Engineers have used inexpensive materials to create a solar cell certified at a world-record 7.0 percent efficiency.
“Previously, quantum dot solar cells have been limited by the large internal surface areas of the nanoparticles in the film, which made extracting electricity difficult,” says Susanna Thon of the University of Toronto.
“Our breakthrough was to use a combination of organic and inorganic chemistry to completely cover all of the exposed surfaces.”
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Photo credit: U. Toronto