arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1105.5342cond-mat.mes-hall
收藏

用于传感器应用的纳米线肖特基势垒场效应晶体管的多尺度建模

Multiscale Modeling of Nanowire-based Schottky-Barrier Field-Effect Transistors for Sensor Applications

Daijiro Nozaki, Jens Kunstmann, Felix Zörgiebel, Walter M. Weber, Thomas Mikolajick, Gianaurelio Cuniberti

摘要:

我们提出了一个理论框架的计算电荷传输通过基于硅的肖特基势垒场效应晶体管,概念上是简单的,但仍然捕捉到相关的物理机制的运输过程。我们的方法结合了两种方法在不同的长度尺度:(1)有限元方法被用来模拟现实的设备的几何形状,并计算通过肖特基势垒的静电势求解泊松方程,和(2)的Landauer方法结合非平衡格林函数的方法被用来计算通过设备的电荷输运。我们的模型正确地再现了典型的I-V特性的场效应晶体管和饱和漏电流的依赖性的栅极场和器件的几何形状是在良好的协议与实验。我们的方法适用于任意器件几何形状的一维肖特基势垒场效应晶体管,并且旨在成为开发基于纳米线的传感器的模拟平台。

英文摘要:

We present a theoretical framework for the calculation of charge transport through nanowire-based Schottky-barrier field-effect transistors that is conceptually simple but still captures the relevant physical mechanisms of the transport process. Our approach combines two approaches on different length scales: (1) the finite elements method is used to model realistic device geometries and to calculate the electrostatic potential across the Schottky-barrier by solving the Poisson equation, and (2) the Landauer approach combined with the method of non-equilibrium Green's functions is employed to calculate the charge transport through the device. Our model correctly reproduces typical I-V characteristics of field-effect transistors and the dependence of the saturated drain current on the gate field and the device geometry are in good agreement with experiments. Our approach is suitable for one-dimensional Schottky-barrier field-effect transistors of arbitrary device geometry and it is intended to be a simulation platform for the development of nanowire-based sensors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑