Using Polymer Electrolyte Gates to Set-and-Freeze Threshold Voltage and Local Potential in Nanowire-based Devices and Thermoelectrics

Research output: Contribution to journalArticle

Abstract

The strongly temperature-dependent ionic mobility in polymer electrolytes is used to freeze in specific ionic charge environments around a nanowire using a local wrap-gate geometry. This makes it possible to set both the threshold voltage for a conventional doped substrate gate and the local disorder potential at temperatures below 220 K. These are characterized in detail by combining conductance and thermovoltage measurements with modeling. The results demonstrate that local polymer electrolyte gates are compatible with nanowire thermoelectrics, where they offer the advantage of a very low thermal conductivity, and hold great potential towards setting the optimal operating point for solid-state cooling applications.

Details

Authors
Organisations
External organisations
  • University of New South Wales
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Condensed Matter Physics

Keywords

  • nanowires, polymer electrolytes, thermoelectrics, quantum dots
Original languageEnglish
Pages (from-to)255-262
JournalAdvanced Functional Materials
Volume25
Issue number2
Publication statusPublished - 2015
Publication categoryResearch
Peer-reviewedYes