Electrostatic potential in a bent piezoelectric nanowire with consideration of size-dependent piezoelectricity and semiconducting characterization

K. F. Wang, B. L. Wang

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

Determining the electric potential in a bent piezoelectric nanowire (NW) is a fundamental issue of nanogenerators and nanopiezotronics. The combined influence of the flexoelectric effect, the semiconducting performance and the angle of atomic force microscope (AFM) tip has never been studied previously and will be investigated in this paper. The exact solution for the electric potential of a bent piezoelectric semiconductor NW is derived. The electric potential of the present model with consideration of flexoelectric effect varies along the length of the NW and is different from that of the classical piezoelectric model. Flexoelectric effect enhances but the semiconducting performance reduces the electric potential of the NW. In addition, it is found that if the angle of the AFM tip reaches 30̊, the error of the electric potential obtained from the model ignored the effect of the angle of the AFM tip is almost 16%, which is unacceptable.
Original languageEnglish
Article number255405
Number of pages10
JournalNanotechnology
Volume29
Issue number25
DOIs
Publication statusPublished - 2018

Keywords

  • electric properties
  • nanowires
  • piezoelectric devices
  • semiconductors

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