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

8 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

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Phase control
Nanowires
Heterojunctions
Crystals
Zinc
Crystal structure
Shells (structures)
Fluxes
gallium arsenide
Supersaturation
Aberrations
Electron microscopy
Tuning
Catalysts

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

Cite this

Crystal-phase control of GaAs-GaAsSb core-shell/axial nanowire heterostructures by a two-step growth method. / Zhou, Chen; Zheng, Kun; Chen, Ping Ping; Matsumura, Syo; Lu, Wei; Zou, Jin.

In: Journal of Materials Chemistry C, Vol. 6, No. 25, 01.01.2018, p. 6726-6732.

Research output: Contribution to journalArticle

Zhou, Chen ; Zheng, Kun ; Chen, Ping Ping ; Matsumura, Syo ; Lu, Wei ; Zou, Jin. / Crystal-phase control of GaAs-GaAsSb core-shell/axial nanowire heterostructures by a two-step growth method. In: Journal of Materials Chemistry C. 2018 ; Vol. 6, No. 25. pp. 6726-6732.
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