Large-scale ZnO inverse opal films fabricated by a sol-gel technique

Vera Abramova, Alexander Sinitskii

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

We demonstrate that high-quality large-scale ZnO inverse opals can be fabricated by a simple sol-gel technique, comprising infiltration of polystyrene colloidal crystal films with zinc nitrate solution, drying and annealing at 300 {ring operator}C. This simple method yields continuous films, which consist of inverse opal domains (up to several hundreds of μm2 in size), separated by small cracks filled with zinc oxide. Microradian X-ray diffraction was employed to verify the crystalline quality of ZnO inverse opals on the macroscale, revealing that the samples have a predominant face-centered cubic structure, and that the majority of domains have the same crystallographic orientation. The samples exhibit bright iridescence and possess photonic stop-bands in the visible to near-infrared spectrum.

Original languageEnglish (US)
Pages (from-to)624-629
Number of pages6
JournalSuperlattices and Microstructures
Volume45
Issue number6
DOIs
StatePublished - Jun 1 2009

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Keywords

  • Domain structure
  • Inverse opals
  • Microradian X-ray diffraction
  • Photonic crystals
  • Photonic stop-bands
  • ZnO

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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