Photovoltaic cells produce energy by capturing photons from sunlight and using them to release electrons in the semi-conductor (such as silicon) of the cell. As light energy is captured, these freed electrons can be directed through the use of magnetic or electrical fields to flow in a particular direction, thereby creating an electrical current. This current can then be used to power various things, such as calculators and homes in the same way that electricity generated by a power plant would be.
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