Warka Water – Every Drop Counts. SE | USA | Solar Technology made by SOLON | solar,… Meghan Sapp. Robert NDONG. William Danshin. PANGEA | Partners for Euro-African Green Energy. Solar Power. Training/education. Solar Power reseach project. Industry Directory. Photovoltaics. Photovoltaic SUDI shade is an autonomous and mobile station in France that provides energy for electric vehicles using solar energy.
Photovoltaics (PV) is a method of generating electrical power by converting solar radiation into direct current electricity using semiconductors that exhibit the photovoltaic effect. Photovoltaic power generation employs solar panels composed of a number of solar cells containing a photovoltaic material. Mainstream materials presently used for photovoltaics include monocrystalline silicon, polycrystalline silicon, amorphous silicon, cadmium telluride, and copper indium gallium selenide/sulfide.
Due to the increased demand for renewable energy sources, the manufacturing of solar cells and photovoltaic arrays has advanced considerably in recent years. Solar photovoltaics is a sustainable energy source.[1] In 2013, its fast-growing capacity increased by 36% to a running total of 136 GW, worldwide. Solar cells[edit] Current developments[edit] Economics[edit] How do Photovoltaics Work? By Gil Knier back to the Science@NASA story "The Edge of Sunshine" Photovoltaics is the direct conversion of light into electricity at the atomic level.
Some materials exhibit a property known as the photoelectric effect that causes them to absorb photons of light and release electrons. When these free electrons are captured, an electric current results that can be used as electricity. The photoelectric effect was first noted by a French physicist, Edmund Bequerel, in 1839, who found that certain materials would produce small amounts of electric current when exposed to light. The diagram above illustrates the operation of a basic photovoltaic cell, also called a solar cell. A number of solar cells electrically connected to each other and mounted in a support structure or frame is called a photovoltaic module. Multiple modules can be wired together to form an array. As shown below, a multijunction device is a stack of individual single-junction cells in descending order of band gap (Eg).