Directed Growth of Dendritic Polymer Networks for Organic Electrochemical Transistors and Artificial Synapses

Organic electrochemical transistors (OECTs) are an emerging class of devices which operate in electrolytic solution and show controllable memory effects. For these reasons, OECT hold great potential for applications bioelectronics neuromorphic computing. Among the methods proposed to fabricate channels, electropolymerization stands out because it allows produce electrical connections on substrates on-demand further modify them adjust their properties meet circuit requirements. However, practical application this method is hampered by difficulty controlling growth direction as well morphology film, resulting a large device-to-device variability limiting down-scaling devices. In study, AC-electropolymerization directionally controlled channels. The physical such resistance capacitance varying polymerization parameters, voltage, frequency, salt concentration. mechanism, material morphology, network topology investigated, advantages approach showing tunable features possibility scale down channels micrometer demonstrated.