Journal of Materials Science

, Volume 29, Issue 6, pp 1497–1500 | Cite as

Morphology of polycrystalline ZnO and its physical properties

  • L. Koudelka
  • J. Horák
  • P. Jariabka


Five commercial polycrystalline ZnO samples with different morphologies (nodular and needle-like) have been studied. Nodular ZnO crystallites reveal lower polydispersity, higher ultraviolet luminescence (380 nm), low green luminescence (500 nm), a small ESR signal with g=1.96 and a density close to the theoretical value for ZnO with the wurtzite structure. Needle-like ZnO crystallites have a higher polydispersity, higher green luminescence, higher ESR signal with g=1.96 and lower values of density. The observed differences in the physical properties are associated with the presence of oxygen vacancies in needle-like particles and probably also interstitial zinc atoms in nodular particles.


Wurtzite Zinc Atom Green Luminescence Lower Polydispersity Interstitial Zinc 
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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • L. Koudelka
    • 1
  • J. Horák
    • 1
  • P. Jariabka
    • 2
  1. 1.University of Chemical TechnologyPardubiceCzech Republic
  2. 2.SlovlakKošecaSlovakia

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