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Transcript of Photovoltaic Cells
What are Photovoltaic Cells?
Limited efficiency levels, ranging between 12-20%
Produce direct electric currents which must be converted to alternating currents before it is used.
-PV panels provide clean energy.
-During electricity generation with PV panels there is no harmful greenhouse gas emissions.
-These panels, through photoelectric phenomenon, produce electricity in a direct electricity generation way. (No burning fuel or gas to produce the energy).
-A photovoltaic cell (PV cell) is a specialized semiconductor diode that converts visible light into direct current (DC). Some PV cells can also convert infrared (IR) or ultraviolet (UV) radiation into DC electricity.
-Solar energy is energy supplied by nature, so it is free and abundant.
-Solar Panels cost is currently on a fast reducing track and is expected to continue reducing for the next years.
-Operating and maintenance costs for PV panels are considered to be low, almost negligible, compared to costs of other renewable energy systems
-PV panels have no mechanically moving parts, except in cases of –sun-tracking mechanical bases; consequently they have far less breakages or require less maintenance than other renewable energy systems (e.g. wind turbines)
-Solar photovoltaic panels are one of major renewable energy systems that are promoted through government subsidy funding (FITs, tax credits etc.).
"Advantages and Disadvantages of Solar Photovoltaic – Quick Pros and Cons of Solar PV." Renewable Energy World. Dino Green, 19 Dec. 2012. Web. 04 Apr. 2014.
"Photovoltaic News and Pv Jobs." Pv Magazine. Ian Clover, 20 Sept. 2013. Web. 05 Apr. 2014.
-Solar energy can be made available almost anywhere there is sunlight
-Arrays of PV panels can be found worldwide
- Photovoltaic cells create electrical power, converting solar radiation into direct current electricity to get the photovoltaic effect.
-PV panels are completely silent.
-This makes them a perfect solution for urban areas and for residential homes.
#5 Easy to Install
-Residential solar panels are easy to install on rooftops facing south or on the ground without any interference to residential lifestyle.
-Materials used; monocrystalline silicon, polycrystalline silicon, amorphous silicon, cadmium telluride, and copper indium gallium selenide/sulfide
-Photovoltaics are best known as a method for generating electric power by using solar cells to convert energy from the sun into a flow of electrons
Areas with greater cloud cover and shorter days will experience lower power generations, and such systems have to be designed accordingly.
-Energy used to create photovoltaic cells is replenished in 2 years
There is still a lot that we do not know about photolvotaic cells, they are still very experimental.
- More the 100 countries use this energy source
-Beside hydro power and wind power, photovoltaic cells are the most important and efficent source of energy
Photovoltaic cells produce electricity because when sunlight hits the transparent cells the emit electrons, so therefore thousands of them together produce electricity.