Surface potential response from GaP nanowires synthesized with mixed crystal phases

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Researchers

Research units

  • Lappeenranta-Lahti University of Technology LUT
  • Universität Osnabruck
  • Novosibirsk State University
  • Russian Academy of Sciences, Ioffe Physical-Technical Institute

Abstract

In this work, we investigate variations of surface potentials along a single gallium phosphide (GaP) nanowire (NW) synthesized with a mixed crystal phase along the growth direction. GaP NWs synthesized with both wurtzite (WZ) and zincblende (ZB) phases were studied. The measurements were performed on a standard Atomic Force Microscopy (AFM) set-up equipped with Kelvin Probe Force Microscopy (KPFM) module in PeakForce Tapping Mode. KPFM Measurements from two structures were analyzed. Variations of surface poten-tials were observed in a single GaP NW with WZ/ZB segments. An average difference in surface potential was 55±11 mV. This is explained by different crystal structures along the NW. The work expands the understanding of crystal structure-dependent electrical transport properties of GaP NWs.

Details

Original languageEnglish
Article number044018
JournalJournal of Physics: Conference Series
Volume1400
Publication statusPublished - 2019
MoE publication typeA4 Article in a conference publication
EventInternational Conference PhysicA.SPb - St. Petersburg, Russian Federation
Duration: 22 Oct 201924 Oct 2019

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