Voltage-tuning multi-layer full-color conjugated polymer LED

摘要

This invention relates to a device which is multilayer LEDs based on the commonly used high-efficiency electroluminescent conjugated polymers and can emitte the whole spectrum by varying voltage; wherein the structure of the device comprises a transparent electrode (TE) or a hole injection layer (HIL), several organic layers and an uppermost electron injection layer (EIL), characterized in choosing material of conjugated polymers with proper electron affinity (EA) and ionization potential (IP) for the organic layers.