Semiconductor Industry has marched at the pace of

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Last updated: August 16, 2019

Semiconductor Industry has marched at the pace of Moore’s Law.

The number of transistors doubling associated with continuous transistor scaling has been the uniqueness of the semiconductor Industry. Each newer technology generation produces denser & faster transistors that can switch fast compared to the previous generation technology 1.The size of the transistors is decreasing continuously with the decrease in the thickness of the silicon dioxide gate dielectric to increase the gate capacitance and thereby increasing the drive current, which ultimately provides better device performance 14. The CMOS scaling of the devices is facing challenges due to shrinking geometries, lower supply voltage, and higher frequencies, which have negative impact on the device by increasing short channel effect due to which leakage (gate leakage and sub-threshold leakage) in the device is increasing constantly. The enhancement in the scaling technology has increased the need of low power based circuits 14.

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In nanometer devices, CMOS based circuit are not used due to problem in its fundamental material, short channel effect and high leakage 14. New technologies are needed for handling the various effects of MOSFET technology. As the planar MOSFETs shows a significant SCE (Short Channel Effect) and hence the designers are concentrating on FinFETs, which have negligible SCE for the same channel length. FinFETs have attracted increasing attention over the past decade because of the degrading short-channel behaviour of planar MOSFETs. In the planar MOSFET channel is horizontal, the FinFET channel (also known as the fin) is vertical. With multiple fins and smaller fin heights leads to more flexible and width of the channel can be increased, which in turn leads to more silicon area.

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