Analytical calculation of subthreshold slope increase in short-channel MOSFET's by taking drift component into account

Modeling of the subthreshold slope S and the threshold voltage V T has been done based on the fundamental equations governing the metal-oxide-semiconductor field-effect transistor (MOSFET). Taking the drift as well as the diffusion component of the current into account resulted in a physically compl...

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Published in:Japanese Journal of Applied Physics 1995-02, Vol.34 (2B), p.917-920
Main Authors: BIESEMANS, S, DE MEYER, K
Format: Article
Language:English
Subjects:
Applied sciences
Electronics
Exact sciences and technology
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Transistors
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description Modeling of the subthreshold slope S and the threshold voltage V T has been done based on the fundamental equations governing the metal-oxide-semiconductor field-effect transistor (MOSFET). Taking the drift as well as the diffusion component of the current into account resulted in a physically complete description of the short-channel effect. The method calculates the potential from the 2D Poisson equation, the minority carrier density from the continuity equation and the weak inversion current density from the drift-diffusion model. As an example, the detailed calculation of the S factor is given. The new closed-form formula for S includes the L dependence in an accurate way.
doi_str_mv 10.1143/jjap.34.917
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source Institute of Physics; Institute of Physics:Jisc Collections:IOP Publishing Read and Publish 2024-2025 (Reading List)
subjects Applied sciences
Electronics
Exact sciences and technology
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Transistors
title Analytical calculation of subthreshold slope increase in short-channel MOSFET's by taking drift component into account
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