Synthesis of indium-catalyzed Si nanowires by hot-wire chemical vapor deposition

Chong, S.K. and Goh, B.T. and Aspanut, Z. and Muhamad, M.R. and Dee, C.F. and Rahman, S.A. (2011) Synthesis of indium-catalyzed Si nanowires by hot-wire chemical vapor deposition. Materials Letters, 65 (15-16). pp. 2452-2454. ISSN 0167-577X, DOI

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Indium (In) catalyzed silicon nanowires (SiNWs) were synthesized by using hot-wire chemical vapor deposition (HWCVD) technique. Indium droplets were deposited on Si substrates by hot-wire evaporation of In wire, which was immediately followed by the growth of SiNWs from the droplets. Three sets of samples were prepared by varying the length of In wires, l, as 3, 1 and 0.5 mm. The sizes of In catalyst droplets decreased from 271.4 +/- 66.8 to 67.4 +/- 16.6 nm when the l was reduced from 3 to 0.5 mm. Larger size of In droplets (271.4 +/- 66.8 nm) was found to induce the growth of worm-like NWs. The decrease in size of In catalyst droplets induced the formation of aligned and tapered NWs with smaller tips. The smallest value of tapering parameter, T-p of 40.5 nm/mu m is correlated to the SiNWs induced by the smallest size of In droplets (67.4 +/- 16.6 nm). The as-grown SiNWs showed high purity and good crystalline structure. (C) 2011 Elsevier B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Silicon nanowires Indium Chemical vapor deposition Hot-wire Crystal structure silicon nanowires growth kinetics
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Department of Physics
Depositing User: miss munirah saadom
Date Deposited: 16 Jul 2013 01:32
Last Modified: 11 Dec 2013 04:00

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