Carbon Nanotube Field Effect Transistors (CNTFETs) are potential nanoscaled devices for realising high-performance, very dense, and low-power circuits. A Carbon Nanotube Field Effect Transistor is a FET that uses a single CNT or an array of CNTs as the channel material rather than bulk silicon as in a standard MOSFET configuration. A carbon nanotube is at the heart of a CNTFET. This paper provides an overview of CNTFETs-pH sensor based on carbon nanotubes (CNTs)-FETs-pH measurement range of 1.34 to 12.68, reliability, and low hysteresis, indicating a promising application prospect in harsher testing environments. The determination of carbamate pesticides-adjusting the VTH revealed that carbaryl and carbofuran additions had a favorable effect on the CFO/s-SWCNT-FET and structure. In this chapter, modeling, fabrication, and applications have been discusseddevices.
Keywords: Carbon nanotubes or Buckytube, FET-Uni-polar transistors, nanoelectronics, pH sensors, environmental stability, s-SWCNTs, CFO/s-SWCNT.
