Solar panels use light energy (photons) from the sun to generate electricity through the photovoltaic effect.
The structural (load carrying) member of a module can either be the top layer or the back layer. The majority of modules
use wafer-based crystalline silicon cells or thin-film cells based on cadmium telluride or silicon. The conducting wires
that take the current off the panels may contain silver, copper or other non-magnetic conductive transition metals.
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