PATRICK DUMAS / EURELIOS / SCIENCE PHOTO LIBRARY PATRICK DUMAS / EURELIOS / SCIENCE PHOTO LIBRARY
Photovoltaic cell production worker examining photovoltaic cells. Each rectangle consists of a layer of polycrystalline silicon, with a laminated backing and printed circuitry to conduct the electricity formed when sunlight falls on the silicon. Silicon is used in photovoltaic cells because, as a semiconductor material, it has space in its electronic structure to absorb the energy of incoming sunlight and convert it into an electrical current. Photographed at the Photowatt factory in Caen, France.
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