Organic electrochemical transistors toward synaptic electronics

Abstract

Abstract Recently, the organic electronic devices have been developed rapidly. With the development of artificial intelligence, the research community has been able to design artificial synapses to simulate the function of biological synapses and realize information processing and calculation. The organic electrochemical transistor (OECT) is a novel artificial electronic device, which regulates electrochemical doping in organic semiconductor (OSC) channels by applying gate voltage, leading to high coupling between ions and electrons. This affects the current in the channel. In this review, we summarize the latest research progress regarding OECT-based artificial synapses and discuss the materials of OSC film and electrolyte, working mechanisms, and the applications in intelligent sensors, medical field, and flexible and wearable device. Furthermore, the problems faced by OECTs and their outlooks are analyzed.