The Intertubes lit up today with news of a new, 190% efficient solar cell that could finally send fossil fuels packing once and for all. The research is still in the proof-of-concept stage, but other solar cells that shoot past the 100% mark are already in development, so anything is possible. However, if you’re thinking this blows the Shockley-Queisser theoretical limit to bits, well, guess again.limit refers to the ability of solar cells to convert sunlight to electricity.
“QE values can be quite high , and thus can be used by devious individuals to misrepresent the conversion efficiency of their solar cell device,” he concludes. The leap to 190% is something else again. To get there, Ekum and his team took a two-dimensional compound of germanium selenide and tin sulfide and stuffed it with atoms of zerovalent copper, referring to
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