Improvement in refinement of metallurgical-grade silicon by calcium addition in fractional melting process

Jaewoo Lee; Changbum Lee; Hee Eun Song; Bo Yun Jang; Wooyoung Yoon

doi:10.1166/nnl.2016.2120

Improvement in refinement of metallurgical-grade silicon by calcium addition in fractional melting process

Jaewoo Lee, Changbum Lee, Hee Eun Song, Bo Yun Jang, Wooyoung Yoon

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

A new method was developed in this study to remove the liquid from a solid/liquid mixture in an induction heating applied system under the influence of centrifugal force. To segregate impurities and improve the refining ratio, calcium was added to the metallurgical-grade silicon. The behavior of impurities and the refining ratio were studied by scanning electron microscopy, electron probe microanalysis, and inductively coupled plasma mass spectroscopy. The impurities in Si were structurally arranged together and formed networks, which facilitated their removal during fractional melting. The refining ratio improved after the addition of Ca. Despite their high segregation coefficients, the concentrations of boron and phosphorus also reduced.

Original language	English
Pages (from-to)	52-56
Number of pages	5
Journal	Nanoscience and Nanotechnology Letters
Volume	8
Issue number	1
DOIs	https://doi.org/10.1166/nnl.2016.2120
Publication status	Published - 2016 Jan

Keywords

Alloys
Fractional Melting
MG Silicon
Purification
Solar Cells

ASJC Scopus subject areas

Materials Science(all)

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10.1166/nnl.2016.2120

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title = "Improvement in refinement of metallurgical-grade silicon by calcium addition in fractional melting process",

abstract = "A new method was developed in this study to remove the liquid from a solid/liquid mixture in an induction heating applied system under the influence of centrifugal force. To segregate impurities and improve the refining ratio, calcium was added to the metallurgical-grade silicon. The behavior of impurities and the refining ratio were studied by scanning electron microscopy, electron probe microanalysis, and inductively coupled plasma mass spectroscopy. The impurities in Si were structurally arranged together and formed networks, which facilitated their removal during fractional melting. The refining ratio improved after the addition of Ca. Despite their high segregation coefficients, the concentrations of boron and phosphorus also reduced.",

keywords = "Alloys, Fractional Melting, MG Silicon, Purification, Solar Cells",

author = "Jaewoo Lee and Changbum Lee and Song, {Hee Eun} and Jang, {Bo Yun} and Wooyoung Yoon",

note = "Funding Information: Acknowledgment: It was supported by a Korea University Grant. This work was supported by the International Collaborative Energy Technology R&D Program of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry and Energy, Republic of Korea. (No. 20148520120040). This work was conducted under the framework of the Research and Development Program of the Korea Institute of Energy Research (KIER) (B6-2426). Publisher Copyright: Copyright {\textcopyright} 2016 American Scientific Publishers.",

year = "2016",

month = jan,

doi = "10.1166/nnl.2016.2120",

language = "English",

volume = "8",

pages = "52--56",

journal = "Nanoscience and Nanotechnology Letters",

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AU - Lee, Changbum

AU - Song, Hee Eun

AU - Jang, Bo Yun

AU - Yoon, Wooyoung

N1 - Funding Information: Acknowledgment: It was supported by a Korea University Grant. This work was supported by the International Collaborative Energy Technology R&D Program of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry and Energy, Republic of Korea. (No. 20148520120040). This work was conducted under the framework of the Research and Development Program of the Korea Institute of Energy Research (KIER) (B6-2426). Publisher Copyright: Copyright © 2016 American Scientific Publishers.

PY - 2016/1

Y1 - 2016/1

N2 - A new method was developed in this study to remove the liquid from a solid/liquid mixture in an induction heating applied system under the influence of centrifugal force. To segregate impurities and improve the refining ratio, calcium was added to the metallurgical-grade silicon. The behavior of impurities and the refining ratio were studied by scanning electron microscopy, electron probe microanalysis, and inductively coupled plasma mass spectroscopy. The impurities in Si were structurally arranged together and formed networks, which facilitated their removal during fractional melting. The refining ratio improved after the addition of Ca. Despite their high segregation coefficients, the concentrations of boron and phosphorus also reduced.

AB - A new method was developed in this study to remove the liquid from a solid/liquid mixture in an induction heating applied system under the influence of centrifugal force. To segregate impurities and improve the refining ratio, calcium was added to the metallurgical-grade silicon. The behavior of impurities and the refining ratio were studied by scanning electron microscopy, electron probe microanalysis, and inductively coupled plasma mass spectroscopy. The impurities in Si were structurally arranged together and formed networks, which facilitated their removal during fractional melting. The refining ratio improved after the addition of Ca. Despite their high segregation coefficients, the concentrations of boron and phosphorus also reduced.

KW - Alloys

KW - Fractional Melting

KW - MG Silicon

KW - Purification

KW - Solar Cells

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SP - 52

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JO - Nanoscience and Nanotechnology Letters

JF - Nanoscience and Nanotechnology Letters

IS - 1

ER -

Improvement in refinement of metallurgical-grade silicon by calcium addition in fractional melting process

Abstract

Keywords

ASJC Scopus subject areas

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