Thermodynamics of Phosphorus Removal from Silicon in Solvent Refining of Silicon
Refining of silicon for solar applications using metallurgical approaches has attracted a considerable attention in the recent years. The present study involves employing solvent refining as a purification technique in which silicon recrystallization takes place from an iron-silicon alloy melt. It i...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2012-10-01
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| Series: | High Temperature Materials and Processes |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/htmp-2012-0100 |
| _version_ | 1831769209326010368 |
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| author | Khajavi Leili Tafaghodi Barati Mansoor |
| author_facet | Khajavi Leili Tafaghodi Barati Mansoor |
| author_sort | Khajavi Leili Tafaghodi |
| collection | DOAJ |
| description | Refining of silicon for solar applications using metallurgical approaches has attracted a considerable attention in the recent years. The present study involves employing solvent refining as a purification technique in which silicon recrystallization takes place from an iron-silicon alloy melt. It is believed that iron will perform as the impurity “getter” and purified silicon crystals grow from the alloy melt, while the impurities are segregated to the liquid alloy. The focus of this article is on removal of phosphorus, as a critical impurity in solar silicon. In order to assess the feasibility and efficiency of phosphorus removal through solvent refining, the distribution of phosphorus between solid Si and Fe-Si melt at 1483–1583 K (1210–1310 °C) was measured. Interaction parameter between phosphorus and iron was calculated by varying the concentration of phosphorus at each temperature. |
| first_indexed | 2024-12-22T07:16:16Z |
| format | Article |
| id | doaj.art-3c2319c29bdf4addb3cf827bc155612e |
| institution | Directory Open Access Journal |
| issn | 0334-6455 2191-0324 |
| language | English |
| last_indexed | 2024-12-22T07:16:16Z |
| publishDate | 2012-10-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | High Temperature Materials and Processes |
| spelling | doaj.art-3c2319c29bdf4addb3cf827bc155612e2022-12-21T18:34:23ZengDe GruyterHigh Temperature Materials and Processes0334-64552191-03242012-10-01314-562763110.1515/htmp-2012-0100Thermodynamics of Phosphorus Removal from Silicon in Solvent Refining of SiliconKhajavi Leili TafaghodiBarati Mansoor0University of Toronto, Department of Materials Science and Engineering, 184 College Street, Suite 140; Toronto, Ontario M5S 3E4, CanadaRefining of silicon for solar applications using metallurgical approaches has attracted a considerable attention in the recent years. The present study involves employing solvent refining as a purification technique in which silicon recrystallization takes place from an iron-silicon alloy melt. It is believed that iron will perform as the impurity “getter” and purified silicon crystals grow from the alloy melt, while the impurities are segregated to the liquid alloy. The focus of this article is on removal of phosphorus, as a critical impurity in solar silicon. In order to assess the feasibility and efficiency of phosphorus removal through solvent refining, the distribution of phosphorus between solid Si and Fe-Si melt at 1483–1583 K (1210–1310 °C) was measured. Interaction parameter between phosphorus and iron was calculated by varying the concentration of phosphorus at each temperature.https://doi.org/10.1515/htmp-2012-0100siliconthermodynamicssolvent refiningimpurity |
| spellingShingle | Khajavi Leili Tafaghodi Barati Mansoor Thermodynamics of Phosphorus Removal from Silicon in Solvent Refining of Silicon High Temperature Materials and Processes silicon thermodynamics solvent refining impurity |
| title | Thermodynamics of Phosphorus Removal from Silicon in Solvent Refining of Silicon |
| title_full | Thermodynamics of Phosphorus Removal from Silicon in Solvent Refining of Silicon |
| title_fullStr | Thermodynamics of Phosphorus Removal from Silicon in Solvent Refining of Silicon |
| title_full_unstemmed | Thermodynamics of Phosphorus Removal from Silicon in Solvent Refining of Silicon |
| title_short | Thermodynamics of Phosphorus Removal from Silicon in Solvent Refining of Silicon |
| title_sort | thermodynamics of phosphorus removal from silicon in solvent refining of silicon |
| topic | silicon thermodynamics solvent refining impurity |
| url | https://doi.org/10.1515/htmp-2012-0100 |
| work_keys_str_mv | AT khajavileilitafaghodi thermodynamicsofphosphorusremovalfromsiliconinsolventrefiningofsilicon AT baratimansoor thermodynamicsofphosphorusremovalfromsiliconinsolventrefiningofsilicon |