Title: Three-dimensional simulation studies on electrostatic predictions for carbon nanotube field effect transistors
Authors: Chen, P. -Y.
Shao, Y. -L.
Cheng, K. -W.
Hsu, K. -H.
Wu, J. -S.
Ju, J. -P.
Department of Mechanical Engineering
Keywords: carbon nanotubes;field effect transistors;parallelized Poisson's equation solver;parallel adaptive mesh refinement
Issue Date: 1-Nov-2007
Abstract: Analysis of the electrostatic characteristics and the gate capacitance of typical nanostructured carbon nanotube field effect transistors (CNTFETs) were performed numerically. A previously developed parallelized electrostatic Poisson's equation solver (PPES) is employed, coupled with a parallel adaptive mesh refinement (PAMR) to improve the numerical accuracy near the region where variation of potentials are significant. CNTFETs with four typical configurations of the gate electrode, the bottom gate (BG), the double gate (DG), the top gate (TG), and the surrounding gate (SG) were simulated. Effects of the nanotube arrangement and the gate length on the gate capacitance are presented and discussed. The simulation results show that SG-CNTFET possesses the largest gate capacitance among various structures. However, TG-CNTFET is recommended for practical applications by taking into account both the device performance and the difficulty of fabrication. According to the simulated gate capacitance, estimation of the on-state current of CNTFETs is possible. (c) 2007 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.cpc.2007.06.016
ISSN: 0010-4655
DOI: 10.1016/j.cpc.2007.06.016
Volume: 177
Issue: 9
Begin Page: 683
End Page: 688
Appears in Collections:Articles

Files in This Item:

  1. 000250697900001.pdf