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Solar Cell

In anticipation of its historic round-the-world flight attempt, the route planned for Solar Impulse 2 (Si2) has been unveiled. The first solar-powered plane capable of day and night flight, the Si2 will spend 25 days aloft spread over a period of five months as it traverses 35,000 km (22,000 mi) with stops at 12 locations around the globe. Read More

Although it may be handy to have sensors in your windows that remind you if you've left them open, running electrical wiring to all those sensors (or regularly changing their batteries) could be a hassle. A new window-monitoring radio sensor chip, however, gets all the power it needs from the sun. Read More

Using solar energy to split water into its component parts, thereby allowing the solar energy to be stored as hydrogen fuel, generally involves one of two methods: using photoelectrochemical cells to directly split the water, or using solar cells to produce electricity to power an electrolyzer that separates the water molecules. One problem associated with the latter method is that it currently relies on rare metals. But now scientists from Ecole Polytechnique Federale de Lausanne (EPFL) in Switzerland have managed to do so using common materials, and have achieved a record solar energy to hydrogen conversion efficiency in the process. Read More
Spray-on cells hold considerable promise for reducing the manufacturing costs of solar power. Within this field, colloidal quantum dots (CQD) have also been the focus of a number if research efforts, as they have the potential to soak up a wider range of the solar spectrum. Scientists at the University of Toronto have been aboard the quantum dot train for some time now and their latest breakthrough involves a new method for spraying solar cells onto flexible surfaces, a development that could one day see them coat anything from bicycle helmets to outdoor furniture. Read More
Solar researchers working at the University of New South Wales claim to have produced a system that converts over 40 percent of incoming sunlight into electricity, thereby taking the title of highest solar efficiency for a photovoltaic system ever reported. Read More
Blu-ray discs have proven themselves superior to DVDs as storage media in light of their high capacity, high definition, and higher transfer rate. Now researchers claim that Blu-ray discs have one more advantage over DVDs: they also have the ability to help markedly improve the efficiency of solar cells, when their etched information patterns are repurposed for use as light concentrators. Read More
Most everyone not vested in oil and gas agrees that renewable energies such as solar are a more sustainable option, but cost remains an issue. To make solar more competitive by addressing the high cost of solar cell production, researchers out of Norway have developed a method that could bring down the amount of silicon used per unit area by as much as 90 percent. The price of silicon is a major driver in the cost of solar panels. Read More
Researchers at the University of Massachusetts Amherst, Stanford University and the Dresden University of Technology have developed a long sought-after nanostructure that can significantly increase the efficiency of organic solar cells. Their "nanograss," a dense array of vertical nanopillars, can capture photons at a very high efficiency and could also lead to cheaper and more advanced 3D transistors, photodetectors and charge storage devices. Read More
Researchers at Ohio State University (OSU) have created a dye-sensitized solar cell that stores its own power by "breathing" air to decompose and re-form lithium peroxide. Its creators believe the device, which effectively combines a battery and a solar cell in one, could reduce renewable energy costs by 25 percent. Read More
While the unique shape of Buddhist singing bowls is vital to the creation of their signature sound, a researcher from Australia National University (ANU) has used their design as the inspiration for a new breed of solar cells. In completing his PhD at the University of Cambridge, Dr Niraj Lal found that just as the bowls cause sound to resonate, miniaturized versions can be made to interact with light in much the same way, inspiring solar cells better able to capture sunlight. Read More
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