Your browser has javascript turned off or blocked. This will lead to some parts of our website to not work properly or at all. Turn on javascript for best performance.

The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Portrait of Reine Wallenberg. Photo: Kennet Ruona

Reine Wallenberg

Professor, Coordinator Materials Science

Portrait of Reine Wallenberg. Photo: Kennet Ruona

In situ analysis of catalyst composition during gold catalyzed GaAs nanowire growth

Author

  • Carina B. Maliakkal
  • Daniel Jacobsson
  • Marcus Tornberg
  • Axel R. Persson
  • Jonas Johansson
  • Reine Wallenberg
  • Kimberly A. Dick

Summary, in English

Semiconductor nanowires offer the opportunity to incorporate novel structures and functionality into electronic and optoelectronic devices. A clear understanding of the nanowire growth mechanism is essential for well-controlled growth of structures with desired properties, but the understanding is currently limited by a lack of empirical measurements of important parameters during growth, such as catalyst particle composition. However, this is difficult to accurately determine by investigating post-growth. We report direct in situ measurement of the catalyst composition during nanowire growth for the first time. We study Au-seeded GaAs nanowires inside an electron microscope as they grow and measure the catalyst composition using X-ray energy dispersive spectroscopy. The Ga content in the catalyst during growth increases with both temperature and Ga precursor flux.

Department/s

  • Solid State Physics
  • NanoLund
  • Centre for Analysis and Synthesis

Publishing year

2019-10-08

Language

English

Publication/Series

Nature Communications

Volume

10

Issue

1

Document type

Journal article

Publisher

Nature Publishing Group

Topic

  • Condensed Matter Physics
  • Nano Technology

Status

Published

ISBN/ISSN/Other

  • ISSN: 2041-1723