Energy & Green Tech news

Tandem solar cells are more efficient

Stacking two solar cells one over the other has advantages: Because the energy is "harvested" in two stages, and overall the sunlight can be converted to electricity more efficiently. Empa researchers have come up with a ...

dateNov 23, 2015 in Energy & Green Tech
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On the way to multiband solar cells

When visiting California's central valley in the summertime, it's hard to imagine that solar energy isn't single-handedly meeting the west coast's energy needs. But one problem with modern solar cells is that while the solar ...

dateNov 12, 2015 in Energy & Green Tech
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