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A solar cell is a semiconductor device that converts photons from the sun (solar light) into electricity. In general a solar cell that includes both solar and non-solar sources of light (such as photons from incandescent bulbs) is termed a photovoltaic cell. Fundamentally, the device needs to fulfill only two functions: photogeneration of charge carriers (electrons and holes) in a light-absorbing material, and separation of the charge carriers to a conductive contact that will transmit the electricity. This conversion is called the photovoltaic effect, and the field of research related to solar cells is known as photovoltaics. A solar cell, made from a monocrystalline silicon waferSolar cells have many applications. They are particularly well suited to, and historically used in, situations where electrical power from the grid is unavailable, such as in remote area power systems, Earth orbiting satellites, handheld calculators, remote radiotelephones and water pumping applications. Assemblies of solar cells (in the form of modules or solar panels) on building roofs can be connected through an inverter to the electricity grid, often in a net metering arrangement. CONTINUE...
Un impianto fotovoltaico trasforma direttamente l’energia solare in energia elettrica.
Esso è composto essenzialmente da: moduli o pannelli fotovoltaici;
inverter, che trasforma la corrente continua generata dai moduli in corrente alternata; quadri elettrici e cavi di collegamento.
I moduli sono costituiti da celle in materiale semiconduttore, il più utilizzato dei quali è il silicio cristallino. Essi rappresentano la parte attiva del sistema perché convertono la radiazione solare in energia elettrica. CONTINUA ...
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| photovoltaic, photovoltaic cell, photovoltaic panel, photovoltaic system, photovoltaic solar cell, photovoltaic solar panel, photovoltaic roof, solar photovoltaic |
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