Energy: Solar cells are optoelectronic devices that convert sunlight directly into electricity. This technology is central to the renewable energy sector.
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It can be divided into three regions: ultraviolet (UV) – with wavelength shorter than 400 nm, and photon energy higher than 3. In solar light, 46% of power is carried by IR photons, 47% by visible light photons, and 7% by UV photons.
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The PV technology convert visible spectrum to electricity and thermal collectors use both infrared and visible spectrum for energy generation. So the energy generation from solar radiation can be in the form of electrical energy or thermal Energy.
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