An organic light-emitting device includes: a first electrode; a second electrode disposed opposite to the first electrode; an emission layer between the first electrode and the second electrode; and a hole transport region between the first electrode and the emission layer, wherein the emission layer includes an organometallic compound of Formula 1 as represented in the specification, and the hole transport region includes a first compound of Formula 2A or Formula 2B as represented in the specification.
一种有机发光器件包括:第一电极;与第一电极相对设置的第二电极;位于第一电极和第二电极之间的发射层;以及位于第一电极和发射层之间的空穴传输区域,其中发射层包括如说明书所示的式 1 的有机
金属化合物,空穴传输区域包括如说明书所示的式 2A 或式 2B 的第一种化合物。