Tag Archives: solar cell

BAE Systems designs hard composite solar cells: could act as structure of UAVs, piece of soldier’s gear

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BAE designs hard composite solar cells could act as structure of UAVs, piece of soldier's gear

BAE Systems revealed that it's working on hardy, high-capacity solar cells that could power unmanned vehicles and even attach to an individual soldier's gear. According to Darren Buckle, a manager from BAE Systems' Advanced Technology Center, the cells are geared toward smaller, often airborne, military units, where weight is at a premium. The system, still in the development stage, could offer up power for heavy endurance unmanned air vehicles, provided the cells are made sensitive enough to absorb energy in less sunny situations -- something that the company's England-based engineers are currently contending with.

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BAE Systems designs hard composite solar cells: could act as structure of UAVs, piece of soldier's gear originally appeared on Engadget on Thu, 12 Jul 2012 17:45:00 EDT. Please see our terms for use of feeds.

Permalink   |  sourceDefense Tech  | Email this | Comments

All-carbon solar cell draws power from near-infrared light, our energy future is literally that much brighter

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Fully carbon solar cell can power up from infrared light, our future is literally that much brighter

What's this orange-like patch, you ask? It's a layer of carbon nanotubes on silicon, and it might just be instrumental to getting a lot more power out of solar cells than we're used to. Current solar power largely ignores near-infrared light and wastes about 40 percent of the potential energy it could harness. A mix of carbon nanotubes and buckyballs developed by MIT, however, can catch that near-infrared light without degrading like earlier composites. The all-carbon formula doesn't need to be thickly spread to do its work, and it simply lets visible light through -- it could layer on top of a traditional solar cell to catch many more of the sun's rays. Most of the challenge, as we often see for solar cells, is just a matter of improving the energy conversion rate. Provided the researchers can keep refining the project, we could be looking at a big leap in solar power efficiency with very little extra footprint, something we'd very much like to see on the roof of a hybrid sedan.

All-carbon solar cell draws power from near-infrared light, our energy future is literally that much brighter originally appeared on Engadget on Fri, 22 Jun 2012 05:52:00 EDT. Please see our terms for use of feeds.

Permalink   |  sourceMIT Technology Review  | Email this | Comments

Solid state solar panels are more affordable, say researchers, don’t leak

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http://www.engadget.com/2012/05/25/northwestern-university-solid-dye-solar-cell/

Researchers at Northwestern University have found one way to stop a leak: get rid of the liquid. A new variation on the Grätzel solar cell replaces a short-lived organic dye with a solid alternative. The molecular dye the solid substance replaces was corrosive, at risk of leaking and only lasted about 18-months -- by replacing it, researchers plan to pave the way for a more affordable (and less toxic) alternative. Northwestern's new design flaunts a 10.2-percent conversion efficiency, the highest ever recorded in a solid-state solar cell of its type -- but that's still only half of what traditional sun collectors can do. Researchers hope to improve conversion in the long run, but expect that the cost reduction alone will be enough to get the party going. It may not be the greenest solar technology we've ever seen, but who are we to judge?

Solid state solar panels are more affordable, say researchers, don't leak originally appeared on Engadget on Sun, 27 May 2012 12:42:00 EDT. Please see our terms for use of feeds.

Permalink Gizmag  |  sourceNorthwestern University  | Email this | Comments

Logitech Solar Keyboard Folio for the Apple iPad is official

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Logitech announced today a new iPad keyboard case with solar power. The Logitech Solar Keyboard Folio is made for the new 2012 iPad as well as the iPad 2, the ultra-slim, book-style case and...

Researchers create incredibly thin solar cells flexible enough to wrap around a human hair

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You've probably heard that the sun is strong enough to power our planet many times over, but without a practical method of harnessing that energy, there's no way to take full advantage. An incredibly thin and light solar cell could go a long way to accomplishing that on a smaller scale, however, making the latest device from researchers from the University of Austria and the University of Tokyo a fairly significant discovery. Scientists were able to create an ultra-thin solar cell that measures just 1.9 micrometers thick -- roughly one-tenth the size of the next device. Not only is the sample slim -- composed of electrodes mounted on plastic foil, rather than glass -- it's also incredibly flexible, able to be wrapped around a single strand of human hair (which, believe it or not, is nearly 20 times thicker). The scalable cell could replace batteries in lighting, display and medical applications, and may be ready to be put to use in as few as five years. There's a bounty of physical measurement and efficiency data at the source link below, so grab those reading glasses and click on past the break.

Researchers create incredibly thin solar cells flexible enough to wrap around a human hair originally appeared on Engadget on Wed, 04 Apr 2012 13:50:00 EDT. Please see our terms for use of feeds.

Permalink PhysOrg  |  sourceNature Communications  | Email this | Comments