Powerful Ideas: Spray-On Solar Cells

So far, they have developed solar-cell prototypes that can convert 1 percent of the sunlight that hits the cell into electricity.

"If we get to 10 percent, then there's real potential for commercialization," said Korgel, who co-founded the Calif.-based company Innovalight, which is currently producing silicon-based inks. "If it works, I think you could see it being used in three to five years."


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