A Physics-Based Model of Vertical TFET--Part I: Modeling of Electric Potential
Date
2022-05-13
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
IEEE Transactions on Electron Devices
Abstract
A physics-based model for the electric potential of vertical TFET is presented in this article. The electric potential formula is derived for the first time from the multi-branch general solutions of Poisson's equation for TFET. The effect of electron inversion charge in the channel is taken into account. A novel approach incorporating the effect of hole mobile charge in the source depletion region is proposed. The model's accuracy is significantly improved compared with the previous source's fully depleted approximation. The model is proven to be accurate in all operating regions. The model's results are verified with TCAD simulation for different structural and material parameters.
Description
© 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Keywords
Compact model, line tunneling, Poisson's equation, vertical TFET
Citation
Q. Cheng, S. Khandelwal and Y. Zeng, "A Physics-Based Model of Vertical TFET--Part I: Modeling of Electric Potential," in IEEE Transactions on Electron Devices, doi: 10.1109/TED.2022.3172929.