Temperature induced diameter variation of silicon nanowires via a liquid–solid phase transition in the Zn seed. Issue 93 (9th November 2021)

• Record Type: Journal Article
• Authors: Kilian, Seamus; Adegoke, Temilade Esther; Ahad, Syed Abdul; Geaney, Hugh; Kennedy, Tadhg; Ryan, Kevin M.
• Is Part Of: Chemical communications. Volume 57:Issue 93(2021)
• Page Start: 12504
• Page End: 12507
• Publication Date: 2021-11-09
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d1cc04427c
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A Zn catalyst was used to grow Si nanowires via reaction temperature determined VLS or VSS modes, yielding different nanowire diameters. Switching between VLS and VSS modes resulted in diameter changes along the axial length of individual nanowires. Abstract : Herein, we demonstrate the ability of Zn to catalyze the growth of Si nanowires via reaction temperature determined, vapour–liquid–solid (VLS) or vapour–solid–solid (VSS) growth mechanisms. This is the first reported use of a type B catalyst to grow Si nanowires via the VSS mechanism to our knowledge whereby the highly faceted Zn seeds resulted in an increased NW diameter. This was used to induce diameter variations along the axial length of individual nanowires by transitioning between VLS and VSS growth.