Nano Research

, Volume 8, Issue 12, pp 4048–4060 | Cite as

Complete thermoelectric benchmarking of individual InSb nanowires using combined micro-Raman and electric transport analysis

  • Sara Yazji
  • Eric A. Hoffman
  • Daniele Ercolani
  • Francesco Rossella
  • Alessandro Pitanti
  • Alessandro Cavalli
  • Stefano Roddaro
  • Gerhard Abstreiter
  • Lucia Sorba
  • Ilaria Zardo
Research Article


Nanowires (NWs) are ideal nanostructures for exploring the effects of low dimensionality and thermal conductivity suppression on thermoelectric behavior. However, it is challenging to accurately measure temperature gradients and heat flow in such systems. Here, using a combination of spatially resolved Raman spectroscopy and transport measurements, we determine all the thermoelectric properties of single Se-doped InSb NWs and quantify the figure of merit ZT. The measured laser-induced heating in the NWs and associated electrical response are well described by a 1D heat equation model. Our method allows the determination of the thermal contact resistances at the source and drain electrodes of the NW, which are negligible in our system. The measured thermoelectric parameters of InSb NWs agree well with those obtained based on field-effect transistor Seebeck measurements.


thermoelectric thermoelectric figure of merit Raman spectroscopy field-effect transistor measurements nanowire InSb 


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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Sara Yazji
    • 1
    • 2
  • Eric A. Hoffman
    • 1
    • 2
  • Daniele Ercolani
    • 3
  • Francesco Rossella
    • 3
  • Alessandro Pitanti
    • 3
  • Alessandro Cavalli
    • 1
  • Stefano Roddaro
    • 3
  • Gerhard Abstreiter
    • 1
    • 2
  • Lucia Sorba
    • 3
  • Ilaria Zardo
    • 1
    • 4
  1. 1.Walter Schottky Institut & Physik DepartmentTechnische Universität MünchenGarchingGermany
  2. 2.Institute for Advanced StudyTechnische Universität MünchenGarchingGermany
  3. 3.NESTIstituto Nanoscienze-CNR and Scuola Normale SuperiorePisaItaly
  4. 4.Department of PhysicsUniversity of BaselBaselSwitzerland

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