Abstract

Organic electrochemical transistors (OECTs) have been successfully used in numerous sensing applications, such as biosensors, photodetectors and chemical sensors. Our group have been working on OECT –based sensors for many years. In this talk, I will introduce the following applications: (1) High-performance biosensors based on OEC Ts. By modifying the gate electrodes of OEC Ts, we have realized the detection of various type of biomolecules, such as IgG antibody, protein biomarkers and RNA . (2) OEC Ts based on highly oriented 2-dimensional conjugated metal-organic frameworks (2D c-MOFs) (Cu3(HHTP)2). The ion-conductive vertical nanopores formed within the 2D c-MOFs films lead to the most convenient ion transfer in the bulk and high volumetric capacitance, endowing the devices with fast speeds and ultrahigh transconductance. (3) Highly sensitive photodetectors based on perovskite solar cell-gated OEC Ts. The devices show ultrahigh sensitivity and fast response speeds. (4) Flexible phototransistors based on 2D c-MOFs (Cu3(HHTT)2) thin films.