A novel approach for recycling of kerf loss silicon from cutting slurry waste for solar cell applications
Resource
Journal of Crystal Growth 310 (15): 3403-3406
Journal
Journal of Crystal Growth
Journal Volume
310
Journal Issue
15
Pages
3403-3406
Date Issued
2008
Date
2008
Author(s)
Abstract
A great challenge in recycling of silicon cutting kerf loss is the complete removal of silicon carbide particles. High-gravity centrifugation using a heavy medium with a specific gravity in between that of silicon carbide and silicon is not effective for the submicron particles. In this paper, a novel recycling process for obtaining silicon from the kerf loss powders is reported. The obtained silicon after directional solidification was found to be of solar grade. The average lifetime and resistivity of grown crystal were measured to be 1.02 μs and 0.7 Ω cm, respectively, which were close to the original sawing silicon and casted pure Si ingots. The energy conversion efficiencies of the solar cells fabricated from the recycled and pure silicon were found comparable. © 2008 Elsevier B.V. All rights reserved.
SDGs
Other Subjects
Centrifugation; Direct energy conversion; Energy conversion; Extractive metallurgy; Gravitation; Gravitational effects; Industrial economics; Mechanics; Metal castings; Nonmetals; Photovoltaic cells; Powders; Recycling; Salvaging; Silicon carbide; Solar cells; Solar energy; Solar equipment; (100) silicon; Average life time; Directional solidification (DS); Elsevier (CO); In between; nove l approach; Pure silicon; Recycling processes; Silicon carbide particles; silicon cutting; Solar-cell applications; Specific gravity; Sub-micron particles; Silicon
Type
journal article
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