Organic thin-film transistors and their application to sensors

Organic thin-film transistors (OTFTs) have attracted extensive attention due to their unique properties, such as the diversity of organic materials, easy fabrication approaches and compatibility with flexible substrates. This paper introduces the research progress of OTFTs, and further analyzes the basic structure, working principle and electrical properties of OTFTs. The development history of sensors based on OTFTs are summarized. The advantages of the OTFT-based sensors are introduced with emphasis on their sensitivity and selectivity. Finally, the working mechanism of the OTFT-based sensors is analyzed.