Nanotech 2007 Vol. 1
Nanotech 2007 Vol. 1
Technical Proceedings of the 2007 NSTI Nanotechnology Conference and Trade Show, Volume 1

Molecular and Nano Electronics Chapter 7

A Quasimolecular Approach to the Field-effect Molecular Transistor: Theory and Application

Authors: Y.-L. Zhao, T. Allison, V. Mujica, C. Gonzalez and M. Marquez

Affilation: NIST Center for Theoretical and Computational Nanosciences, United States

Pages: 559 - 561

Keywords: molecular conductance, gating, field-effect, computer modeling, Green-function, ab. initio

DFT-based modified quasimolecular approach has been developed and implemented for studying molecular conductance successfully, in the case of molecular bridges attached to metal electrodes (Gonzalez et al. J. Phys. Chem. B. 2004, 108, 18414). In this work, we extend this theory to study molecular transistors, in molecule-metal/semiconductor junctions under a mimic gating voltages. It has been found that the conductance of certain molecules could be significantly amplified at low bias voltages in the presence of a gating voltage. Origin of the observed transistor-diode behaviors may stem from a field-effect shift of molecular frontier orbital.

ISBN: 1-4200-6182-8
Pages: 726
Hardcopy: $139.95