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- Title
Large-signal model of 2DFETs: compact modeling of terminal charges and intrinsic capacitances.
- Authors
Pasadas, Francisco; Marin, Enrique G.; Toral-Lopez, Alejandro; Ruiz, Francisco G.; Godoy, Andrés; Park, Saungeun; Akinwande, Deji; Jiménez, David
- Abstract
We present a physics-based circuit-compatible model for double-gated two-dimensional semiconductor-based field-effect transistors, which provides explicit expressions for the drain current, terminal charges, and intrinsic capacitances. The drain current model is based on the drift-diffusion mechanism for the carrier transport and considers Fermi–Dirac statistics coupled with an appropriate field-effect approach. The terminal charge and intrinsic capacitance models are calculated adopting a Ward–Dutton linear charge partition scheme that guarantees charge conservation. It has been implemented in Verilog-A to make it compatible with standard circuit simulators. In order to benchmark the proposed modeling framework we also present experimental DC and high-frequency measurements of a purposely fabricated monolayer MoS2-FET showing excellent agreement between the model and the experiment and thus demonstrating the capabilities of the combined approach to predict the performance of 2DFETs.
- Subjects
TRANSISTORS; SEMICONDUCTORS; DIRECT currents; QUANTUM capacitance; BAND gaps
- Publication
NPJ 2D Materials & Applications, 2019, Vol 3, Issue 1, pN.PAG
- ISSN
2397-7132
- Publication type
Article
- DOI
10.1038/s41699-019-0130-6