Studies on growth, structural and photoluminescense properties of nisi/sic core-shell nanowires by hwcvd / Nur Fatin Farhanah Binti Nazarudin

Nazarudin, Nur Fatin Farhanah (2014) Studies on growth, structural and photoluminescense properties of nisi/sic core-shell nanowires by hwcvd / Nur Fatin Farhanah Binti Nazarudin. Masters thesis, University of Malaya.

[img]
Preview
PDF
Download (4Kb) | Preview
    [img]
    Preview
    PDF
    Download (4Kb) | Preview
      [img]
      Preview
      PDF
      Download (199Kb) | Preview
        [img]
        Preview
        PDF (Full Text)
        Download (1844Kb) | Preview

          Abstract

          NiSi/SiC core-shell nanorods and nanowires grown on nickel (Ni) coated glass substrates by hot-wire chemical vapour deposition were studied. The Ni was used as a catalyst to induce the growth of these core-shell nanorods and nanowires. These nanorods and nanowires were growth at different deposition pressures in the range between 1 and 3 mbar. Increase in deposition pressure prefers to the growth of the nanowires at 3 mbar. These nanowires consisted of single crystalline NiSi and amorphous SiC attributed to core and shell of the nanowires respectively. Moreover, an increase in deposition pressure induces a phase transition of the nanowires from crystalline Si phase to amorphous SiC phase. The shell of the nanowires showed presence of 3C-SiC nano-crystallites embedded within an amorphous matrix. Presence of these nano-crystallites embedded within the amorphous SiC matrix exhibits broad PL emission spectra in visible region. The effects of the deposition pressure on the growth and structural properties of these core-shell nanowires are discussed. Keywords: Core-shell nanowires; Nickel silicides; SiC; Metal induced growth; HWCVD

          Item Type: Thesis (Masters)
          Additional Information: Dissertation (M.A.) - Department of Physics, Faculty of Science, University of Malaya, 2014.
          Uncontrolled Keywords: Photoluminescense properties of nisi
          Subjects: Q Science > Q Science (General)
          Divisions: Faculty of Science
          Depositing User: Mrs Nur Aqilah Paing
          Date Deposited: 04 Mar 2015 09:54
          Last Modified: 04 Mar 2015 09:54
          URI: http://studentsrepo.um.edu.my/id/eprint/4797

          Actions (For repository staff only : Login required)

          View Item