Tuning growth direction of catalyst-free InAs(Sb) nanowires with indium droplets

Research output: Contribution to journalArticle

Abstract

The need for indium droplets to initiate self-catalyzed growth of InAs nanowires has been highly debated in the last few years. Here, we report on the use of indium droplets to tune the growth direction of self-catalyzed InAs nanowires. The indium droplets are formed in situ on InAs(Sb) stems. Their position is modified to promote growth in the 〈11-2〉 or equivalent directions. We also show that indium droplets can be used for the fabrication of InSb insertions in InAsSb nanowires. Our results demonstrate that indium droplets can initiate growth of InAs nanostructures as well as provide added flexibility to nanowire growth, enabling the formation of kinks and heterostructures, and offer a new approach in the growth of defect-free crystals.

Details

Authors
  • Heidi Potts
  • Nicholas P Morgan
  • Gözde Tütüncüoglu
  • Martin Friedl
  • Anna Fontcuberta I Morral
External organisations
  • Swiss Federal Institute of Technology
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Nano Technology
Original languageEnglish
Pages (from-to)054001
JournalNanotechnology
Volume28
Issue number5
Publication statusPublished - 2017 Feb 3
Publication categoryResearch
Peer-reviewedYes
Externally publishedYes