High-Performance Perovskite Single-Junction and Textured Perovskite/Silicon Tandem Solar Cells via Slot-Die-Coating
Anand S. Subbiah(King Abdullah University of Science and Technology), Furkan H. Isikgor(King Abdullah University of Science and Technology), Calvyn T. Howells(King Abdullah University of Science and Technology), Michele De Bastiani(King Abdullah University of Science and Technology), Jiang Liu(King Abdullah University of Science and Technology), Erkan Aydın(King Abdullah University of Science and Technology), Francesco Furlan(King Abdullah University of Science and Technology), Thomas G. Allen(King Abdullah University of Science and Technology), Fuzong Xu(King Abdullah University of Science and Technology), Shynggys Zhumagali(King Abdullah University of Science and Technology), Sjoerd Hoogland(University of Toronto), Edward H. Sargent(University of Toronto), Iain McCulloch(University of Oxford), Stefaan De Wolf(King Abdullah University of Science and Technology)
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Abstract
In this work, we report perovskite solar cells in the planar p–i–n configuration based on single-step, anti-solvent-free, low-temperature (70 °C) slot-die-coated methylammonium lead tri-iodide (MAPbI3). The devices are fabricated on hydrophobic poly(triarylamine) (PTAA) surfaces, using key strategies such as solvent engineering, enhanced ink–substrate dynamics, and surface passivation, enabling a power conversion efficiency (PCE) of 21.8%. We also adapted the technique to achieve the first slot-die-coated perovskite/silicon monolithic 2-terminal tandems, achieving a PCE of 23.8% utilizing a textured silicon bottom cell.
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