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A Schrödinger–Poisson model for output characteristics of trigate ballistic Si fin field effect transistors (FinFETs)
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields ( IF 1.6 ) Pub Date : 2021-06-28 , DOI: 10.1002/jnm.2927
Qamar‐ud‐din Memon 1 , Umer F. Ahmed 1 , Muhammad M. Ahmed 1
Affiliation  

This article presents a Schrödinger–Poisson based technique to predict urn:x-wiley:08943370:media:jnm2927:jnm2927-math-0002 characteristics of trigate Si fin field effect transistors (FinFETs). The channel characteristics are modeled by a three-dimensional (3D) Schrödinger wave equation considering quantum-mechanical ballistic transport. Using a nonequilibrium green function and a 3D Poisson equation, drain current associated with source-drain Fermi energy difference is evaluated. Contact resistance and its impact on the drain current is adjusted using a modeled parameter in Fermi-Dirac distribution function. It is observed that the drain current as a function of drain bias saturates because of the finite carrier supply from the source electrode. The model is calibrated using TCAD simulations for quantum transport. To validate the proposed model, output and transfer characteristics of nanoscale FinFETs are compared with experimental data and a good degree of accuracy is observed. It has been demonstrated that the proposed model has the ability to predict FinFETs characteristics having urn:x-wiley:08943370:media:jnm2927:jnm2927-math-0003.

中文翻译:

用于三栅极弹道 Si 鳍式场效应晶体管 (FinFET) 输出特性的薛定谔-泊松模型

本文介绍了一种基于薛定谔-泊松的技术来预测骨灰盒:x-wiley:08943370:媒体:jnm2927:jnm2927-math-0002三栅极硅鳍场效应晶体管 (FinFET) 的特性。通道特性通过考虑量子力学弹道传输的三维 (3D) 薛定谔波动方程建模。使用非平衡格林函数和 3D 泊松方程,评估与源漏费米能量差相关的漏电流。接触电阻及其对漏电流的影响使用费米-狄拉克分布函数中的建模参数进行调整。据观察,由于来自源电极的有限载流子供应,作为漏偏压函数的漏电流饱和。该模型使用量子传输的 TCAD 模拟进行校准。为了验证所提出的模型,纳米级 FinFET 的输出和传输特性与实验数据进行了比较,观察到了良好的精度。已经证明,所提出的模型能够预测具有以下特性的 FinFET 特性:骨灰盒:x-wiley:08943370:媒体:jnm2927:jnm2927-math-0003.
更新日期:2021-06-28
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