2014年2月
Processes for production of solar-grade silicon using hydrogen reduction and/or thermal decomposition
Energy Technology
- ,
- ,
- 巻
- 2
- 号
- 2
- 開始ページ
- 141
- 終了ページ
- 154
- 記述言語
- 掲載種別
- 書評論文,書評,文献紹介等
- DOI
- 10.1002/ente.201300131
© 2014 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. High-purity Si used for photovoltaic applications, namely, solar-grade Si (SOG-Si), is commercially manufactured using the Siemens process. Although the present levels of supply satisfy the demand, there can potentially be a shortage of SOG-Si in the long term. To overcome the low productivity of the Siemens process, various types of SOG-Si production/ purification processes have been developed as post-Siemens processes. Some processes are under development as new commercial processes. These processes can be classified into the following three categories: (1) hydrogen reduction and/or thermal decomposition of silane-based gases in improved Siemens-based processes, (2) metallothermic reduction of silicon halides by Zn or Al, and (3) upgrading metallurgicalgrade Si by employing metallurgical purification methods. This paper presents a review of various types of SOG-Si production processes, particularly those based on the hydrogen reduction and/or thermal decomposition of halides and silane-based gases. These processes are classified on the basis of Si compounds used and the reaction types; further, the features of these processes are also analyzed. Future prospects for the development of new high-purity Si production process are also presented.
- リンク情報
- ID情報
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- DOI : 10.1002/ente.201300131
- ISSN : 2194-4288
- eISSN : 2194-4296
- SCOPUS ID : 84904809389