Growth of "moth-eye" ZnO nanostructures on Si(111), c-Al2O3, ZnO and steel substrates by pulsed laser deposition

Vinod E. Sandana*, David J. Rogers, Ferechteh Hosseini Teherani, Philippe Bove, Michael Molinari, Michel Troyon, Alain Largeteau, Gérard Demazeau, Colin Scott, Gaelle Orsal, Henri Jean Drouhin, Abdallah Ougazzaden, Manijeh Razeghi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Self-forming, vertically-aligned, arrays of black-body-like ZnO moth-eye nanostructures were grown on Si(111), c-Al2O3, ZnO and high manganese austenitic steel substrates using Pulsed Laser Deposition. X-ray diffraction (XRD) revealed the nanostructures to be well-crystallised wurtzite ZnO with strong preferential c-axis crystallographic orientation along the growth direction for all the substrates. Cathodoluminescence (CL) studies revealed emission characteristic of the ZnO near band edge for all substrates. Such moth-eye nanostructures have a graded effective refractive index and exhibit black-body characteristics. Coatings with these features may offer improvements in photovoltaic and LED performance. Moreover, since ZnO nanostructures can be grown readily on a wide range of substrates it is suggested that such an approach could facilitate growth of GaN-based devices on mismatched and/or technologically important substrates, which may have been inaccessible till present.

Original languageEnglish (US)
Pages (from-to)1317-1321
Number of pages5
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume10
Issue number10
DOIs
StatePublished - Oct 1 2013

Keywords

  • Gallium nitride
  • Nanostructures
  • Pulsed laser deposition
  • Zinc oxide

ASJC Scopus subject areas

  • Condensed Matter Physics

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