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We experimentally demonstrate highly efficient light-trapping structures that is achieved by breaking the symmetry in inverted nanopyramids on c-Si. The fabrication of these structures is cost-effective and scalable. Our optical measurement for the structures on 10-μm-thick c-Si cells shows the Shockley-Queisser efficiency of 27.9%. We further fabricate plasmonic metal structures on the symmetry-breaking...
We introduce a manufacturable method to break the symmetry in inverted nanopyramids on c-Si. This method broadly enhances light trapping and would increase the efficiency from 25 to 26.4% for thick c-Si cells. We further use the nanopyramids as a template to deposit plasmonic metal structures and demonstrate enhanced light absorption in organic solar cells. The enhancement exceeds 100% in some cases...
Only ten micrometer thick crystalline silicon solar cells deliver a short‐circuit current of 34.5 mA cm−2 and power conversion efficiency of 15.7%. The record performance for a crystalline silicon solar cell of such thinness is enabled by an advanced light‐trapping design incorporating a 2D inverted pyramid photonic crystal and a rear dielectric/reflector stack.
Crystalline silicon solar cells, only 10 μm thick, with a peak conversion efficiency of 15.7% are reported by G. Chen and co‐workers on page 2182. Efficient crystalline silicon photovoltaics of such thinness are enabled by an advanced light‐trapping design incorporating a two‐dimensional inverted pyramid photonic crystal.
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