Solid-state limited nucleation of NiSi/SiC core-shell nanowires by hot-wire chemical vapor deposition

Mahdi Alizadeh, Najwa Binti Hamzan, Poh Choon Ooi, Muhammad Firdaus bin Omar, Chang Fu Dee, Boon Tong Goh

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This work demonstrated a growth of well-aligned NiSi/SiC core-shell nanowires by a one-step process of hot-wire chemical vapor deposition on Ni-coated crystal silicon substrates at different thicknesses. The NiSi nanoparticles (60 to 207 nm) acted as nano-templates to initially inducing the growth of these core-shell nanowires. These core-shell nanowires were structured by single crystalline NiSi and amorphous SiC as the cores and shells of the nanowires, respectively. It is proposed that the precipitation of the NiSi/SiC are followed according to the nucleation limited silicide reaction and the surface-migration respectively for these core-shell nanowires. The electrical performance of the grown NiSi/SiC core-shell nanowires was characterized by the conducting AFM and it is found that the measured conductivities of the nanowires were higher than the reported works that might be enhanced by SiC shell layer on NiSi nanowires. The high conductivity of NiSi/SiC core-shell nanowires could potentially improve the electrical performance of the nanowires-based devices for harsh environment applications such as field effect transistors, field emitters, space sensors, and electrochemical devices.

Original languageEnglish
Article number674
JournalMaterials
Volume12
Issue number4
DOIs
Publication statusPublished - 24 Feb 2019

Fingerprint

Cable cores
Nanowires
Chemical vapor deposition
Nucleation
Wire
Silicon
Field effect transistors
Nanoparticles
Crystalline materials

Keywords

  • Core-shell nanowires
  • Hot-wire chemical vapor deposition (HWCVD)
  • NiSi
  • Nucleation limited silicide reaction
  • SiC
  • Surface-migration

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Solid-state limited nucleation of NiSi/SiC core-shell nanowires by hot-wire chemical vapor deposition. / Alizadeh, Mahdi; Hamzan, Najwa Binti; Ooi, Poh Choon; Omar, Muhammad Firdaus bin; Dee, Chang Fu; Goh, Boon Tong.

In: Materials, Vol. 12, No. 4, 674, 24.02.2019.

Research output: Contribution to journalArticle

Alizadeh, Mahdi ; Hamzan, Najwa Binti ; Ooi, Poh Choon ; Omar, Muhammad Firdaus bin ; Dee, Chang Fu ; Goh, Boon Tong. / Solid-state limited nucleation of NiSi/SiC core-shell nanowires by hot-wire chemical vapor deposition. In: Materials. 2019 ; Vol. 12, No. 4.
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