Research Progress and Application of Fabric-Based Organic Electrochemical Transistors: A Review

With the development of wearable electronic devices and flexible biosensing technology, organic electrochemical transistors have received more and more attention. Fabric-based organic electrochemical transistors (F-OECTs) have a broad application prospect in wearable electronic devices due to their substrate flexibility, breathability and other advantages. This paper firstly introduces the structure and operation mechanism of flexible organic electrochemical transistors, secondly focuses on the relationship between F-OECT materials, fabrication methods, device structures, etc. and transistor performance, and finally describes the application of F-OECTs in various fields (e.g., biomolecule monitoring, gas monitoring, health monitoring, and synaptic neuromorphology), which clarifies the importance of F-OECTs for the development of wearable electronic devices. development of wearable electronic devices. In this paper, it is pointed out that F-OECT should ensure the bendability and stability of the transistor without decreasing the electrical performance (certain switching ratio and transconductance), and analyze the role of electrode materials, semiconductor materials, and preparation process in relation to the switching ratio and transconductance of F-OECT, so as to realize the wide application of F-OECT and to provide a reference for the design of wearable electronic devices.