An organic light-emitting device including a first electrode, a second electrode, an emission layer disposed between the first electrode and the second electrode, a hole transport region disposed between the first electrode and the emission layer, and an electron transport region disposed between the emission layer and the second electrode, wherein the emission layer includes a host and a dopant, wherein the dopant is an iridium-free organometallic compound, and wherein a dopant concentration profile of the emission layer satisfies predetermined parameters disclosed in the specification.
一种有机发光器件,包括第一电极、第二电极、设置在第一电极和第二电极之间的发射层、设置在第一电极和发射层之间的空穴传输区域,以及设置在发射层和第二电极之间的电子传输区域,其中发射层包括主体和掺杂剂,其中掺杂剂为无
铱有机
金属化合物,且发射层的掺杂剂浓度分布满足规定的参数。