Binder-Free Pellet Fabrication of Ultra-Fine Poly-Si Powder for Economical Production of Solar Grade Si Ingot

Bong Hwan Kim; Je Sik Shin; D.S. Kim; Ki Young Kim; In Jin Shon; B.M. Moon

doi:10.4028/www.scientific.net/MSF.620-622.61

Paper Titles

Research of BOF Protection Technology by Slag Splashing
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Study on Transition Characteristics of Poly(Ethylene Glycol)/ Selected Fatty Acids Phase Change Materials
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Preparation and Microstructural Characterization of Al₂O₃/ZrO₂ Nanocomposites to Use in the Femoral Head of Hip Replacement
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Effects of Atomizing Gas on Microstructural Characteristics and Mechanical Properties of Spray Formed High Si Steels
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Binder-Free Pellet Fabrication of Ultra-Fine Poly-Si Powder for Economical Production of Solar Grade Si Ingot
p.61

Influence of Different Interlayers Metals on Properties of Diffusion Bonding Joint of Tungsten to Copper
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Micro Mechanical Property Measurement of Nickel (99.9%) Thin Film Using Vision Strain Measuring Method
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Preparation and Characterization of Sulfonated Poly(ether Sulfone) Using 4,4-Bis(4-Hydroxylphenyl)valeric Acid for Proton Exchange Membrane Fuel Cell Application
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Effects of Flow Characteristics in Polymer Electrolyte Membrane Fuel Cell
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Binder-Free Pellet Fabrication of Ultra-Fine Poly-Si Powder for Economical Production of Solar Grade Si Ingot

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.