Cyanonaphthalene diimide semiconductors for air-stable, flexible, and optically transparent n-channel field-effect transistors

Dicyanoperylene diimides (PDI-RCN₂) is an effective organic semiconductor used for the fabrication air-stable, flexible, and optically transparent n-channel field effect transistors (FET). These organic semiconductor materials feature a unique combination of high electron mobility, environmental stability, and solution processability. These materials yield complementary organic logic and frequency-generating devices with unprecedented performance. NDI-8CN and NDI-8CN₂ are two core-cyanated naphthalene diimide (NDI) semiconductors, which represent the first air-stable, high-mobility, and transparent organic n-type semiconductors. All thin films were characterized by OFET measurements, X-ray diffraction (XRD), and tapping-mode atomic force microscopy (AFM). This air-stable, flexible, transparent OFET, fabricated with NDI-8CN₂ to demonstrate the unique materials properties, exhibits a mobility of 0.03 cm².