Solar Cell Electricity Essay

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In order to competently compare photosynthesis and semiconductor-based solar cell's production of electricity i.e. solar cell electricity, they both must be defined. Photosynthesis is defined as, (Biology Online, 2010) “The synthesis of complex organic material using carbon dioxide, water, inorganic salts, and light energy (from sunlight) captured by light-absorbing pigments, such as chlorophyll and other accessory pigments.” According to Thomas gale, ( Thomas gale, 2006), solar cells create electrical energy by converting sun light into electricity by using photovoltaic effect. These processes are similar because they both require sun light, transform that sun light and both processes are environmentally friendly. Photosynthesis and…show more content…
They both use the sun for transformation. Photosynthesis transforms sun energy with the help of water and CO2 into 02 and glucose. Solar cells transform using heat engines and photovoltaics but still produce usable electricity. The last comparison is that they are both environmentally friendly processes. It would seem obvious that photosynthesis which occur s naturally in nature would benefit the environment but solar power energy generation is also helpful to the environment. (Solar Electric Light Fund, 2007) Solar energy is a renewable and sustainability. It doesn’t release harmful chemicals into the environment like coal, oil and gas. While Photosynthesis and semiconductor-based solar cell's production of electricity have many similarities they are also different on many levels. The first major difference between Photosynthesis and solar cell electricity is the way the processes are conducted. Photosynthesis is a chemical breakdown of sunlight that occurs in two stages, the light reactions and the Calvin Cycle. Solar cell electricity isn’t a chemical process it is an electrical process known as photovoltaic effect. In an article on Photovoltaic Systems Research & Development described the photovoltaic effect. The light from the sun consist of photons--packets of solar energy. Photons hold different amounts of energy. When photons strike a photovoltaic cell, the photons may be absorbed, or pass right through. The photons that are
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