Photovoltaic solar cells
The photovoltaic solar cells help to capture the sun's energy and convert it into electricity. This system of generating electricity is a clean and reliable method that can reduce the cost of electricity. Apart from the solar panels the photovoltaic system uses a mounting structure for tilting the panels towards the sun, an inverter for converting the direct current generated by the panels to alternating current used for powering appliances, storing of batteries for use in rough weathers and a charge controller for regulating the operation of the battery.For conversion of sunlight into electricity you would need a semiconductor material such as silicon to act as the insulator and also conduct electricity under specific conditions.
When the semiconductor is exposed to sunlight it releases electrical energy in small amounts which is caused by electrons that leave the semiconductor’s surface when they are hit by the light rays. This is called the photoelectric effect.
Sunlight is made up of photons that contain particles of solar energy. However not all photons carry the energy in the same amount. When these photons hit the photovoltaic solar cells they either gets reflected by the photovoltaic cells or get absorbed or only those photons which are absorbed by the photovoltaic solar cells get converted into solar energy in the form of electricity.
The photovoltaic system is a cluster of photovoltaic solar cells connected to each other and are called the solar panel. The purpose of the batteries is to collect and stock up the solar energy that was converted by the solar panels into electricity.
A charge controller is an electrical gadget that maintains the charge that is being fed into the batteries thus preventing it from being damaged due to excessive charging and also stops the flow of current from flowing out of the battery into the solar panel.
An inverter is yet another electrical gadget meant for altering the electricity that is produced by the solar panels from direct current to alternating current. This alternating current is the electricity that is available from the sockets in your house.
These photovoltaic solar cells are known to last for 25 to 30 years. There are different sizes and types of photovoltaic solar cells for the production of solar energy in differing amounts.
A new technology called the Building Integrated Photovoltaics or BIPV is being used where the solar cells are built into the construction of a building. They look very natural like any ordinary rooftop, window, shade or even concrete. These photovoltaic solar cells are made of thin film which is flexible.
The BIPV systems are great systems that save the cost of electricity and in some areas these energies can be used as a replacement for the existing sources of electricity. The versatility of BIPV system is demonstrated in its ability to be incorporated in the on grid system or to be interfaced with the electric utility.
This can help the house owner to get free electricity for their own household use and also sell it back to the utility where they can get checks back from the electric companies. These BIPV systems can be used in facades of buildings such as the decorative glass. The photovoltaic solar cells can also be integrated with structures like awnings. This is effective at the sides of the building or in areas that get maximum sunlight.
Photovoltaic solar cells that are used as skylights use the BIPV technology very effectively especially when it is turned towards the sun’s direction. Though the cost of the photovoltaic system is high a good way of reducing the cost is by using concentrated photovoltaic solar cells where the sunlight is concentrated onto these cells that produce more energy by using less cells.
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Related information
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- PV solar panels The photoelectric effect is what converts light into electricity inside the cells of photovoltaic (PV) solar panels.
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- Solar cell phone charger Solar cell phone chargers are essential items when traveling. They often come with a range of adapters that will fit most phone brands.
- Solar cells Solar cells convert light energy into electrical energy through the photoelectric effect and they are often called photovoltaic cells.
- Solar photovoltaic system Solar photovoltaic systems refer to solar electricity systems that use silicon solar panels to convert the sun's energy into electricity.
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- Solar shingles Solar shingles are small solar panels made to look like regular roofing shingles. They are made from flexible thin-film solar cells.
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