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Analytical model of the threshold voltage and subthreshold swing of undoped cylindrical gate-all-around-based MOSFETs

  • Universidad Rovira i Virgili
  • LAAS / CNRS

Research output: Contribution to journalArticlepeer-review

156 Scopus citations

Abstract

Analytical physically based models for the threshold voltage, subthreshold swing, and drain-induced barrier lowering (DIBL) of undoped cylindrical gate-all-around MOSFETs have been derived based on an analytical solution of 2-D Poisson's equation (in cylindrical coordinates) in which the mobile charge term has been included. Using the new model, threshold voltage, DIBL and subthreshold swing sensitivities to channel length, and channel thickness have been investigated. The models for DIBL, subthreshold swing, and threshold voltage rolloff parameters have been verified by comparison with 3-D numerical simulations; close agreement with the numerical simulations has been observed.

Original languageEnglish
Pages (from-to)572-579
Number of pages8
JournalIEEE Transactions on Electron Devices
Volume54
Issue number3
DOIs
StatePublished - Mar 2007
Externally publishedYes

Keywords

  • Device modeling
  • Downscaling
  • Drain-induced barrier lowering (DIBL)
  • Gate-all-around (GAA)
  • MOSFET
  • Subthreshold swing
  • Threshold voltage

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