Light micrograph of a polycrystalline silicon solar cell. It produces electricity from sunlight (photovoltaic effect), a clean, renewable and ecological energy. We can see the front electrodes (-) or fingers (made of silver nanoparticles) in a grid of metallic contacts (white stripes). The pitch of the grid is a trade-off between the shadow and the series resistance. The upper surface of the photovoltaic cell is an n-type layer, made of silicon semiconductor material. The blue coating layer of the microcrystals is made of silicon nitride for an anti-reflective effect. In this type of polycrystalline cell, the recombination produced in the boundaries of the faulty crystals reduces the photovoltaic efficiency. Field of view size: 16.5 x 24.8 mm (0.65 x 0.97 in)
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Creative#:
TOP12396479
Source:
達志影像
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RM
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須由TPG 完整授權
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