Quality control method based on photoluminescence imaging for the performance prediction of c-Si/a-Si:H heterojunction solar cells in industrial production lines
A PL based quality control method for heterojunction solar cells is presented.
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FF losses are correlated to a defectivity parameter extracted from PL images.
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The efficiency of non-metallized cells can be predicted with deviations below 0.2%.
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The origin of the defects revealed by PL imaging is also investigated.
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