The efficiencies of small-pixel perovskite photovoltaics have increased to above 24%, while most reported fabrication methods cannot be transferred to scalable manufacturing process. Here, we report a method of fast blading large-area perovskite films at an unprecedented speed of 99 mm/s under ambient conditions by tailoring solvent coordination capability. Combing volatile noncoordinating solvents to Pb and low-volatile, coordinating solvents achieves both fast drying and large perovskite grains at room temperature. The reproducible fabrication yields a certified module efficiency of 16.4%, with an aperture area of 63.7 cm. This method can be applied for various perovskite compositions. The perovskite modules also show a small temperature coefficient of -0.13%/°C and nearly fully recoverable efficiency after 58 cycles of shading, much better than commercial silicon and thin-film solar modules.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6897546 | PMC |
| http://dx.doi.org/10.1126/sciadv.aax7537 | DOI Listing |
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