Journal Article organic field-effect transistors CH activation MXenes NIR imaging ambipolar polymers ambipolar transistors ambipolar transport artificial retina charge transport conjugated copolymers electrochemical doping electrochemical transistor electron mobility facilitation-to-depression transition ferroelectric ferroelectric memory ferroelectric random access memory (FeRAM) ferroelectrics flexible devices inkjet printing intercalants memory devices memory elements molecular additives neuromorphic devices noise tolerance organic circuits organic electret memory organic electronics