A solar cell is a device which produces electricity from light through photovoltaic effect. This solar cell is the term especially used in the case of capturing light from sunlight and the term photovoltaic cell is mostly used when you capture light from any other device. Both involve converting the light energy into electricity. These solar cells can be converted into solar panels, solar modules or photovoltaic arrays by the assembly of solar cells. This produces an energy which is called as solar energy.

Even though the idea of solar energy production from light was from earlier days, the modern age of solar power technology started in 1954. From that time onwards many advances were made and many types of solar cells have been introduced. Solar cells are hitting the market frequently with various modifications and advancement in technologies. There are many different solar cells for sale.

You can find solar cells for sales in many places both online and offline. The costs of these solar cells are established according to cost-per-watt. In the case of infrared capable photovoltaic cells cost depends on the cost-per-watt in 24 hours. As the cost is too high it is not within the price range of many people. Hence, university of Utah engineers planned to design a new way solar cell with thin wafers of the chemical element germanium; this reduces the cost by a massive amount.

The use of solar cells in your house will reduce your electricity bill by a huge amount of money. As the use of this kind of cell increases, the production of any kind of renewable energy can be pumped back into the grid earning you some extra money. An average household requires a power system that produces 3 to 5 KW but if used properly then 1 KW unit is enough for all lights, running of TV, DVD, microwave and other ordinary household things.

When looking for solar cells for sale for your household it will probably work out to be around $5 per watt. So any household requirements needs an investment of $ 15,000 to $25,000 whereas the PV i.e., photovoltaic panel this will cost around $9,000 to $15,000.

Solar Cell Efficiency

No one can deny that we will need to find alternate sources of fuel in the future.  Fossil fuels are getting more expensive as they become more difficult to find and extract.  Even when we find large reservoirs of fuel, it is often in troubled countries, which makes utilizing this form of energy very difficult.  That is why renewable energy sources such as wind, solar, and wave power may hold the solution to our impending energy crisis.  Solar cells have long been a popular choice for converting the energy of the sun into energy that we can use.  However, the initial cost of purchasing and installing cells is prohibitive for more people, especially in developing countries where they need electricity the most.  Therefore, increasing solar cell efficiency is the key to making this renewable energy technology more available to the masses.

Solar cells create electricity from the sun’s rays through a photovoltaic process.  This essentially means that silicon panels treated with various chemicals are able to capture the sun’s UV rays and convert them into usable electrical energy.  Experimentation is taking place with various surface textures and treatments to find the maximum solar cell efficiency.  This not only lowers the price per watt of electricity generated, but it means that less panels are needed to produce the same amount of electricity, which lowers installation cost.

One way to increase solar cell efficiency is through multi-junction solar cells.  This works through using two or more layers of thin cells that are calibrated to most efficiently absorb light at certain wavelengths.  As long as all the layers cover the entire light spectrum, the efficiency of the solar cells will increase.  There is also a new technology involving light absorbing dyes that derives most of its efficiency from decreased production costs as dyes can be printed on sprayed on the cells.  Other people feel that the use of nanotechnology will bring about the most solar cell efficiency.  The current trend in nano solar cells is to increase the surface area of the cell by building what essentially looks like miniature skyscrapers all over the cell’s surface.  This means that the surface area is increased without making the cell itself larger.

Scientists are working on increasing solar cell efficiency so that consumers will find the cost of installing solar cells more palatable.  Regardless of any advances, today’s solar cells usually pay for themselves within five to seven years as you watch your electricity bill drop from one hundred to zero dollars per month.

About Solar Energy

Sunlight is the most reliable and renewable source of energy. The unsurpassed heat and light emitted by the sun not only helps life to sustain on our planet but also provides alternate energy which goes on and on and on. Solar energy means using the sunlight to generate electricity, heat water and cool rooms and run various appliances at home and offices.

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Solar energy is an alternative energy source which is non-depleting. This concept of harnessing sun for power and energy has saved the natural resources of our planets from getting exhausted. This concept started spreading rapidly in the middle of 20th century. Since then people started preferring solar energy for their homes and offices rather than the other conventional means. Using solar power is not only cost-effective but also dependable and unswerving.

Difference between other energy sources and solar energy

Though there are other substitutes for solar energy, sources such as coal, gas and petrol, they are not renewable. It means once used, forever gone. Being a renewable source of energy, solar power is much more preferred than the wind power, hydro electricity and Geo thermal. There are chances of non-renewable sources emitting smoke and polluting the environment when burnt, whereas the solar energy is environment friendly and clean to use. This is one of the reasons why it is also called as ‘Green Energy’.

How is Solar Energy used?

The most updated method of exploiting solar power is through a huge panel consisting of solar cells. These cells capture the sunlight which can be used to run small home appliances to huge machinery. While the cells absorb sunlight during the day it can be utilized for lighting homes and buildings at night.

How does solar energy work?

The solar cells which are also called as Photovoltaic (PV) cells convert the sunlight into electricity. While the tiny cells are used in watches and clocks, huge panels are used for larger structures. The PV cells are arranged in arrangement on a panel for steady absorption of solar energy. The larger the arrangement, the more the energy.

Who can benefit from solar energy?

Solar energy acts as a dependable source of power not only for homes and office. Installing solar panels in hospitals and public places can avert accidents and help in emergencies. For some reason the power backups and the generators installed in the buildings cannot be relied upon completely. Being an automatic process the solar cells get charged themselves, and store energy whereas the other backup equipments might require frequent monitoring.