Nano Science and Technology Institute
WCM 2005
WCM 2005
Technical Proceedings of the 2005 Workshop on Compact Modeling
Chapter 3: WCM 2004 Invited Papers

Quasi-2D Compact Modeling for Double-Gate MOSFET

Authors:M. Chan, T.Y. Man, J. He, X. Xi, C-H Lin, X. Lin, P.K. Ko, A.M. Niknejad and C. Hu
Affilation:Hong Kong University of Science and Technology, HK
Pages:271 - 276
Keywords:CMOS device, double-gate MOSFET, circuit simulation, device model, SPICE, BSIM
Abstract:This paper presents an approach to model the characteristics of undoped Double-Gate MOSFETs without relying on the charge-sheet approximation. Due to the extremely thin silicon film used, the inversion charge thickness becomes comparable to the silicon film thickness and cannot be ignored. Together with volume inversion and quantum effect, the carriers are distributed along the vertical direction perpendicular to the direction of current flow. Therefore, a 2-D modeling approach considering vertical current distribution and lateral carrier transport is required. To simplify the 2-D problem, the quasi-Fermi potential has been taken as a reference to develop a quasi 2-D DG MOSFET model.
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