Simultaneous Growth of Pure Wurtzite and Zinc Blende Nanowires

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

The opportunity to engineer III-V nanowires in wurtzite and zinc blende crystal structure allows for exploring properties not conventionally available in the bulk form as well as opening the opportunity for use of additional degrees of freedom in device fabrication. However, the fundamental understanding of the nature of polytypism in III-V nanowire growth is still lacking key ingredients to be able to connect the results of modeling and experiments. Here we show InP nanowires of both pure wurtzite and pure zinc blende grown simultaneously on the same InP [100]-oriented substrate. We find wurtzite nanowires to grow along «111»B and zinc blende counterparts along «111»A. Further, we discuss the nucleation, growth, and polytypism of our nanowires against the background of existing theory. Our results demonstrate, first, that the crystal growth conditions for wurtzite and zinc blende nanowire growth are not mutually exclusive and, second, that the interface energies predominantly determine the crystal structure of the nanowires.

Detaljer

Författare
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Nanoteknik
  • Den kondenserade materiens fysik

Nyckelord

Originalspråkengelska
Sidor (från-till)2723-2730
Antal sidor8
TidskriftNano Letters
Volym19
Utgivningsnummer4
StatusPublished - 2019
PublikationskategoriForskning
Peer review utfördJa