Composition and crystallinity of silicon nanoparticles synthesised by hot wire thermal catalytic pyrolysis at different pressures

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dc.contributor.authorScriba, M R
dc.contributor.authorBritton, D T
dc.contributor.authorArendse, C
dc.contributor.authorvan Staden, M J
dc.contributor.authorHärting, M
dc.date.accessioned2016-07-27T11:30:20Z
dc.date.available2016-07-27T11:30:20Z
dc.date.issued2009
dc.date.updated2016-07-12T17:15:53Z
dc.description.abstractThe effect of pressure on the structure and composition of silicon nanoparticles synthesized by hot wire thermal catalytic pyrolysis (HW-TCP) of pure silane has been investigated. Light brown powders were produced at silane pressures of 10 and 50 mbar, at a flow rate of 50 sccm, using a tungsten filament at temperatures of 1900 °C and 1800 °C respectively. As determined by transmission electron microscopy and Xray diffraction, the particles produced at lower pressure have sizes around 10 nm, whereas those produced at higher pressure are typically 50 nm. High resolution transmission electron microscopy (HR-TEM) shows a surface layer of between 2 and 5 nm thickness, which was confirmed by X-ray photoemission spectroscopy to be an oxide shell. Both X-ray diffraction and HR-TEM confirm a high degree of crystallinity in both sets of particles, with Raman spectroscopy indicating an increase in crystalline fraction with synthesis pressure.en_ZA
dc.identifierhttp://dx.doi.org/10.1016/j.tsf.2009.01.047
dc.identifier.apacitationScriba, M. R., Britton, D. T., Arendse, C., van Staden, M. J., & Härting, M. (2009). Composition and crystallinity of silicon nanoparticles synthesised by hot wire thermal catalytic pyrolysis at different pressures. <i>Thin Solid Films</i>, http://hdl.handle.net/11427/20880en_ZA
dc.identifier.chicagocitationScriba, M R, D T Britton, C Arendse, M J van Staden, and M Härting "Composition and crystallinity of silicon nanoparticles synthesised by hot wire thermal catalytic pyrolysis at different pressures." <i>Thin Solid Films</i> (2009) http://hdl.handle.net/11427/20880en_ZA
dc.identifier.citationScriba, M. R., Britton, D. T., Arendse, C., van Staden, M. J., & Härting, M. (2009). Composition and crystallinity of silicon nanoparticles synthesised by hot wire thermal catalytic pyrolysis at different pressures. Thin Solid Films, 517(12), 3484-3487.en_ZA
dc.identifier.issn0040-6090en_ZA
dc.identifier.ris TY - Journal Article AU - Scriba, M R AU - Britton, D T AU - Arendse, C AU - van Staden, M J AU - Härting, M AB - The effect of pressure on the structure and composition of silicon nanoparticles synthesized by hot wire thermal catalytic pyrolysis (HW-TCP) of pure silane has been investigated. Light brown powders were produced at silane pressures of 10 and 50 mbar, at a flow rate of 50 sccm, using a tungsten filament at temperatures of 1900 °C and 1800 °C respectively. As determined by transmission electron microscopy and Xray diffraction, the particles produced at lower pressure have sizes around 10 nm, whereas those produced at higher pressure are typically 50 nm. High resolution transmission electron microscopy (HR-TEM) shows a surface layer of between 2 and 5 nm thickness, which was confirmed by X-ray photoemission spectroscopy to be an oxide shell. Both X-ray diffraction and HR-TEM confirm a high degree of crystallinity in both sets of particles, with Raman spectroscopy indicating an increase in crystalline fraction with synthesis pressure. DA - 2009 DB - OpenUCT DP - University of Cape Town J1 - Thin Solid Films LK - https://open.uct.ac.za PB - University of Cape Town PY - 2009 SM - 0040-6090 T1 - Composition and crystallinity of silicon nanoparticles synthesised by hot wire thermal catalytic pyrolysis at different pressures TI - Composition and crystallinity of silicon nanoparticles synthesised by hot wire thermal catalytic pyrolysis at different pressures UR - http://hdl.handle.net/11427/20880 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/20880
dc.identifier.vancouvercitationScriba MR, Britton DT, Arendse C, van Staden MJ, Härting M. Composition and crystallinity of silicon nanoparticles synthesised by hot wire thermal catalytic pyrolysis at different pressures. Thin Solid Films. 2009; http://hdl.handle.net/11427/20880.en_ZA
dc.language.isoeng
dc.publisherElsevieren_ZA
dc.publisher.institutionUniversity of Cape Town
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en_ZA
dc.sourceThin Solid Filmsen_ZA
dc.source.urihttp://www.sciencedirect.com/science/journal/00406090
dc.subject.otherThermal catalytic pyrolysis Silicon nanoparticles X-ray diffraction X-ray photoelectron spectroscopy
dc.titleComposition and crystallinity of silicon nanoparticles synthesised by hot wire thermal catalytic pyrolysis at different pressuresen_ZA
dc.typeJournal Articleen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
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