Carbon Nanotube and Its Application in Transistor and Sensor

Carbon nanotubes (CNTs), a new type of nanomaterial, exhibits typical circular tube structure. CNTs have excellent mechanical, electrical, and chemical properties. CNTs have excellent mechanical, electrical, and chemical properties. With the deepening of research on nanomaterials, their application fields have been expanded in recent years. It has become one of the most commonly used functional materials in the semiconductor field. The use of CNTs for modification in transistors has become a research hotspot. At the same time, as a key material for improving the performance of sensors, CNTs are also receiving increasing attention. In this article, the main electrical properties of CNTs were discussed. In addition, the current-voltage relation is also studied in different transistors. For CNT-based transistor, MOSFET and Schottky barrier field effect transistor (SB FET) were highlighted. The application of CNTs in sensors has also been introduced. Bare CNTs used for sensors were reviewed. Several different modification methods are introduced for this type of sensor. Metal particles, organic groups, and aromatic hydrocarbon for modification of CNT sensors have been discussed. According to different characters, they could be applied in real-time detecting and biochemical environment detecting.