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Nonequilibrium Lattice Dynamics in Photoexcited 2D Perovskites

https://doi.org/10.1002/adma.202202709

Cuthriell, Shelby A.; Panuganti, Shobhana; Laing, Craig C.; Quintero, Michael A.; Guzelturk, Burak; Yazdani, Nuri; Traore, Boubacar; Brumberg, Alexandra; Malliakas, Christos D.; Lindenberg, Aaron M.; et al (September 2022, Advanced Materials)

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Deterministic fabrication of 3D/2D perovskite bilayer stacks for durable and efficient solar cells

https://doi.org/10.1126/science.abq7652

Sidhik, Siraj; Wang, Yafei; De Siena, Michael; Asadpour, Reza; Torma, Andrew J.; Terlier, Tanguy; Ho, Kevin; Li, Wenbin; Puthirath, Anand B.; Shuai, Xinting; et al (September 2022, Science)

Solvents enable growth of phase-pure two-dimensional perovskites without dissolving three-dimensional perovskite substrates.
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Cation Engineering in Two-Dimensional Ruddlesden–Popper Lead Iodide Perovskites with Mixed Large A-Site Cations in the Cages

https://doi.org/10.1021/jacs.9b13587

Fu, Yongping; Jiang, Xinyi; Li, Xiaotong; Traore, Boubacar; Spanopoulos, Ioannis; Katan, Claudine; Even, Jacky; Kanatzidis, Mercouri G.; Harel, Elad (February 2020, Journal of the American Chemical Society)

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Negative Pressure Engineering with Large Cage Cations in 2D Halide Perovskites Causes Lattice Softening

https://doi.org/10.1021/jacs.0c03860

Li, Xiaotong; Fu, Yongping; Pedesseau, Laurent; Guo, Peijun; Cuthriell, Shelby; Hadar, Ido; Even, Jacky; Katan, Claudine; Stoumpos, Constantinos C.; Schaller, Richard D.; et al (July 2020, Journal of the American Chemical Society)

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Two-dimensional perovskite templates for durable, efficient formamidinium perovskite solar cells

https://doi.org/10.1126/science.abq6993

Sidhik, Siraj; Metcalf, Isaac; Li, Wenbin; Kodalle, Tim; Dolan, Connor J; Khalili, Mohammad; Hou, Jin; Mandani, Faiz; Torma, Andrew; Zhang, Hao; et al (June 2024, Science)

We present a design strategy for fabricating ultrastable phase-pure films of formamidinium lead iodide (FAPbI₃) by lattice templating using specific two-dimensional (2D) perovskites with FA as the cage cation. When a pure FAPbI₃precursor solution is brought in contact with the 2D perovskite, the black phase forms preferentially at 100°C, much lower than the standard FAPbI₃annealing temperature of 150°C. X-ray diffraction and optical spectroscopy suggest that the resulting FAPbI₃film compresses slightly to acquire the (011) interplanar distances of the 2D perovskite seed. The 2D-templated bulk FAPbI₃films exhibited an efficiency of 24.1% in a p-i-n architecture with 0.5–square centimeter active area and an exceptional durability, retaining 97% of their initial efficiency after 1000 hours under 85°C and maximum power point tracking.
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