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Light can "heal" defects in some solar cells

May 25, 2016

Defects in some new electronic materials can be removed by making ions move under illumination.

MIT-Perovskite-Film_0.jpgA sample of the mineral perovskite is shown in the foreground, while behind it is an image the researchers used to prove the effects of intense light on a thin film of perovskite. Fluorescence imaging shows that areas that received more light became more purified, as revealed by brighter fluorescence from those regions.

Image: MIT News. Fluorescence image courtesy of the researchers.

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