OFET and OECT, Two Types of Organic Thin-Film Transistor Used in Glucose and DNA Biosensors: A Review

Due to their advantages of low cost, flexibility, ease of manufacture and biocompatibility, organic thin film transistor (OTFT) hold great commercial potential. Specifically, there are two types of OTFT, OFET and OECT, which are widely used in the field of flexible biological sensors and have great ability for glucose and DNA detection of diabetes. In this paper, we describe the working principles of OFET and OECT, and compare the differences between them. Some examples are given and clarified, including the materials, fabrication and chemical reactions. There is still a lot of space to be explored in OTFT for other biomarker sensing applications. With the emergence of new materials and fabrication techniques, OTFT-based biosensor would be more widely used in diagnostic equipment to improve patient outcomes.