Please use this identifier to cite or link to this item:
Title: Direct tunneling hole currents through ultrathin gate oxides in metal-oxide-semiconductor devices
Authors: Hou, Y.T. 
Li, M.F. 
Jin, Y.
Lai, W.H.
Issue Date: 1-Jan-2002
Citation: Hou, Y.T., Li, M.F., Jin, Y., Lai, W.H. (2002-01-01). Direct tunneling hole currents through ultrathin gate oxides in metal-oxide-semiconductor devices. Journal of Applied Physics 91 (1) : 258-264. ScholarBank@NUS Repository.
Abstract: We present a physical model to calculate the direct tunneling hole current through ultrathin gate oxides from the inversion layer of metal-oxide-semiconductor field-effect transistors. A parametric self-consistency method utilizing the triangular well approximation is used for the electrostatics of the inversion layer. For hole quantization in the inversion layer, an improved one-band effective mass approximation, which is a good approximation to the rigorous six-band effective mass theory, is used to account for the band-mixing effect. The tunneling probability is calculated by a modified Wentzel-Kramers-Brilliouin (WKB) approximation, which takes the reflections near the Si/SiO2 interfaces into account. It is found that the parabolic dispersion in the SiO2 band gap used in the WKB approximation is only applicable for hole tunneling in oxides thinner than about 2 nm and for low gate voltage. A more reasonable Freeman-Dahlke hole dispersion form with significantly improved fitting to all experimental data for different oxide thickness and gate voltage range is adopted and discussed. © 2002 American Institute of Physics.
Source Title: Journal of Applied Physics
ISSN: 00218979
DOI: 10.1063/1.1416861
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Jan 30, 2023


checked on Jan 30, 2023

Page view(s)

checked on Jan 26, 2023

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.