Jump to main content
Jump to site search

Issue 47, 2015
Previous Article Next Article

Electromechanical coupling and design considerations in single-layer MoS2 suspended-channel transistors and resonators

Author affiliations

Abstract

We report on the analysis of electromechanical coupling effects in suspended doubly-clamped single-layer MoS2 structures, and the designs of suspended-channel field-effect transistors (FETs) and vibrating-channel nanoelectromechanical resonators. In DC gating scenario, signal transduction processes including electrostatic actuation, deflection, straining on bandgap, mobility, carrier density and their intricate cross-interactions, have been analyzed considering strain-enhanced mobility (by up to 4 times), to determine the transfer characteristics. In AC gating scenario and resonant operations (using 100 MHz and 1 GHz devices as relevant targets), we demonstrate that the vibrating-channel MoS2 devices can offer enhanced signals (than the zero-bandgap graphene counterparts), thanks to the resonant straining effects on electron transport of the semiconducting channel. We also show dependence of signal intensity and signal-to-background ratio (SBR) on device geometries and scaling effects, with SBR enhancement by a factor of ∼8 for resonance signal, which provide guidelines toward designing future devices with desirable parameters.

Graphical abstract: Electromechanical coupling and design considerations in single-layer MoS2 suspended-channel transistors and resonators

Back to tab navigation

Publication details

The article was received on 07 Sep 2015, accepted on 11 Oct 2015 and first published on 09 Nov 2015


Article type: Communication
DOI: 10.1039/C5NR06118K
Author version available: Download Author version (PDF)
Citation: Nanoscale, 2015,7, 19921-19929
  •   Request permissions

    Electromechanical coupling and design considerations in single-layer MoS2 suspended-channel transistors and resonators

    R. Yang, A. Islam and P. X.-L. Feng, Nanoscale, 2015, 7, 19921
    DOI: 10.1039/C5NR06118K

Search articles by author

Spotlight

Advertisements