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

Sidhik, Siraj; Metcalf, Isaac; Li, Wenbin; Kodalle, Tim; Dolan, Connor J.; Khalili, Mohammad; Hou, Jin; Mandani, Faiz; Torma, Andrew; Zhang, Hao; Garai, Rabindranath; Persaud, Jessica; Marciel, Amanda; Muro Puente, Itzel Alejandra; Reddy, G. N. Manjunatha; Balvanz, Adam; Alam, Muhammad A.; Katan, Claudine; Tsai, Esther; Ginger, David; Fenning, David P.; Kanatzidis, Mercouri G.; Sutter-Fella, Carolin M.; Even, Jacky; Mohite, Aditya D.

doi:10.1126/science.abq6993

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

Journal Article · 13 June 2024 · Science

DOI: https://doi.org/10.1126/science.abq6993 · OSTI ID:2376158

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Rice University, Houston, TX (United States)
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
University of California, San Diego, La Jolla, CA (United States)
University of Lille (France)
Northwestern University, Evanston, IL (United States)
Purdue University, West Lafayette, IN (United States)
Université Rennes (France)
Brookhaven National Laboratory (BNL), Upton, NY (United States)
University of Washington, Seattle, WA (United States)
Université Rennes (France)

We present a design strategy for fabricating ultrastable phase-pure films of formamidinium lead iodide (FAPbI 3 ) by lattice templating using specific two-dimensional (2D) perovskites with FA as the cage cation. When a pure FAPbI 3 precursor solution is brought in contact with the 2D perovskite, the black phase forms preferentially at 100°C, much lower than the standard FAPbI 3 annealing temperature of 150°C. X-ray diffraction and optical spectroscopy suggest that the resulting FAPbI 3 film compresses slightly to acquire the (011) interplanar distances of the 2D perovskite seed. The 2D-templated bulk FAPbI 3 films 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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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)

Grant/Contract Number:: AC02-05CH11231; SC0012704; AC02-06CH11357

OSTI ID:: 2376158

Alternate ID(s):: OSTI ID: 2403448

Report Number(s):: BNL-225821-2024-JAAM; ark:/13030/qt05d359b4

Journal Information:: Science, Vol. 384, Issue 6701; ISSN 0036-8075

Publisher:: AAASCopyright Statement

Country of Publication:: United States

Language:: English

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