May 26, 2015

BETTING ON BLACK:

BLACK SOLAR CELLS REACH INCREDIBLE NEW EFFICIENCY RECORD (Mary Beth Griggs, 5/26/15, Popular Science)

Black Silicon: Black silicon solar cells are similar to crystalline silicon solar cells. Really similar. The difference is that black silicon solar cells are treated so that they appear to be black on the surface. Why is that a big deal? Think of wearing a black T-shirt on a hot summer day. The black color tends to absorb more sunlight, which translates to an uncomfortable summer afternoon for you, but more energy gathered for a solar cell. It's an attractive option for areas that don't get as much sunlight but still want to make good use of the light they do receive. Until now, turning silicon cells black tended to undercut their efficiency at turning sunlight into power, however. That's why the new paper, showing an efficiency of 22.1 percent is promising.

Posted by at May 26, 2015 7:49 PM
  

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