Binder-Free Pellet Fabrication of Ultra-Fine Poly-Si Powder for Economical Production of Solar Grade Si Ingot
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Published:2009-04
Issue:
Volume:620-622
Page:61-64
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ISSN:1662-9752
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Container-title:Materials Science Forum
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language:
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Short-container-title:MSF
Author:
Kim Bong Hwan1,
Shin Je Sik1,
Kim D.S.2,
Kim Ki Young2,
Shon In Jin3,
Moon B.M.1
Affiliation:
1. Korea Institute of Industrial Technology
2. Korea University of Technology and Education
3. Cheonbuk National University
Abstract
The consolidation process of ultra fine Si powders, generated as by-product during the decomposition process of silane gases, was systematically investigated for use as economical solar-grade feedstock. Si powder compacts were tried to fabricate by a consolidation process without a binding agent and then their density ratio and strength were evaluated. The Si powders in as-received state were not pure enough to be used alone as solar grade feedstock material. After the adequate chemical treatments, a sufficiently high purity above solar-grade was able to be achieved.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science