Table of Contents
VLSI Design
Volume 6, Issue 1-4, Pages 83-86
http://dx.doi.org/10.1155/1998/78412

Self-Consistent Scattering Calculation of Resonant Tunneling Diode Characteristics

Department of Electrical Engineering and Computer Science, The University of Michigan, Ann Arbor, MI 48109-2122, USA

Copyright © 1998 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We perform a self-consistent calculation of resonant tunneling diode (RTD) I-V characteristics including optical phonon scattering. The self-consistency is obtained by solving the Schrödinger equation and Poisson’s equation iteratively with the Thomas-Fermi approximation used for the device contact regions. For evaluation of phonon-assisted current density, the optical phonon scattering in the quantum well is modeled using the optical model potential. Electron transverse momentum is also incorporated. The calculated current and electron wavefunction illustrate the optical model and effects of the phonon scattering on the current transport. The I-V characteristics we obtain from the model calculation are in good agreement with experimental results. This work manifests the importance of including self-consistency, optical phonon scattering, and electron transverse momentum in modeling realistic RTD structures.