Abstract
Core–shell silicon nanowires (Si-NWs) were synthesized by chemical vapor deposition (CVD) using SiH4 and H2 as precursors. The electron microscopy results revealed that the core shell Si-NW consists of core Si surrounded by thick amorphous silicon oxide (a-SiOx). The diameter of core Si in a core–shell Si-NW was controlled by varying the oxygen flow rate and annealing time. The morphology of core shell Si-NWs is changed to silicon nanocoils (Si-NCs)/silicon nanonoodles (Si-NNs) after being annealed in oxygen atmosphere. The Fourier transform infrared spectroscopy (FTIR) study confirmed the changes of Si–Si and Si–O–Si vibration band and the intensity of Si–O–Si vibration mode increases with decreasing diameter of Si-NWs. The optical properties of core–shell Si-NWs are improved after being annealed in oxygen atmosphere. The chemical bonding and photoluminescence properties of oxygen annealed Si-NWs are also discussed in this article.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
