Taper PbZr0.2Ti0.8O3 Nanowire Arrays : From Controlled Growth by Pulsed Laser Deposition to Piezopotential Measurements

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Yu-Ze Chen
  • Te-Hsiang Liu
  • Cheng-Ying Chen
  • Chin-Hung Liu
  • Szu-Ying Chen
  • Wen-Wei Wu
  • Zhong Lin Wang
  • Ying-Hao Chu
  • Yu-Lun Chueh

Detail(s)

Original languageEnglish
Pages (from-to)2826-2832
Journal / PublicationACS Nano
Volume6
Issue number3
Online published29 Feb 2012
Publication statusPublished - 27 Mar 2012
Externally publishedYes

Abstract

Single crystalline PbZr0.2Ti0.8 (PZT) nanowires arrays (NWAs) with taper morphology were epitaxially grown on SrTiO3 (STO) substrate using pulse laser deposition. The taper morphology was attributed to the overcoating of PZT layer via a lateral growth of PZT clusters/adatoms during PZT NW growth. The growth window for PZT film or nanowire was systematically studied at varied temperatures and pressures. The proposed growth mechanism of the taper PZT NWAs was investigated from a layer by layer growth via Frank-Van Der Merwe growth, followed by a formation of three-dimensional islands via Stranski-Krastanow growth, and then axial growth on the lowest energy (001) plane with growth direction of [001] via vapor-solid growth mechanism. However, under certain conditions such as at higher or lower pressure (>400 or <200 mTorr) or substrate temperatures (>850 °C and <725 °C), formation of the PZT NWs is suppressed while the epitaxial PZT thin film via the layer-by-layer growth remains. The controllable growth directions of the PZT NWAs on (001), (110), and (111) STO substrates were demonstrated. The piezopotential of the taper PZT NWAs using a conducting atomic force microscope with the average voltage output of ∼18 mV was measured. The theoretical piezopotential of a PZT NW was calculated to compare with the measured outputs, providing a comprehensively experimental and theoretical understanding of the piezoelectricity for the PZT NW.

Research Area(s)

  • piezopotential, pulsed laser deposition, PZT nanowire arrays, vapor-solid growth

Citation Format(s)

Taper PbZr0.2Ti0.8O3 Nanowire Arrays : From Controlled Growth by Pulsed Laser Deposition to Piezopotential Measurements. / Chen, Yu-Ze; Liu, Te-Hsiang; Chen, Cheng-Ying et al.

In: ACS Nano, Vol. 6, No. 3, 27.03.2012, p. 2826-2832.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review