IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
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Theoretical simulation of DC and RF performance for AlInN/InGaN/AlInN double-heterojunction FET using a Monte Carlo approach
Kazuki KodamaMasaaki Kuzuhara
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2008 Volume 5 Issue 24 Pages 1074-1079

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Abstract

A theoretical prediction of beyond-THz frequency operation is demonstrated for a III-nitride heterojunction FET with a gate length of sub-100nm. The calculation is based upon an ensemble Monte Carlo simulation coupled with a 2D Poisson equation. The simulation results suggest that a current gain cutoff frequency of more than 1THz is achieved by an AlInN/InN/AlInN or AlInN/InGaN/AlInN double-heterojunction FET with a gate length of less than 50nm or 30nm, respectively, which are fabricated on a non-polar GaN substrate. The importance of high-mobility InN and InGaN used as a channel material for high-speed and high-frequency applications is numerically verified.

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© 2008 by The Institute of Electronics, Information and Communication Engineers
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