Solution-Processed Small Molecule Donor/Acceptor Blends for Electrical Memory Devices with Fine-Tunable Storage Performance

To simplify the conventional donor acceptor molecular scaffold design, we report the synthesis of two simple donor (TCz) and acceptor (PI) semiconductors via brief synthetic routes. The film formed from solution process through the simple blending of TCz and PI revealed a compacted, continuous, and smooth morphology. The optical and electrochemical properties of the blend films with various blend proportions were characterized by UV-vis absorption spectra and cyclic voltammograms. The as-fabricated ITO/TCz:PI/Al sandwiched devices exhibited both volatility and reversibility dually tunable electrical data storage performance as the blend ratio varying. From these observations we demonstrate a very simple but powerful strategy to obtain organic memory devices with good performance.