Abstract
This chapter mainly enlighten about the development and trends of the field effect transistors (FETs) in the nanoelectronics industries. According to Moore’s law, the number of transistors doubles in every 2 years because of transistor’s size is scaled down. Though the scaling of MOSFET has been the driving force towards the technological advancement, but due to continuous scaling various secondary effect which include; short channel effects, high leakage current, excessive process variation and reliability issue degrades the device performance. In today’s era, researchers are developing nano scaled transistors using various types of materials with different device geometries to reduce the limitations of conventional MOSFET. This chapter focuses on the development history, current-status and future trends of transistors. At the same time, the various protentional applications of nano-transistor discussed in this chapter.