Journal of Sol-Gel Science and Technology

, Volume 38, Issue 1, pp 79–84

Growth and Characterization of [001] ZnO Nanorod Array on ITO Substrate with Electric Field Assisted Nucleation

Article

DOI: 10.1007/s10971-006-5731-9

Cite this article as:
Kim, Y.J., Shang, H. & Cao, G. J Sol-Gel Sci Technol (2006) 38: 79. doi:10.1007/s10971-006-5731-9

Abstract

This paper reports direct growth of [001] ZnO nanorod arrays on ITO substrate from aqueous solution with electric field assisted nucleation, followed with thermal annealing. X-ray diffraction analyses revealed that nanorods have wurtzite crystal structure. The diameter of ZnO nanorods was 60–300 nm and the length was up to 2.5 μm depending on the growth condition. Photoluminescence spectra showed a broad emission band spreading from 500 to 870 nm, which suggests that ZnO nanorods have a high density of oxygen interstitials. Low and nonlinear electrical conductivity of ZnO nanorod array was observed, which was ascribed to non-ohmic contact between top electrode and ZnO nanorods and the low concentration of oxygen vacancies.

Keywords

ZnO nanorod array electric field assisted nucleation aqueous solution growth 

Copyright information

© Springer Science + Business Media, LLC 2006

Authors and Affiliations

  1. 1.Department of Materials Science and EngineeringUniversity of WashingtonSeattle
  2. 2.Division of Materials & Chemical EngineeringSun Moon UniversityAsanKorea

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