New Connectors Let Solar Cells Withstand The Power Of 70,000 Suns

New Connectors Let Solar Cells Withstand the Power of 70,000 Suns

The power of 1,000 suns? Pfft. That ain't nuthin'. A recent breakthrough in solar panel connections has allowed scientists to create arrays of solar cells that can stand strong under the blazing glare of 70,000 suns. Not that they'd ever have to, but still.

Stacked solar cells — which are exactly what they sound like — are some of the most efficient solar-sucking power generators on the market today. In general, they can turn just less than half of the sunlight they absorb into pure power. But stacked cell is only as strong as its weakest part; you have to connect the stacked cells in such a way that the energy doesn't get wasted in the connections. That gets especially hard under a lot of light.

Scientists at North Carolina State University recently discovered that a thin film of gallium arsenide in the solar cell junctions can stop virtually all voltage loss, and let the cells work efficiently under the power of 70,000 suns. Yeah, we only have one sun, but thanks to lenses we can beef that up to at least a few thousand in concentrated power.

Dr. Salah Bedair, a senior author of the study, described the accomplishment to PhysOrg this way:

[It] is more than sufficient for practical purposes, since concentrating lenses are unlikely to create more than 4,000 or 5,000 suns worth of energy. ...This should reduce overall costs for the energy industry because, rather than creating large, expensive solar cells, you can use much smaller cells that produce just as much electricity by absorbing intensified solar energy from concentrating lenses.

So a 70,000 sun tolerance is still pretty ridiculous unless we colonize Tatooine or something. But it's overkill in the best possible way. [PhysOrg]


Comments

    70000 suns concentrated onto 1 square meter of solar panels would be like getting 10 soccer fields worth of mirrors onto 1 panel. It would be impressive but wouldn't it melt?

    Do solar power panels generate more power when closer to the sun? Why not create a massive and ludicrously high panel (im talking miles high) that can suck up more juice?

      To get an equivalent amount of power from an array that is closer to the sun, you just have to make the one further away wider. It's cheaper to go out rather than up. The disadvantage of being on the ground is more to do with the power you lose to the atmosphere which is why I believe there a people smarter than myself thinking about orbiting solar arrays.

      Last edited 10/09/13 12:59 pm

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