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Photovoltaic Cells: Everything you need to know!
Transcript of Photovoltaic Cells: Everything you need to know!
By Manan Shah
1. Solar Energy prices are 30 cents per kilowatt (3 to 5 times average residential electricity cost.)
2. Solar energy can only be used during daylight hours.
3. Pollution may affect solar cell productivity.
2. Solar energy is one of the cleanest forms of energy. It uses sunlight, which is free.
3. Solar energy solves the carbon emission problem (pollution).
4. The installation of solar panels is cost-effective.
President Obama is planning to install solar panels on the White House later in 2011.
Clif Bars' HQ has nearly 2000 solar panels.
Energy Pathway/ How it works
Thanks for Watching!!
Photovoltaic (PV) cells are made of special materials that are called semiconductors such as silicon
The energy knocks electrons loose, allowing them to move freely.
Use / Projected Use
When sunlight strikes the cell, a certain portion of it is absorbed within the silicon.
Nine solar power plants, in California's Mojave Desert are the largest solar generating plants in the world.
Covering 4% of the world's desert area with photovoltaics could supply the equivalent of all of the world's electricity.
Solar panels usually convert ONLY 15% of sunlight into electricity.
Albert Einstein won a Nobel prize in 1921 for his work with photovoltaic solar cells and solar energy.
By 2015, the solar industry aims to install enough new solar plants every year to power 2 million homes.
These solar plants would produce enough solar energy to replace 10 coal plants annually!
What is Solar Energy?
Solar energy is the conversion of sunlight to electricity
(Photo = light , Voltaic = electricity)
1. Increasing energy demand, rising oil prices, and depleting energy supply (coal,oil,natural gas) create the need for alternative energy sources (solar).
Solar Energy Usage (U.S.)
Continued cost reductions to accelerate in the solar industry
Sunlight falling on less than 0.5% of the mainland is sufficient to satisfy all U.S. electricity needs.
The Associated Press. “CaliforniaPCompany plans SC Solar Cell Plant.” Mercury News. Merury News, 6 Jan. 2011. Web. 6 Jan. 2011. <http://www.mercurynews.com/ci_17024176?IADID=Search-www.mercurynews.com-www.mercurynews.com&nclick_check=1www.mercurynews.com/ci_17024176?IADID=Search-www.mercurynews.com-www.mercurynews.com&nclick_check=1>.
Capello, Dina. “Solar Panels on White House.” Huffington Post. The Huffington Post, 5 Oct. 2010. Web. 6 Jan. 2011. <http://www.huffingtonpost.com/2010/10/05/solar-panels-on-white-hou_n_750525.html>.
Clean Energy Pathways. “The Pros of Solar Energy.” Many Pathways- One Goal. Clean Energy Pathways, n.d. Web. 7 Jan. 2011. <http://www.cleanenergypathways.com/Clean-Energy-Pathways/Solar-Energy/Pros-of-Solar-Energy.aspx>.
“EERE: Solar.” EERE. The US Dept of Energy, 4 Dec. 2010. Web. 3 Jan. 2011. <http://www.eere.energy.gov/topics/solar.html>.
Lisowski, Marylin, and Linda Cronin Jones. Prentice Hall Science Explorer. New Jersey: Pearson Education , 2005. Print.
Maria, Janis. “Clif Bar’s new HQ full of energy.” San Jose Mercury News 6 Jan. 2011: D3. Print.
“Pros And Cons of Solar Energy.” Clean Energy Ideas. Clean Energy Ideas, n.d. Web. 11 Jan. 2011. <http://www.clean-energy-ideas.com/articles/pros_and_cons_of_solar_energy.html>.
Revkin, Andrew C, and Matthew L Wald. “Energy Challenge : Solar Power Wins Enthusiasts but Not Money.” New York Times. Mew York Times, 16 July 2007. Web. 4 Jan. 2011. <http://www.nytimes.com/2007/07/16/business/16solar.html?_r=1>.
Toothman, Jessica. “How Solar Cells Work.” How stuff works. Howstuffworks, n.d. Web. 11 Jan. 2011. <http://www.howstuffworks.com/environmental/energy/solar-cell1.htm>.
Vadney, Joshua. “Solar Panels- The good, the bad, and the ugly.” Ezine Articles. Ezine Articles, n.d. Web. 11 Jan. 2011. <http://ezinearticles.com/?Solar-Panels---The-Good,-the-Bad,-and-the-UGLY&id=1974038>.
Cool Solar Gadgets
iUnika has unveiled a range of solar powered computers that incorporate solar panels into the machine itself.
The new solar bag by Reware features a large flexible thin film solar panel that charges your mobile devices. The Solar Panel generates 6.3 watts at 0.325 amps, and can recharge most mobile devices within a few hours.
The idea is that a solar panel is built into the battery cover, which allows the phone to slowly recharge if left in light. Current estimates are that 10 minutes of direct sun will power both models for about 3 minutes of talk.
Solar cars Photovoltaic Cells. PVC enable the panels to convert the sun’s energy into electricity that we can use. However, solar technology is expensive, and some solar panels can cost up to $400 each.
Solar cars use Photovoltaic Cells. PVC enables the panels to convert the sun’s energy into electricity that we can use. However, solar technology is expensive, and some solar panels can cost up to $400 each.
The motion of electrons creates electricity