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Photosynthesis & Solar Photovoltaic Technology
What is photosynthesis and how does photosynthesis work? How is process of photosynthesis linked to photovoltaic technologies? How are they the same and how are they different? This paper will delve into those issues and provide answers to the questions.
Photosynthesis is the process in which green plants create their own food thanks to sunlight shining on them. Animals eat other organisms for their nutrient intake, but plants make their food thanks to the fact that they have chlorophyll. Chlorophyll is the pigment that creates the green color in plants and it "…captures the Sun's energy and uses it to make sugars out of carbon dioxide from the air and water" (Ohio State University, 2008). The sugars are vital to the process because they provide fuel for the roots of the plant, the stems and leaves of the plant, and allow the plant to continue to grow. And once the plant has made adequate food through sunlight to provide a healthy condition for the plant, it releases oxygen into the air, and of course oxygen is what humans and animals need in order to breathe and live.
In the Handbook of Photovoltaic Science and Engineering, the...
Basically it is an artificial strategy to repeat what photosynthesis does in the natural world, Luque explains). In the natural world light is converted into chemical energy, and this is achieved because of: a) "proximal location of molecular components"; b) energy received in "excited states"; and c) "time, concerning the rates of competing processes" (Luque). Moreover, in PV technology Sunlight strikes the solar cells and through artificial "bonding strategies" that are "covalent and non-covalent" electricity is produced.
Author Tetsuo Soga explains that "…the physics of organic PV cells is much closer to that other, much older and more sophisticated, example of organic electronics: photosynthesis" (Mapel, et al., 2007, p. 335). In fact photosynthetic plants and bacteria are known to "…utilize organic molecules similar to those used in…
Works Cited
Green, Jenny. (2011). Photosynthesis or photovoltaics: Weighing the impact. ASU News
[Now]. Arizona State University. Retrieved October 29, 2012, from https://asunews.asu.edu/20110512_photosynthesis_photovolatics.
Luque, Antonio, and Hegedus, Steven. (2011). Handbook of Photovoltaic Science and Engineering. Hoboken, NJ: John Wiley & Sons.
Mapel, J.K., and Baldo, M.A. (2007). "The Application of Photosynthetic Materials and Architectures to Solar Cells," in Nanostructured Materials for Solar Energy
Retrieved October 29, 2012, from http://www.governorsresidence.ohio.gov.
However, unlike chlorophyll, silicon cannot be used for energy-generation in its raw state, and must be processed by humans. Silicon is favored "because it remains a good conductor of electricity even after it has been heated. In order for silicon to be used for solar cells, it must be heavily heated to separate it from oxygen so that it can be further processed" (Stier 2009). Although solar energy is
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