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Impact of Random Dopant Fluctuation Effect on Surrounding Gate MOSFETs: From Atomic Level Simulation to Circuit Performance Evaluation

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Abstract:

This paper investigates the impact of random dopant fluctuation effect on surrounding gate MOSFET, from atomic statistical simulation of device to circuit performance evaluation. The doping profile is generated by an analysis of each lattice atom and then the threshold voltage variation is obtained by device Drift-Diffusion simulation. Then the circuit performance evaluation is performed by feeding the result into a surrounding-gate MOSFET model. It is shown that a significant fluctuation in threshold voltage is due to the decreasing volume. The circuit simulation results also reveal that a surrounding gate MOSFET based 6-T SRAM presents a promising resistibility to noise disturbance.

Keywords: ATOMIC; DOPANT FLUCTUATION; SURROUNDING GATE MOSFET

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2011.3985

Publication date: December 1, 2011

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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