Light can ‘heal’ defects in some solar cells

Tiny defects in perovskite’s crystalline structure can hamper the conversion of light into electricity in a solar cell, but “what we’re finding is that there are some defects that can be healed under light,” says Stranks, who is a Marie Curie Fellow jointly at MIT and Cambridge University in the U.K. The tiny defects, called traps, can cause electrons to recombine with atoms before the electrons can reach a place in the crystal where their motion can be harnessed.

http://m.phys.org/news/2016-05-defects-solar-cells.html?utm_source=nwletter&utm_medium=email&utm_campaign=daily-nwletter

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