Efficiency record for black silicon solar cells jumps to 22.1 percent
Aalto University's researchers improved their previous record by over 3 absolute percents
Aalto University
The surface recombination has long been the bottleneck of black silicon solar cells and has so far limited the cell efficiencies to only modest values. The new record cells consists of a thick back-contacted structure that is known to be highly sensitive to the front surface recombination. The certified external quantum efficiency of 96% at 300nm wavelength demonstrates that the increased surface recombination problem no longer exists and for the first time the black silicon is not limiting the final energy conversion efficiency. The results were published in Nature Nanotechnology.
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