Comprehensive study of ZnO nanostructures grown using chemical bath deposition: From growth to application

Z. N. Urgessa, D. M. Murape, O. S. Oluwafemi, A. Venter, M. Wagner, J. R. Botha

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)

Abstract

ZnO nanostructures were grown using a simple and environmentally friendly chemical bath deposition technique on pre-treated p-type silicon substrate at temperatures below 100°C. The effects of growth parameters like seed layer density, growth time, growth temperature, precursor concentration and annealing temperature on the structural, morphological, electrical and optical properties of ZnO nanorods were systematically studied using field emission scanning electron microscopy, X-ray diffraction, photoluminescence spectroscopy and current-voltage measurements. A variety of architectures is demonstrated, ranging from single crystalline nanoparticles and c-axis orientated nanorods to highly compact crystalline thin films. Post-growth annealing at different temperatures profoundly affects the optical properties of the nanorods by, for example, reducing hydrogen- and intrinsic defect-related emission. The rectifying properties of the ZnO/Si heterojunction are discussed.

Original languageEnglish
Title of host publicationSmart Nano-Micro Materials and Devices
DOIs
Publication statusPublished - 2011
Externally publishedYes
EventSmart Nano-Micro Materials and Devices - Hawthorn, VIC, Australia
Duration: 5 Dec 20117 Dec 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8204
ISSN (Print)0277-786X

Conference

ConferenceSmart Nano-Micro Materials and Devices
Country/TerritoryAustralia
CityHawthorn, VIC
Period5/12/117/12/11

Keywords

  • Diode
  • Growth conditions
  • Nano particles
  • Thin films
  • ZnO nanorods

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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