Analytic Modeling of a Depletion-Mode Cylindrical Surrounding-Gate Nanowire Field-Effect Transistor
Authors: Yu, Yun Seop; Park, Hyung-Kun
Source: Journal of Nanoscience and Nanotechnology, Volume 12, Number 7, July 2012 , pp. 5925-5929(5)
Publisher: American Scientific Publishers
Abstract:A compact model for depletion-mode p-type cylindrical surrounding-gate nanowire field-effect transistors (SGNWFETs) is proposed. The SGNWFET model consists of two back-to-back Schottky diodes for the metal-semiconductor (MS) contacts and the intrinsic SGNWFET. Based on the electrostatic method, the intrinsic SGNWFET model was derived from current conduction mechanisms attributed to bulk charges through the center neutral region, in addition to accumulation charges through the surface accumulation region. The authors' previously developed Schottky diode model was used for the M-S contacts. The new model was applied to an advanced design system (ADS), whereby the intrinsic part of the SGNWFET and the Schottky diode were developed using the Verilog-A language. The results of the simulation of the newly developed SGNWFET model reproduced the experiment results considerably well.
Document Type: Research Article
Publication date: July 1, 2012
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