Abstract
Non-metallic particles and the metallic impurity elements in the solar cell silicon have a strong detrimental effect on the conversion efficiency of the solar cell. Removing these impurities is one of the important tasks for silicon refining. the current paper proposed a new approach to purify silicon - electromagnetic (EM) separation. Since the non-metallic particles and the metallic impurity elements are non- or less conductive while the molten silicon is well conductive, under EM field, the Lorenz force will push the particles to the boundary layer, thus separate these inclusions. in the current study, a high frequency EM field was imposed on the silicon melt in laboratory scale experiments with a frequency of 60 kHz and 15.0 a current, the non-conductive SiC particles were successfully pushed to the boundary layer close to the crucible wall. © 2010 IEEE.
Recommended Citation
A. Dong et al., "Purification of Solar Grade Silicon using Electromagnetic Field," Conference Record of the IEEE Photovoltaic Specialists Conference, pp. 2266 - 2269, article no. 5617131, Institute of Electrical and Electronics Engineers, Dec 2010.
The definitive version is available at https://doi.org/10.1109/PVSC.2010.5617131
Department(s)
Materials Science and Engineering
International Standard Book Number (ISBN)
978-142445891-2
International Standard Serial Number (ISSN)
0160-8371
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
21 Dec 2010
