Title

New approach for defining the threshold voltage of MOSFETs

Authors

Authors

J. A. Salcedo; A. Ortiz-Conde; F. J. G. Sanchez; J. Muci; J. J. Liou;Y. Yue

Abbreviated Journal Title

IEEE Trans. Electron Devices

Keywords

Engineering, Electrical & Electronic; Physics, Applied

Abstract

The threshold voltage of MOSFETs has traditionally been defined as the gate voltage required to cause the surface potential to be equal to twice the Fermi potential in the bulk of semiconductor. Such a definition, although widely used for modeling long-channel MOSFET's, becomes increasingly questionable for modern devices with diminishing channel lengths, In this paper a new approach is proposed which defines the threshold voltage based on the intersection of the two asymptotes of the surface potential for the depletion and strong inversion regions. The approach is tested in simulation environment for MOS devices having different channel lengths, oxide thicknesses, and substrate doping concentrations.

Journal Title

Ieee Transactions on Electron Devices

Volume

48

Issue/Number

4

Publication Date

1-1-2001

Document Type

Article

Language

English

First Page

809

Last Page

813

WOS Identifier

WOS:000167985100028

ISSN

0018-9383

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