Amorphous silicon has a higher bandgap than crystalline silicon (c-Si), which means it absorbs the visible part of the solar spectrum more strongly than the infrared portion of the spectrum. Amorphous silicon (a-Si) technology has significant performance and cost advantages over traditional crystalline (c-Si) photovoltaic modules.Testing conducted in warm sunny, as well as cooler and cloudier, climates has shown that a-Si modules typically outperform c-Si modules on a normalized energy basis.

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