申请人:Samsung Display Co., Ltd.
公开号:US11056651B2
公开(公告)日:2021-07-06
An organic light-emitting device having high efficiency and improved lifespan is provided. The organic light-emitting device of the present disclosure includes: a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode, the emission layer including a first compound; and an electron transport region between the emission layer and the second electrode, the electron transport region including an electron transport layer including a second compound and an electron control layer including a third compound, wherein the electron control layer is between the emission layer and the electron transport layer. The first compound may be represented by Formula 1, the second compound may be represented by Formula 2, and the third compound may be selected from compounds represented by Formula 1 and/or Formula 2:
本发明提供了一种具有高效率和更长使用寿命的有机发光器件。本公开的有机发光器件包括:第一电极;面向第一电极的第二电极;位于第一电极和第二电极之间的发射层,发射层包括第一化合物;以及位于发射层和第二电极之间的电子传输区域,电子传输区域包括包括第二化合物的电子传输层和包括第三化合物的电子控制层,其中电子控制层位于发射层和电子传输层之间。第一种化合物可以用式 1 表示,第二种化合物可以用式 2 表示,第三种化合物可以从式 1 和/或式 2 表示的化合物中选择: