Synthesis of silicon nanowires using tin catalyst by hot wire chemical vapor processing
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology, Bombay, Mumbai 400 076 (India)
Highlights: ► Silicon nanowires are grown by hot wire chemical vapor processing at 400 °C using Sn as catalyst material via VLS. ► For nanowire synthesis Sn nanotemplates are formed with hot wire generated atomic hydrogen. ► The TEM image reveals the crystalline nature of nanowire. - Abstract: Silicon nanowires (SiNWs) have been synthesized at temperatures in the range 300–400 °C by the hot wire chemical vapor processing (HWCVP) using tin nanotemplate. The tin nano-template is formed by hot wire atomic hydrogen treatment of thermally evaporated Sn films (∼300 nm thick) on glass substrates. Silicon nanowires are then grown using hot wire induced dissociation of SiH{sub 4} gas over the nanotemplate. Growth conditions like growth time and temperature were varied to study their effect on the tin nanoparticle size and on the silicon nanowire dimensions thereafter. From the observations, it is clear that the nanowire diameters and lengths depend on the size of nanoparticles and the growth time respectively. Though SiNWs were observed to grow at temperatures as low as 300 °C, nanowires with a narrow diameter distribution were achieved at 400 °C. Raman spectra and transmission electron microscope (TEM) reveal the crystalline nature of the silicon nanowires.
- OSTI ID:
- 22341694
- Journal Information:
- Materials Research Bulletin, Vol. 48, Issue 6; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
Similar Records
Alumina nanowire growth by water decomposition and the peritectic reaction of decagonal Al{sub 65}Cu{sub 15}Co{sub 20} quasicrystals
Structural and electrical properties of trimethylboron-doped silicon nanowires