Solar cell

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    Solar cell technology has seen little innovation since the inceptive crystalline silicon solar cell. While crystalline silicon solar cells offer stable and high efficiencies (~24% out of a theoretical 33.7% maximum1), their manufacturing process is expensive and environmentally detrimental. Over the past decade, photovoltaic and optoelectronic materials based on organic molecules have gained popularity. These cells promise to be low-cost, flexible, environmentally friendly, and functionalizable.2,3 However, due to the increased complexity of the electron-donor systems owed to discrete molecular orbitals, the efficiencies of such cells are generally much lower. The prototypical organic photovoltaic cell has a bulk heterojunction design, sporting an active layer made of a donor-acceptor blend of polymers.4 To ensure effective charge percolation, the structure of n-doped and p-doped molecules must provide continuous pathways while intermingling on a 10 nm scale to allow exciton decoupling. Irregular quasi-crystalline…

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    3.1. Types of solar cells There are 3 main types of commercially available cells: 3.1.1Mono crystalline Silicon PV& Polycrystalline Silicon PV The occupational health issues are associated to chemical burns and inhalation of fumes from hydro fluoric acid (HF) and other solutions of acids (e.g., HNO3) and alkalis (e.g., NaOH) used for cleaning wafers ,removing complete oxide layer, and cleaning the reactor. Performing the slicing of wafers also results in solid waste for example (e.g.,…

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    Non Renewable Energy

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    potential to turn into electricity) in 1839. In The 1880s photovoltaic (PV) cells were developed out of selenium that could convert light with one to two percent efficiency (“The efficiency of a solar is the percentage of available sunlight converted by the photovoltaic cell into electricity”) (alt) The way the energy was converted to electricity was a mystery until Albert Einstein proposed an explanation in the early 1900s, that won him a Nobel Prize and led others to a better understanding of…

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    deciding whether or not to use solar energy as an alternative solution to fossil fuels such as coal, petroleum, natural gas and nuclear energy for our energy consumption. 2.1 Impact on resources Many non-renewable resources are being extracted to the point of exhaustion without any consideration to the fact that these fossil fuels may not restore themselves in this century or at all. Coal, which is thought to be the most widely available resource, is estimated to last no longer than 50…

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    Solar Energy The sun is the most abundant energy source available and used on Earth, hands down. The problem is, much of the energy from the sun that is used on Earth is used by primary producers, not by us, and what they do use is an incredibly small compared to the 89,300 TW retained on Earth at any instant. What we use is smaller still (22). The first step in harnessing the awesome potential our very own star is understanding just how to do that. Think of the inside of a solar cell, the…

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    Flat Plate Collector Essay

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    Container. The casing surrounds the upper parts to protect them from dust, moisture Solar energy…

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    Photovoltaic Cell Essay

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    Photovoltaic Cells Using Single-Walled Carbon Nanotubes as a Sustainable Alternative Energy Source As a result of all the developments made since the Industrial Revolution, humans have managed to improve the quality of life, expand human knowledge and witness a rapidly increasing population. However, along with these advancements come crucial concerns about pollution, the global climate, and energy security, all of which exacerbate each other. As the human population increases and global…

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    Solar Panel Essay

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    What is foldable solar panel and what are its uses? Description: The self contained foldable solar panel is the photovoltaic cell or converter used to convert solar energy into electrical energy. They are budget friendly, convenient to use and offer a continuous supply of electricity in out areas. Solar panel is used to convert the solar energy into electrical energy so that it may be used to power the home, the appliances or electrical stuffs used. It saves money, electricity bills and helps…

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    • Back up is always available for any kind of circumstances. Disadvantages: • Power bill will be a big issue. • Service fee will be charged for supplying electricity. • This system cannot guarantee a constant power supply to home. • Smart meter and load sizing should be maintained. Stand-Alone Solar System Usually this kind of system is used for residential purposes. A storage system is added to the grid connected solar system by replacing the grid with battery, capacitor kind of things. In…

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    Standalone Solar System

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    Standalone Solar Systems - Best Source of Power Supply By monety rackson Jan 25, 2013 Despite energy being the dire need of everyone, there are some corners of the world that still lie shady because of the absence of energy. Fans, air conditioners, bulbs, one cannot think of a life without them. But these things are left meaningless in the absence of energy. Solar systems With time, solar systems have emerged as a solution to the power needs. Whether it is a place where energy does not reach…

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