Showing posts from September 4, 2016

photovoltaic cell

Photovoltaics (PV) covers the conversion of light into electricity using semiconducting materials that exhibit the photovoltaic effect, a phenomenon studied in physics, photochemistry, and electrochemistry. A typical photovoltaic system employs solar panels, each comprising a number of solar cells, which generate electrical power. The first step is the photoelectric effect followed by an electrochemical process where crystallized atoms, ionized in a series, generate an electric current.[1] PV Installations may be ground-mounted, rooftop mounted or wall mounted. Solar PV generates no pollution.[2] The direct conversion of sunlight to electricity occurs without any moving parts. Photovoltaic systems have been used for fifty years in specialized applications, standalone and grid-connected PV systems have been in use for more than twenty years.[3] They were first mass-produced in 2000, when German environmentalists and the Eurosolar organization got government funding for a ten thousand r…