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Silver as Seed-Particle Material for GaAs Nanowires - Dictating Crystal Phase and Growth Direction by Substrate Orientation

In English

Författare

  • Caroline Lindberg
  • Alexander Whiticar
  • Kimberly A. Dick
  • Niklas Sköld
  • Jesper Nygård
  • Jessica Bolinsson

Summary, in English

Here we investigate the feasibility of silver as seed-particle material to synthesize GaAs nanowires and show that both crystal phase and growth direction can be controlled by choice of substrate orientation. A (111)B substrate orientation can be used to form vertically aligned wurtzite GaAs nanowires and a (100) substrate orientation to form vertically aligned zinc blende GaAs nanowires. A 45-50% yield of vertical nanowire growth is achieved on the (100) substrate orientation without employing any type of surface modification or nucleation strategy to promote a vertical growth direction. In addition, photoluminescence measurements reveal that the photon emission from the silver seeded wurtzite GaAs nanowires is characterized by a single and narrow emission peak at 1.52 eV.

Publiceringsår

2016-04-13

Språk

Engelska

Sidor

2181-2188

Publikation/Tidskrift/Serie

Nano Letters

Volym

16

Issue

4

Dokumenttyp

Artikel i tidskrift

Förlag

The American Chemical Society (ACS)

Ämne

  • Nano Technology
  • Condensed Matter Physics

Nyckelord

  • GaAs
  • growth direction
  • III-V semiconductors
  • nanowire
  • photoluminescence
  • silver catalyst

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1530-6984