer, a hole transport host, and an electron transport host. The quantum well layer includes a hole transport compound, and an absolute value of highest occupied molecular orbital (HOMO) energy of the hole transport compound is greater than an absolute value of HOMO energy of the hole transport host. 本申请涉及发光装置，包括第一电极、面对所述第一电极的第二电极和设置在所述第一电极与所述第二电极之间并且包括发射层的堆叠体的中间层。所述发射层的堆叠体包括两个或多于两个的发射层、量子阱层、空穴传输主体和电子传输主体。所述量子阱层包含空穴传输化合物，以及所述空穴传输化合物的最高占据分子轨道(HOMO)能量的绝对值大于所述空穴传输主体的HOMO能量的绝对值。