Modeling & Simulation of High Performance Nanoscale MOSFETs

Agarwal, Pramod Kumar (2013) Modeling & Simulation of High Performance Nanoscale MOSFETs. MTech thesis.



Silicon-on-insulator (SOI) has been the forerunner of the CMOS technology in the last few decades offering superior CMOS devices with higher speed, higher density and reduced second order effects for submicron VLSI applications.A new type of transistor without junctions and no doping concentration gradients is analysed and demonstrated. These device structures address the challenge of short channel effects (SCEs) resulting with scaling of transistor dimensions and higher performance for deep submicron VLSI integration. Recent experimental studies have invigorated interest in partially depleted (PD) SOI devices because of their potentially superior scalability relative to bulk silicon CMOS devices. SELBOX structure offer an alternative way of suppressing kink effect and self heating effects in PD-SOI devices with a proper selection of oxide gap length. Also in order to mitigate the difficulties in fabrication of ultra thin devices for the semiconductor industry, resulting from scaling of gate length in MOSFET, a new device structure called junctionless (JL) transistors have recently been reported as an alternative device. In conclusion, extensive numerical simulation studies were used to explore and compare the electrical characteristics of SELBOX SOI MOSFET with a conventional single-material gate (SMG) bulk MOSFET. The proposed work investigates the DC and AC characteristics of the junctionless transistors. Also the performance analysis of JL transistors is compared and presented with the conventional DG MOSFET structure. The results presented in this work are expected to provide incentive for further experimental exploration.

Item Type:Thesis (MTech)
Uncontrolled Keywords:MOSFETs Scaling; SCEs; SELBOX Structure; Kink Effect; PD-SOI MOSFET; Junctionless Transistor
Subjects:Engineering and Technology > Electrical Engineering > Power Electronics
Divisions: Engineering and Technology > Department of Electrical Engineering
ID Code:5311
Deposited By:Hemanta Biswal
Deposited On:17 Dec 2013 10:01
Last Modified:17 Dec 2013 10:01
Supervisor(s):Sahu, P K

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