First results from a simplified Elkem Solar route—Input to tolerance limits
作者： Anne-Karin Søiland , Marit G. Dolmen , Johan Heide , Ulrik Thisted , Gunnar Halvorsen
DOI: 10.1016/J.SOLMAT.2014.04.012
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摘要: Abstract Elkem Solar has worked with a simplification of their metallurgical refining route for Grade silicon.This involves removing the two last process steps, directional solidification and post treatment, whilst acid leaching is adapted to yield product that can go directly multicrystalline ingot. Results from initial testing new are presented. Multicrystalline ingots based on 50% mix virgin polysilicon have been made in GT furnace compared an ingot 100% same furnace. cell results three chosen brick positions (corner, edge center) presented center position reference. Both (waferable amount brick) efficiencies comparable reference bricks attaining maximum 17.3%. Additional parameters like shunt resistance, Reverse Breakdown Voltage (RBV) Light Induced Degradation (LID) well within acceptable level standard module set-up. In parallel product, lab-scale investigations tolerance limit feedstock elements aluminum calcium conducted, Al
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