Silicon solar cell, light micrograph

Silicon solar cell, light micrograph

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Caption: Polycrystalline silicon solar cell, light micrograph. This photovoltaic cell converts light into electrical energy. This is a clean and renewable source of energy. The cell is made from a polycrystalline silicon nitride wafer (blue), a semiconductor material, covered by a grid of electrodes. The thinner lines (vertical), known as fingers, are made of silver nanoparticles. These collect the current and deliver it to the busbars (one across bottom), which direct the current out of the cell. Polycrystalline cells are less efficient than monocrystalline cells, but are far cheaper to manufacture. Magnification: x45 when printed at 10 centimetres wide.

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Keywords: alternative energy, amorphous, busbar, clean energy, electrical power, electricity, electricity generation, electrodes, energy, environment, environmental science, green energy, green technology, light micrograph, light microscope, materials science, n-type layer, nanomaterial, nanoparticle, nanotechnology, p-n junction, photovoltaic cell, photovoltaics, polycrystalline, polysilicon, renewable energy, semiconductor, silicon, silicon wafer, solar cell, solar energy, solar panel, solar power, sustainable energy, technological, technology

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