Nine-year EL testing on 85,000 PV modules shows increasing presence of edge ribbon cracks

A UK research team used electroluminescence imaging to inspect 167 PV installations comprising a total of 5 million solar cells. Defects were categorized into into line cracks, complex cracks, edge-ribbon cracks, and potential-Induced degradation (PID). Researchers from the University of York have conducted an electroluminescence (EL) analysis on 85,000 PV modules across 167 installations located in the United Kingdom over a 9-year period and have found an increasing presence of complex and edge-ribbon cracks in recent installations. The scientists explained that the novelty of their approach ...

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