Crystal-phase control of GaAs-GaAsSb core-shell/axial nanowire heterostructures by a two-step growth method

Chen Zhou, Kun Zheng, Ping Ping Chen, Syo Matsumura, Wei Lu, Jin Zou

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The growth of III-Sb nanowires with controlled wurtzite and zinc-blende structures is essential for tailoring their fundamental properties and in turn potential applications. However, most studies of III-Sb nanowires have shown that they adopt the zinc-blende structure, so that the growth of wurtzite structured III-Sb nanowires needs to be explored. In this study, both wurtzite and zinc-blende structured GaAs-GaAsSb core-shell nanowire heterostructures and axial heterostructures were grown by tuning the crystal structure of nanowire cores and varying the Sb flux. Our aberration-corrected electron microscopy investigations suggest that the nanowire shells maintained the same crystal structure as their nanowire cores. Besides, it was found that the axial-lateral GaAs-GaAaSb heterostructures were grown with increasing the Sb flux, due to the increased Sb supersaturation at the catalyst-nanowire interface. This study provides an avenue for growing III-Sb nanowires with desired crystal structures in order to secure different properties.

Original languageEnglish
Pages (from-to)6726-6732
Number of pages7
JournalJournal of Materials Chemistry C
Volume6
Issue number25
DOIs
Publication statusPublished - Jan 1 2018

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Crystal-phase control of GaAs-GaAsSb core-shell/axial nanowire heterostructures by a two-step growth method'. Together they form a unique fingerprint.

  • Cite this