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Multicrystalline (mc) solar cells made from n‐type silicon feedstock have shown record efficiencies of 22.3% in a tunnel‐oxide passivating contact (TOPCon) cell structure. Still, material‐related carrier recombination limits the attainable efficiency. Herein, the findings of metallic impurity and structural defect concentration present in n‐type mc silicon are summarized, and their limiting properties...
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