NDLI: Low-cost solar-grade silicon: Purification and consolidation of silicon fines from wafering

Content Provider	IEEE Xplore Digital Library
Author	Moro, L. Xiaobing Xie Perez-Mariano, J. Kai Lau Dubois, L.H. Lochtenberg, B. Sanjurjo, A.
Copyright Year	2010
Description	Author affiliation: ATMI, Danbury, CT, USA (Dubois, L.H.; Lochtenberg, B.) \|\| SRI International, Menlo Park, CA, USA (Moro, L.; Xiaobing Xie; Perez-Mariano, J.; Kai Lau; Sanjurjo, A.)
Abstract	More than 90% of commercial solar cells are produced using mono- and poly-crystalline silicon, with estimated about 15,000 MT of silicon feedstock used in 2008. Future silicon use is estimated to grow proportionally with the solar industry (30%/y). Substantial amounts of highly refined polycrystalline silicon material are wasted in the final stages of producing ingots and in wafer slicing. Recycling of wasted silicon in the form of fines generated in deposition reactors and in slicing operation can lower the production cost of solar-grade silicon feedstock to less than $10/kg, and substantially shorten energy payback time. The SRI International developed technology is based on the prepurification and simultaneous melt-consolidation and further purification of silicon fines from wafering operations. The consolidated product in form of granules and ingots with a resistivity range of 1 to 5 Ω·cm can be used in the melt growth of both single-crystal and polysilicon ingots for use in photovoltaic cells.
Starting Page	003540
Ending Page	003545
File Size	1134161
Page Count	6
File Format	PDF
ISBN	9781424458905
ISSN	01608371
e-ISBN	9781424458929
DOI	10.1109/PVSC.2010.5614207
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Silicon Purification Gallium Silicon carbide Artificial intelligence Iron Nickel
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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