Army researchers at the Redstone Arsenal have announced a significant breakthrough in solar energy production. They’ve created a photovoltaic solar panel that is smaller, more robust and less expensive to build and operate than any other panel currently available. Virtually every solar panel currently in existence relies on a pure silicon construction, however the band gap (the wavelength of light that it can actually be absorbed and converted into electricity) of single crystal silicon is exceedingly narrow compared to the full spectrum shining down from the Sun. Not only does this mean that conventional panels are missing out on potential power, the ultraviolet and infrared wavelengths actively damage the panels by causing them to heat, warp and crack. The Army’s panel, on the other hand, sandwiches super thin layers of metals like silver and gold between the semiconductor layers. With these added layers, the panels offer a wider band gap for energy generation and can be tuned to reflect the harmful rays as well. What’s more, the Army’s panels generate the same amount of energy regardless of the angle that sunlight is hitting it. That means they don’t have to be affixed to expensive and motorized Sun-tracking stands. The technology is still in its very early stages, explained Wayne Davenport, Optical Sciences Function Chief of the Weapons Development and Integration Directorate, in a statement. “As with many basic research projects, the near-term benefits are sometimes yet undefined but are clearly worth the investment, ” Davenport continued. “The Army’s research laboratories at AMRDEC continue a legacy of high quality research projects and I expect to see many more of these type projects transition to the Warfighter in the future.” [Image Credit: AFP/Getty Images] Filed under: Science Comments Source: US Army
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Army scientists build smaller, tougher, cheaper solar cells
An anonymous reader writes: Software developer Nolan Lawson says Apple’s Safari has taken the place of Microsoft’s Internet Explorer as the major browser that lags behind all the others. This comes shortly after the Edge Conference, where major players in web technologies got together to discuss the state of the industry and what’s ahead. Lawson says Mozilla, Google, Opera, and Microsoft were all in attendance and willing to talk — but not Apple. “It’s hard to get insight into why Apple is behaving this way. They never send anyone to web conferences, their Surfin’ Safari blog is a shadow of its former self, and nobody knows what the next version of Safari will contain until that year’s WWDC. In a sense, Apple is like Santa Claus, descending yearly to give us some much-anticipated presents, with no forewarning about which of our wishes he’ll grant this year. And frankly, the presents have been getting smaller and smaller lately.” He argues, “At this point, we in the web community need to come to terms with the fact that Safari has become the new IE. Microsoft is repentant these days, Google is pushing the web as far as it can go, and Mozilla is still being Mozilla. Apple is really the one singer in that barbershop quartet hitting all the sour notes, and it’s time we start talking about it openly instead of tiptoeing around it like we’re going to hurt somebody’s feelings.” Read more of this story at Slashdot. 
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