Abstract
A Si film was formed from SiO2 particles in CaCl2 molten salt by electrochemical reduction using liquid Al-Si alloys. The liquid Al-Si alloys, formed from electrochemically reduced Si and metallic Al during the electrochemical reduction of the SiO2 particles, not only promoted electrochemical reduction, but also induced Si thin film formation. The Si film growth was observed by optical imaging, while the morphology and composition of the films were characterized by scanning electron microscopy and X-ray diffraction analysis. A pulse reduction technique was introduced to promote SiO2 reduction. The effect of the on/off time ratio on the Si film formation was investigated, with efficient SiO2 reduction achieved via on/off time ratio optimization. At the optimized ratio, a 0.9-mm-thick Si film with a Si purity of 96 at% was obtained. This effective Si production system might contribute to the fabrication of low-cost solar cells and Si-related electronic devices that require Si films.
Published Version
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.
