透过磷光掺杂物分布管理之延长的有机发光装置（ＯＬＥＤ）操作寿命;EXTENDED OLED OPERATIONAL LIFETIME THROUGH PHOSPHORESCENT DOPANT PROFILE MANAGEMENT

摘要

本发明至少部分系关于一种有机发光装置，其在一些实施例中包含阳极；阴极；安置于该阳极与该阴极之间的第一发射层，该第一发射层包含电子传输化合物及磷光发射掺杂物化合物；且其中该磷光发射掺杂物化合物在该发射层中具有自该第一发射层之阴极侧变化至该发射层之阳极侧的浓度梯度。; a cathode; a first emissive layer disposed between the anode and the cathode, the first emissive layer comprising an electron transporting compound and a phosphorescent emissive dopant compound; and wherein the phosphorescent emissive dopant compound has a concentration gradient, in the emissive layer, which varies from the cathode side of the first emissive layer to the anode side of the emissive layer.