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Microstructural Analysis of Local Silicon Corrosion of Bifacial Solar Cells as Root Cause of Potential-Induced Degradation at the Rear Side
Graphical Abstract
Industrial bifacial PERC solar cells show a new type of potential induced degradation (PID) at the rear side. After PID stress, cells exhibit power losses about 12 %rel. The origin of the losses is traced back to a local silicon corrosion, forming hole shaped damages within the passivation layers at the rear side. More details can be found in article number 1900334 by Kai Sporleder, Christian Hagendorf, and co-workers.
