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Portrait of Heiner Linke; Photo: Kennet Ruona

Heiner Linke

Professor, Deputy dean at Faculty of Engineering, LTH

Portrait of Heiner Linke; Photo: Kennet Ruona

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

Author

  • Sofia Fahlvik Svensson
  • Adam M. Burke
  • Damon J. Carrad
  • Martin Leijnse
  • Heiner Linke
  • Adam P. Micolich

Summary, in English

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.

Department/s

  • Solid State Physics

Publishing year

2015

Language

English

Pages

255-262

Publication/Series

Advanced Functional Materials

Volume

25

Issue

2

Document type

Journal article

Publisher

Wiley-VCH Verlag

Topic

  • Condensed Matter Physics

Keywords

  • nanowires
  • polymer electrolytes
  • thermoelectrics
  • quantum dots

Status

Published

ISBN/ISSN/Other

  • ISSN: 1616-3028