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multi-junction cells


New solar cells achieve 40% conversion efficiency

Scientists at a Boeing subsidiary have developed a new type of photovoltaic cell that has surpassed an energy conversion efficiency of more than forty percent for the first time. Instead of the usual single-junction silicon cells, Spectrolab scientists have fabricated multi-junction cells. The advantage is that multi-junction cells can absorb many more of the frequencies that are available in sunlight. This has allowed them to achieve a conversion efficiency of 40.7 percent. The theoretical limit of single junction cells is only 37 percent and ... Read more →

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