Sunday 20 March 2016

Advances in Solar Cell Manufacturing
Another area that has made solar PV technologies cost prohibitive compared to traditional fuel sources is the manufacturing process. Scientists are also focused on ways to improve the efficiency of how solar components are manufactured.
Magnesium Chloride. While over ninety percent of solar panels on the market today are comprised of silicon semiconductors, the key ingredient to converting sunlight into electricity, many believe the next generation of solar panels will be made of a thin film technology that uses narrow coatings of cadmium telluride in solar cells - this technology promises to be a much cheaper and more efficient way to engage the photovoltaic process. One major obstacle for cadmium telluride thin film cells is that they become highly unstable during the manufacturing process, which currently uses cadmium chloride. Researchers have devised a new, safe and seemingly low cost way to overcome this hurdle by using a material called magnesium chloride in replace of cadmium chloride. Magnesium chloride is recovered from seawater, an abundant resource, which makes the resource very low cost, as well as non-toxic. Replacing the manufacturing process with this material promises to increase the efficiency of these solar cells from two percent to up to fifteen percent.
New Solar Applications
When most people think of solar PV systems they think of them atop roofs or mounted for industrial scale use. But researchers are exploring a number of unconventional solar applications that could promise to transform the industry.
Solar Roadways. Scientists are exploring ways to actually line highways and roads with solar panels that would then be used to deploy large amounts of electricity to the grid. This would help overcome a major barrier to industrial scale solar, which opponents say threatens to take up too much land. Solar roadways have already popped up in the Netherlands.
Floating Solar. Another way to address land use concerns associated with wide scale solar is to erect solar plants on the water, since over 70% of the Earth's surface is covered in water. Some researchers, including a French firm called Ciel et Terre, are experimenting with this technology. The company has projects set up in France, Japan, and England and other parts of the world are also piloting projects including a project in India and California in the U.S.
Space Based Solar. Scientists are resurrecting a technology that was first tested over forty years ago in which space-based satellites capture sunlight and convert it into microwave energy that is then beamed back to earth. This type of technology promises to capture significant more amount of sunlight (nearly ninety percent) since satellites can be positioned to optimize light capture round the clock. India, China and Japan are investing heavily in these technologies right now

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