Growth of novel ZnO nanostructures by soft chemical routes

R. Saravana Kumar, R. Sathyamoorthy, P. Matheswaran, P. Sudhagar, Yong Soo Kang

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

We explore a facile route to prepare one-dimensional (1D) ZnO nanostructures including nanorods/nanospines on glass substrates by integrating inexpensive successive ionic layer adsorption and reaction (SILAR) and chemical bath deposition (CBD) methods. The effect of seed layer on the growth and morphology of the ZnO nanostructures was investigated. Accordingly, the surface modification of the seed layer prepared by SILAR was carried out by employing two different drying processes namely (a) allowing the hot substrate to cool for certain period of time before immersing in the ion-exchange bath, and (b) immediate immersion of the hot substrate into the ion-exchange bath. X-ray diffraction (XRD) analysis of the ZnO films revealed hexagonal wurtzite structure with preferential orientation along c-axis, while the scanning electron microscopy (SEM) revealed the dart-like and spherical shaped ZnO seed particles. ZnO nanostructures grown by CBD over the dart-like and spherical shaped ZnO seed particles resulted in the hierarchical and aligned ZnO nanospines/nanorods respectively. Room temperature photoluminescence (PL) study exhibited highly intense UV emission with weak visible emissions in the visible region. The growth mechanism and the role of seed layer morphology on the formation of ZnO nanostructures were discussed.

Original languageEnglish
Pages (from-to)351-355
Number of pages5
JournalJournal of Alloys and Compounds
Volume506
Issue number1
DOIs
Publication statusPublished - 10 Sep 2010

Keywords

  • Chemical synthesis
  • Nanostructured materials
  • SEM
  • Semiconductors
  • Thin films
  • X-ray diffraction

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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