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Experimental Study on the Interaction Between Al and P in Si Solution

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A Correction to this article was published on 16 March 2023

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Abstract

The effect of impurity interactions on impurity removal efficiency in metallurgical grade silicon (MG-Si) was studied and analyzed to provide a new idea for removing impurities from MG-Si. This paper provides theoretical support for the removal of nonmetallic impurity P during the metallurgical purification and preparation of crystalline silicon. The interaction between Al and P in liquid silicon were investigated by directional solidification. The effects of different pull-down speeds, refining temperatures, holding times and Al contents on the distributions Al and P were investigated. The experimental results of the directional solidification of the Si-P-Al ternary system showed that from the bottom to the top of the sample, the contents of Al and P gradually increased. This phenomenon verifies the accuracy of the activity interaction coefficient between Al and P in the Si-P-Al ternary system calculated by the model. The mutual attraction between Al and P was also confirmed.

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All data generated or analysed during this study are included in this published article.

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Acknowledgements

The authors wish to acknowledge the financial support on this research from the National Natural Science Foundation of China (22078140), the Talent Training Program of Yunnan of China (202005AC160041), the major R&D project of Yunnan of China (202002AB0800020102) and Key Science and Technology Specific Projects of Yunnan Province (202202AG050012).

Funding

The authors are grateful for financial support from the National Natural Science Foundation of China (22078140), the Talent Training Program of Yunnan of China (202005AC160041), the major R&D project of Yunnan of China (202002AB0800020102) and Key Science and Technology Specific Projects of Yunnan Province (202202AG050012).

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Authors and Affiliations

  1. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, 650093, Kunming, People’s Republic of China

    Linjun Han, Qian He, Jijun Wu & Wenhui Ma

  2. The National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, 650093, Kunming, People’s Republic of China

    Linjun Han, Qian He, Jijun Wu & Wenhui Ma

Authors
  1. Linjun Han
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  2. Qian He
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  3. Jijun Wu
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  4. Wenhui Ma
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Contributions

Linjun Han: Experiment development, Data Integration, Writing—original draft, Supervision. Qian He: Data curation, Formal analysis, Data supplement. Jijun Wu: Funding acquisition, Project administration. Wenhui Ma: Conceptualization, Provide ideas.

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Correspondence to Jijun Wu.

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Han, L., He, Q., Wu, J. et al. Experimental Study on the Interaction Between Al and P in Si Solution. Silicon 15, 2221–2230 (2023). https://doi.org/10.1007/s12633-022-02177-6

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  • DOI: https://doi.org/10.1007/s12633-022-02177-6

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