Futuristic device is helping scientists break solar-efficiency record

Ariel Bogle for Yahoo News:  Looking a little like the world-saving stones from sci-fi classic The Fifth Element, a new device is expected to have a big impact on renewable energy.

Built by Mark Keevers and Martin Green from the University of New South Wales (UNSW), the unique prism could help make solar panels cheaper and more efficient. In fact, it's already broken a world record for the amount of solar energy it can create from unfocused sunlight.

The prism has a sunlight-to-electricity conversion efficiency rate of 34.5 percent, Keevers told Mashable Australia. That's about a 44 percent improvement in efficiency on the previous record, he said, which sat at 24 percent efficiency but over 800 square centimetres (124 square inches). The UNSW team's record was achieved over a smaller surface area of 28 square centimetres (4.34 square inches).

Importantly, it does this with normal, un-concentrated light — the type household solar panels already use.  Cont'd...

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