An anonymous reader writes: In the world of photovoltaics, fights break out over fractions of a percent improvement. And there's usually a gap between "hero device" lab results and manufacturable devices. But now a small startup called Solar Junction has reached 43.5%, confirmed by the National Renewable Energy Lab. This beats the old record by a full 1.2%. It's grown on a on a high volume manufacturing system, too... or at least high volume for the world of CPV.
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