Apr
26

New prospects for solar cells

new solar cellsThe most efficient solar cells, composed of a semiconductor material such as silicon, have been developed in Switzerland in the early 90s. As in the case of conventional electrochemical batteries, solar cells consist of a cathode, a platinum-based catalyst, and an anode, a porous layer formed from titanium dioxide nanoparticles and coated with a dye absorbs sunlight. A conductive liquid, the electrolyte is placed between two electrodes.

Despite the use of materials for the most inexpensive, easy to manufacture and flexible, large-scale commercialization of these batteries confronts two major obstacles. The electrolyte is very corrosive, causing a deficiency in sustainability. It is also very colorful, preventing light from entering and effectively limiting the photo-voltage of 0.7 volts. Moreover, platinum is an expensive material, non-transparent and rare.

Benoit Marsan and his team have been working for years to develop an electrochemical solar cell. With the help of Professor Livain Breau, also from the Department of Chemistry at University of Quebec at Montreal (UQAM), researchers have developed an electrolyte consisting of new molecules, whose concentration could be increased. The gel formed is transparent, non-corrosive and can increase the photo-voltage. Therefore, the battery is more stable and better performance. The platinum cathode has also been replaced with cobalt sulfide. This material is much less expensive than platinum. It is also more efficient, more stable and easier to produce in the laboratory.

The work conducted by Professor Benoit Marsan has solved two problems that hindered growth of the solar cell industry for 20 years: increasing the efficiency of solar cells while reducing their fabrication cost. The scientific community was excited about this work published in the Journal of American Chemical Society. Several researchers contend that the work of Professor Marsan represents a breakthrough towards the production of efficient and affordable solar cells.

Source: original article

1 Comment to “New prospects for solar cells”

  • mangalukas Thursday August 26th, 2010 at 03:39 AM

    Residential solar panels are the most discussed topic among the fans of science and scientists all over the world. We are all aware of how global warming will eat into our personal lives. Oil prices are rising day by day. Preventing children from playing near the solar panels. They could easily hurt him. The panel can be divided into three parts, frame, battery and inverter. Residential solar panels are also very flexible and can be moved by a desire to another. Residential Solar Panel must move away from dirt and contamination are kept. To be fair to say that what we must do is clean it and wipe it regularly so that the effectiveness of the group is still high. We are facing a huge shortage of fossil fuels. Environmental pollution is also increasing on a daily basis. The toxic chemicals released by cars, factories, and the other day with daily activities or events would certainly lead the world will end very soon.

    All you need is access to good sunlight clear. The rest can be removed as a precaution. Residential solar panels would save almost half of your monthly electricity bill. It also means no wasted energy. Now you can be safe from power outages.There are different types of residential solar panels on the market. First, we must understand why and for what purpose do we need a solar panel. Then we have to buy a readymade solar panel, when a trade mark or the parties so that we can go. If you would even DIY solar panels are also there on the market. Residential solar panels in various shapes and sizes. They are also different category. Everything depends on our needs and how we are willing to invest initially. If you produce more energy then you really need this special day, so you can easily transfer electricity connected to the main network.

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