How Does Solar Energy Work?
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What is Solar Power?
iIt all starts with the sun, a giant power source in space that makes life on our planet possible. The amount of energy the sun produces is easily enough to supply the world’s power needs many times over. Unlike traditional methods of producing usable energy, solar energy doesn’t produce harmful carbon dioxide emissions – great news for Earth’s future.
Normally, when the sun’s light shines upon an object the transferred energy is turned into heat. However, certain materials are able to turn this energy into usable electrical current. On an atomic level, when light strikes silicon crystal some of the electrons get bounced up to a higher energy level, where they move around more freely and can produce an electrical current. This chemical reaction is the magic that makes solar power possible.
What are Solar Photovoltaics?
sSolar cells that convert the sun’s energy are called solar photovoltaics. Solar photovoltaics (PVs) are arrays of individual solar cells that convert sunlight into direct current electricity. They’re constructed from materials such as amorphous silicon, polycrystalline silicon, microcrystalline silicon, cadmium telluride, and copper indium selenide or sulfide.
Due to the growing demand for renewable energy sources, the manufacture of solar cells and photovoltaic arrays has advanced dramatically in recent years.