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Visible and IR photoluminescence of c-FeSi@a-Si core-shell nano-fibres produced by vapour transport

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dc.contributor.author Thabethe, S
dc.contributor.author Linganiso, E
dc.contributor.author Motaung, D
dc.contributor.author Mashapa, MG
dc.contributor.author Nkosi, S
dc.contributor.author Arendse, CJ
dc.contributor.author Mwakikunga, Bonex W
dc.date.accessioned 2014-01-13T07:14:00Z
dc.date.available 2014-01-13T07:14:00Z
dc.date.issued 2013-11
dc.identifier.citation Thabethe, S, Linganiso, E, Motaung, D, Mashapa, M.G, Nkosi, S, Arendse, C.J Mwakikunga, B.W. 2013. Visible and IR photoluminescence of c-FeSi@a-Si core-shell nano-fibres produced by vapour transport. Journal of Luminescence, vol. 143, pp 113-119 en_US
dc.identifier.issn 0022-2313
dc.identifier.uri http://hdl.handle.net/10204/7132
dc.identifier.uri https://www.sciencedirect.com/science/article/pii/S0022231313002317
dc.identifier.uri https://doi.org/10.1016/j.jlumin.2013.04.020
dc.description Copyright: 2013 Elsevier. This is an ABSTRACT ONLY. The definitive version is published in Journal of Luminescence, vol. 143, pp 113-119 en_US
dc.description.abstract The procedures for the synthesis of amorphous e-FeSi/Si core–shell nanofibres by vapour transport in a CVD configuration are reported. Crystallite studies by the Williamson-Hall method show the sizes to be typically about 8.0 nm which agrees with TEM value of 7.9 nm fibre diameter with a compressive strain of about 0.04. Features in the photoluminescence of these FeSi core–shells in both visible and IR are at 410 nm, 1062 nm, 1414 nm and 1772 nm and absorption feature at 1000 cm(sup-1) from FTIR are explained from density functional theory (DFT) ab initio calculations. PL confirms the intra-band transition whereas FTIR agrees perfectly with the band-to-band transition whose band gap energy is 0.13 eV for FeSi. FTIR also unveils inter-band transition which DFT calculation could not predict. Raman spectroscopy data confirm FeSi and nano-Si presence. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Workflow;11862
dc.subject Photoluminescence en_US
dc.subject FeSi en_US
dc.subject Iron monosilicide en_US
dc.subject Band structure en_US
dc.title Visible and IR photoluminescence of c-FeSi@a-Si core-shell nano-fibres produced by vapour transport en_US
dc.type Article en_US
dc.identifier.apacitation Thabethe, S., Linganiso, E., Motaung, D., Mashapa, M., Nkosi, S., Arendse, C., & Mwakikunga, B. W. (2013). Visible and IR photoluminescence of c-FeSi@a-Si core-shell nano-fibres produced by vapour transport. http://hdl.handle.net/10204/7132 en_ZA
dc.identifier.chicagocitation Thabethe, S, E Linganiso, D Motaung, MG Mashapa, S Nkosi, CJ Arendse, and Bonex W Mwakikunga "Visible and IR photoluminescence of c-FeSi@a-Si core-shell nano-fibres produced by vapour transport." (2013) http://hdl.handle.net/10204/7132 en_ZA
dc.identifier.vancouvercitation Thabethe S, Linganiso E, Motaung D, Mashapa M, Nkosi S, Arendse C, et al. Visible and IR photoluminescence of c-FeSi@a-Si core-shell nano-fibres produced by vapour transport. 2013; http://hdl.handle.net/10204/7132. en_ZA
dc.identifier.ris TY - Article AU - Thabethe, S AU - Linganiso, E AU - Motaung, D AU - Mashapa, MG AU - Nkosi, S AU - Arendse, CJ AU - Mwakikunga, Bonex W AB - The procedures for the synthesis of amorphous e-FeSi/Si core–shell nanofibres by vapour transport in a CVD configuration are reported. Crystallite studies by the Williamson-Hall method show the sizes to be typically about 8.0 nm which agrees with TEM value of 7.9 nm fibre diameter with a compressive strain of about 0.04. Features in the photoluminescence of these FeSi core–shells in both visible and IR are at 410 nm, 1062 nm, 1414 nm and 1772 nm and absorption feature at 1000 cm(sup-1) from FTIR are explained from density functional theory (DFT) ab initio calculations. PL confirms the intra-band transition whereas FTIR agrees perfectly with the band-to-band transition whose band gap energy is 0.13 eV for FeSi. FTIR also unveils inter-band transition which DFT calculation could not predict. Raman spectroscopy data confirm FeSi and nano-Si presence. DA - 2013-11 DB - ResearchSpace DP - CSIR KW - Photoluminescence KW - FeSi KW - Iron monosilicide KW - Band structure LK - https://researchspace.csir.co.za PY - 2013 SM - 0022-2313 T1 - Visible and IR photoluminescence of c-FeSi@a-Si core-shell nano-fibres produced by vapour transport TI - Visible and IR photoluminescence of c-FeSi@a-Si core-shell nano-fibres produced by vapour transport UR - http://hdl.handle.net/10204/7132 ER - en_ZA


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