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Fault Detection in Solar Cells

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01.10.2008

This invention permits to detect faults in solar cells during the production process. It includes a fastening device and uses a measurement tool for optical excitation of the solar cell elements in various zones. Interpretation of the resulting magnetic field permits to check whether the solar cell is faulty or not. The fault detection procedure is contact-free. It uses several laser sources to permit parallel, simultaneous checking of a large solar cell area. A new technology hinders interferences between the various magnetic fields.

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