The present invention may provide an organic electroluminescent device that achieves low driving voltage and high luminous efficiency as well as long lifespan by including an exciton confinement layer (ECL), in which a predetermined physical property is adjusted, in an area of an electron transporting area, including at least two layers, that is adjacent to an emissive layer.
本发明可提供一种有机电致发光器件,该器件通过在电子传输区域(包括至少两层)中与发射层相邻的区域加入调整了预定物理特性的激子约束层(
ECL),实现了低驱动电压、高发光效率和长使用寿命。