Journal
PROGRESS IN PHOTOVOLTAICS
Volume -, Issue -, Pages -Publisher
WILEY
DOI: 10.1002/pip.3685
Keywords
anisotropic surface etching; nano-textured silicon; passivating and carrier-selective contacts; perovskite; silicon tandem solar cells; SHJ
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Nano-textured surfaces are explored for optimizing the optical characteristics of monolithic perovskite/silicon tandem solar cells. Different textured silicon surfaces are developed using commercial additives and their performance in silicon heterojunction (SHJ) and SHJ-perovskite tandem solar cells is discussed. The nano-textured surfaces exhibit comparable or higher efficiencies than standard textured surfaces in single junctions, and they are compatible with solution-processed perovskite top cells, yielding a perovskite/silicon tandem solar cell efficiency of >28% on both sides of a nano-textured bottom cell.
Nano-textured surfaces are an intriguing approach for optimizing the optical characteristics for monolithic perovskite/silicon tandem solar cells. Here, the development of different textures of silicon surfaces using various commercial additives is presented and their performance in silicon heterojunction (SHJ) and SHJ-perovskite tandem solar cells is discussed. After optical and electrical characterization, we show that nano-textured surfaces can easily compete with standard textured surfaces, yielding higher average efficiencies in single junctions. In addition, their compatibility with solution-processed perovskite top cells is demonstrated, yielding a perovskite/silicon tandem solar cell efficiency of >28% on a bottom cell with nano-texture on both sides.
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