Analytical model for the high-temperature behaviour of the subthreshold slope in MuGFETs

Chi-Woo Lee, Dimitri Lederer, Aryan Afzalian, Ran Yan, Nima Dehdashti Akhavan, Jean-Pierre Colinge

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

As MuGFETs are promising contenders for the end of the silicon Roadmap, their high-temperature behaviour needs to be addressed. In this work we investigate the variations of the subthreshold slope (SS) of double-gate devices and MuGFETs with intrinsic doping as a function of the temperature and fin width. Focus is placed on the superlinear behaviour of SS occurring above a certain temperature threshold. Numerical simulations are performed using Comsol Multiphysics (TM) and a 1D analytical model is developed. The model, which includes the effect of film and gate oxide thickness, is shown to accurately fit the numerical data. A new definition for the subthreshold slope under high-temperature operation is proposed. The high-temperature subthreshold slope degradation is shown to increase with fin width. (C) 2009 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)2067-2071
Number of pages5
JournalMicroelectronic Engineering
Volume86
Issue number10
DOIs
Publication statusPublished - Oct 2009

Cite this