Thabethe, SibongiseniLinganiso, EllaMotaung, DavidMashapa, Matete G.Nkosi, StevenArendse, ChristopherMwakikung, Bonex W.2018-03-052018-03-052013Thabethe, S. et al. (2013). Visible and IR photoluminescence of c-FeSi@a-Si core-shell nanofibres produced by vapour transport. Journal of luminescence, 143: 113 – 119.0022-2313http://dx.doi.org/10.1016/j.jlumin.2013.04.020http://hdl.handle.net/10566/3565The procedures for the synthesis of amorphous ε-FeSi/Sicore–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 8.0nm which agrees with TEM value of 7.9nm 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 410nm,1062nm,1414nm and 1772nm and absorption feature at 1000cm−1 from FTIR are explained from density functional theory(DFT) abinitio calculations. PL confirms the intra-band transition whereas FTIR agrees perfectly with the band-to-band transition whose band gap energy is 0.13eV for FeSi. FTIR also unveils inter-bandtransition which DFT calculation could not predict. Raman spectroscopy data confirm FeSi and nano-Sipresence.enThis is the author-version of the article published online at: http://dx.doi.org/10.1016/j.jlumin.2013.04.020PhotoluminescenceFeSiIron monosilicideBand structureDOSDFTArticle