Latest on Solar Energy around the World

The Concept of Spray on Solar Power Cells

Solar energy is one of the many renewable sources of energy that is today used for providing electricity and for use in many consumer products. Though solar energy does not emit harmful gases into the atmosphere; it has a drawback that it works only in the presence of sunlight. So in a bid to overcome this default of solar energy, scientists have now invented a plastic solar cell that has the ability of turning sun power into electricity even on cloudy days.

These plastic solar cells work based on nanotechnology and is the first solar cell that can harness the energy found in the sun’s invisible and infrared rays. With this finding, theorists predict that plastic solar cells are basically five more times efficient than the technology that is presently used for solar energy.

Making these plastic solar cells is easy as the composite just has to be sprayed onto the material to make it be able to use solar energy. In other words, with this composite, you have a sort of portable source of electricity. With a sweater that is coated with this composite, you will be able to power a cell phone or any other wireless device. Similarly, a hydrogen powered car that is painted with the composite helps in converting solar energy into electricity, which in turn can be used to continually recharge the battery of the car.

With this idea, scientists and researchers envision a ‘solar farm’ to develop in the future where the plastic material is rolled across deserts so that the solar energy found here is harnessed to generate sufficient energy to supply power to the whole planet.

It is a known fact that the sun power that reaches the earth delivers 10,000 times more energy than is consumed by man today, so scientists infer that if at least 0.1 % of the earth’s surface is covered with very efficient, large area solar cells like this composite material, it is possible to replace all the other energy sources on earth with a single source of power that is not only clean but also renewable.

The concept of plastic solar cells is not new; however the material that was used so far only harnesses the sun’s visible light. It is only half of the sun’s power that is found in the visible spectrum; the other half lies in the infrared spectrum. It is this new material that is the first plastic composite that has the capacity of harnessing this infrared portion of the sun.

All things that are warm radiate heat; even people and animals. This is because there is some power remaining in the spectrum, the infrared portion that is emitted even when it is dark outside.

Specially designed nano particles called quantum dots are combined using a polymer so that the plastic detects energy in the infrared energy of the sun.

In the future, with further developments, it is predicted that this new plastic will be able to harness a maximum of 30% of the sun’s energy, in comparison with the 6% of solar power that is harnessed today in the best plastic solar cells.

Thin Solar Cells for Cheaper Green Power

The increase in the amount of harmful gases from the burning of fossil fuels has led to an increase in global warming of the earth. This is why people are now turning to alternative sources of renewable energy that can be harnessed to provide for the electricity and energy needs of mankind. One such source of energy is solar energy. Though solar energy is available for free and aplenty around the world, the costs associated with setting up a solar energy unit proves to be too expensive for everyone to use solar energy to power their homes. This is why scientists are looking for new ways of harnessing this solar energy so that it will be cheaper for everyone to use solar energy to power their homes.

Scientists have now working on developing light absorbing materials that can be used in the production of thin-layer photovoltaic (PV) cells. These PV cells are used for converting light energy into electricity. This research involves the scientists conducting experiments while using different materials that are less expensive and more sustainable for the manufacture of solar panels.

Presently, most of the solar panels are manufactured using thicker silicon based cells with compounds that contain indium which is a rare and expensive metal. As this is thick and is manufactured from a rare metal, this is an expensive option for producing solar energy. Researchers are therefore working on developing thin layered PV cells with the help of materials like copper indium dieseline and cadmium telluride.

Research is going on for the development of cheaper and more sustainable variants of these materials for producing solar energy. In addition to this, researchers are looking for means of changing the growth of these materials so that they form a continuous structure. Having a continuous structure is essential for conducting energy trapped by solar panels, before this energy can be turned into usable electricity. With this, there is an improved efficiency in these thin-layered PV cells.

Researchers hope that the development of more affordable thin filmed PV cells will lead to a decrease in the cost of solar panels in the domestic market. With this, it is envisioned that the use of solar power is increased while the dependence on fossil fuels, reduced.

At present, only one hundredth of one percent of the home energy needs in UK is provided by solar energy.

With the new thin layered PV cells, solar panels will be made and fitted to roofs to help power homes. Any surplus electricity in a home will be fed back to the National Grid, for safety purposes. With this, cheaper fuel bills are also envisioned in the future.

So with the cost of the materials required to start harnessing solar energy being rather expensive, its uptake has slowed down considerably.

So researchers hope these thin solar cells will make it cheap enough for a consumer to be able to buy a solar energy system off the shelf, to use for their energy needs in the future.

Solar Power in Cars

Solar energy is one of the many renewable sources of energy that is used for fuelling vehicles, running consumer products and for the efficient running of homes and business establishments. Solar power is harnessed with the help of solar cells and solar panels which are placed in the item that has to be powered.

The solar car is something that is envisioned to materialize in the future, with some countries already having solar cars racing across countries.

With this, it is proven that it is viable to indeed produce and manufacture solar power cars in bulk, in the near future so that everyone will soon own a solar power car.

Of course, once solar power cars are manufactured, it does not implicate that all other fuel sources for cars on highways will be removed. All that is done in solar power cars is the supplementation of traditional fuel with solar energy so that you save not only on your economy, but also save the environment in more ways than one every year.

The solar power cars that are used in races today run only on solar power, and thus look odd in appearance. This is because these cars are designed in such a way that they can collect maximum solar energy with which it is possible for the car to gain the required speed and desired efficiency.

The solar cells used in solar power cars are large, and usually cover the entire vehicle. However in case of commercial uses, solar cells are much smaller and designed so that the vehicle not only looks attractive, but is also efficient in its functioning. Solar cars can be used for short commutes in town as these cars can work only on solar energy.

The batteries found in the vehicle stores excess solar power so that this power can be used when solar power is not available on demand like on cloudy days and at night time. The engines found in these solar power cars are very much like the engines found in electric cars found today. In addition to this, the cars are lightweight, so that solar power can be used more efficiently.

At present, there are many types of solar power cars in the development stage today, which are also available for sale. However as these cars are in the developmental stage, the car is not available to the general public. With so many benefits found in solar power cars, its cost will not be much higher than the cost of the traditionally powered vehicles of today.

Another benefit of solar power cars is there is no hassle of stopping at gas stations for gas nor is there the need of getting worried of rising gasoline costs. With a solar power car, you save on the money that you would have otherwise have needed for buying fuel to run your car. In addition to this, with solar power cars you will be doing your bit in stopping global warming problems as there are no fuel emissions from solar power cars.