摘要:
There is disclosed a structure for a stacked organic light emitting device in which a plurality of emissive units are disposed between the anode and the cathode. The emissive units comprise at least a hole-transport layer and an electron-transport layer. An intermediate layer is disposed between two adjacent emissive units and the intermediate layer comprises at least two sub-layers, a first sub-layer being formed of a material that can inject electrons into one emissive unit and a second sub-layer being formed of a material that can inject holes into the adjacent emissive unit. The sub-layers are formed of metals or inorganic materials only and a surface of the intermediate layer may be treated by a low pressure CF4-plasma.