The potential barrier height at the interface formed by a metal contact and multiple one-dimensional (1D) quasi-ballistic channels in field-effect transistors (FETs) is evaluated across different carbon nanotube and nanowire device technologies by means of a Landauer-B\"uttiker-based extraction methodology (LBM) adapted for multiple 1D-channels. The extraction methodology yields values for an effective Schottky barrier height and a gate coupling coefficient, an indicator of the device working at the quantum capacitance limit. The novel LBM-based approach embracing the mechanisms in 1D electronics is compared to the conventional activation energy method not considering such effects. The latter approach underestimates the potential barrier height at metal-channel interfaces in comparison to the novel methodology. A test structure based on a displaced gate device is proposed based on numerical device simulation results towards an improved accuracy of the method.
@article{arxiv.2207.04760,
title = {Schottky-like barrier characterization of field-effect transistors with multiple quasi-ballistic channels},
author = {Anibal Pacheco-Sanchez and Quim Torrent and David Jiménez},
journal= {arXiv preprint arXiv:2207.04760},
year = {2022}
}