Transparent Solar-Cell Screen Charges Phone

Today’s mobile devices are constantly in use—so constantly that battery life is a huge problem. I recently hosted an afternoon barbecue at a community pool; over in one corner, folks jockeyed for a turn to charge their mobile devices at the one available outlet. Meanwhile, the sun shone down brightly on mobile phones scattered across the picnic tables, as the batteries on those idle devices quietly drained. More: Discovery News.

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