Scriba, Manfred RBritton, DTArendse, Cvan Staden, MJHärting, M2012-04-112012-04-112009-04Scriba, MR, Britton, DT, Arendse, C, Van Staden, MJ and Härting, M. 2009. Composition and crystallinity of silicon nanoparticles synthesised by hot wire thermal catalytic pyrolysis at different pressures. Thin Solid Films, vol. 517(12), pp 3484-34870040-6090http://www.sciencedirect.com/science/article/pii/S0040609009001047http://hdl.handle.net/10204/5728Copyright: 2009 Elsevier. This is an ABSTRACT ONLY.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 X-ray 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.enThermal catalytic pyrolysisSilicon nanoparticlesX-ray diffractionX-ray photoelectron spectroscopyRaman spectroscopyTransmission electron microscopyArticleScriba, M. R., Britton, D., Arendse, C., van Staden, M., & Härting, M. (2009). Composition and crystallinity of silicon nanoparticles synthesised by hot wire thermal catalytic pyrolysis at different pressures. http://hdl.handle.net/10204/5728Scriba, Manfred R, DT Britton, C Arendse, MJ van Staden, and M Härting "Composition and crystallinity of silicon nanoparticles synthesised by hot wire thermal catalytic pyrolysis at different pressures." (2009) http://hdl.handle.net/10204/5728Scriba MR, Britton D, Arendse C, van Staden M, Härting M. Composition and crystallinity of silicon nanoparticles synthesised by hot wire thermal catalytic pyrolysis at different pressures. 2009; http://hdl.handle.net/10204/5728.TY - Article AU - Scriba, Manfred R AU - Britton, DT AU - Arendse, C AU - van Staden, MJ 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 X-ray 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 - 2009-04 DB - ResearchSpace DP - CSIR KW - Thermal catalytic pyrolysis KW - Silicon nanoparticles KW - X-ray diffraction KW - X-ray photoelectron spectroscopy KW - Raman spectroscopy KW - Transmission electron microscopy LK - https://researchspace.csir.co.za 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/10204/5728 ER -