Disadvantages of FinFET

What is FinFET?

FINFET stands for Fin Field Effect Transistor it belongs to the FET family and it is a type of Multi gate MOSFET that is used in place of a common MOSFET. Unlike regular FETs which are planar in shape, FINFET is non-planar having a 3D structure. FINFET is built on the silicon substrate and the gate is surrounded by the channel forming drain and source. The name FINFET is derived from the fin of fish as the top view of FINFET drain and source appears like fin. Fin can also be defined as the channel between the drain and the source.Like MOSFET, FINFET is also built on silicon on an insulator (SOI) It is also a three-terminal device forming gate, drain, and source, and the fabrication of FINFET is similar to MOSFET. FINFET and MOSFET work on the same principle....

Why use a FinFET device in place of MOSFET?

As to increase the number of transistors in a chip the size of transistor is to be reduced, the size of the transistor is reduced by decreasing the channel length between the drain and source, but as channel length decreases drain and source come close to each other and the problem of short channel effect arises in common MOSFETs and the leakage current increases between source and drain....

Basic Structure of FinFET

The basic structure of FinFET consist of 3D shaped Fin , gate , drain and source and substrate...

Computing FinFET Transistor Width

Width of transistor is denoted by w , w plays a crucial role in determining the current flowing through transistor , short – channel effect . width is also used to determine aspect ratio(w/l) which decide the design rule of transistor . For a double gate finFET w is equals to twice of FinFET effective height....

Difference Between FinFET and MOSFET

FinFET and MOSFET belongs to the family of FET and following are the difference between and FinFET and MOSFET...

Classification Of FinFET

FinFET Can be classified as following on the basic of –...

Classification Of FinFET on the basis of Type of Substrate

On the basic of type of substrate FINFET is of following two types...

Advantages of FinFET

Less power consumption Less leakage current Short channel effect is less Less channel doping Higher scalability High voltage gain and good subthreshold voltage...

Disadvantages of FinFET

It is difficult to control dynamic threshold voltage. Due to 3d structure it have higher internal resistances and capacitances. Complex in fabrication and costly. Complex to design its structure. More Temperature sensitivity. More heat dissipation. Very high capacitances....

Application Of Fin FET

Fin FET is widely used in various applications due to its various advantages some of the applications of FinFET are listed below :...

Future Of FinFET

Introduction of FinFET have changed semiconductor industry a lot . As every coin have two face same with the future of FinFET it have lots of opportunities as well as lots of challenges in industry . In future FinFET will be scaled down to 5nm to 3 nm with more energy efficient but this will be costly .so researchers are exploring new ways and have developed Gate All Around Transistor (GAAFET) It have multiple gate around fins. It can be scaled down below 3 nm and have faster switching speed then FinFET ....

Conclusion

FinFET is a great innovation in field of microelectronics which have helped in the solving the challenges of microelectronic and helped to reach semiconductor industry to a good extent . It not only helped to scale down size of transistor but also helped to improve electric current and use less energy consumption . It have increased the performance of transistor and due to its structure also reduced the leakage current . Despite of its complex fabrication and typical complexity in designing process it have been widely used in devices and have bring new turn in semiconductor industry innovations....

FAQs on FinFET

1. FINFET is voltage controlled or current controlled?...