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Sequentially Slot‐Die‐Coated Perovskite for Efficient and Scalable Solar Cells
Author(s) -
Zimmermann Iwan,
Al Atem Marc,
Fournier Olivier,
Bernard Sophie,
Jutteau Sébastien,
Lombez Laurent,
Rousset Jean
Publication year - 2021
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.202100743
Subject(s) - perovskite (structure) , materials science , deposition (geology) , energy conversion efficiency , iodide , perovskite solar cell , layer (electronics) , planar , chemical engineering , aperture (computer memory) , coating , solar cell , photovoltaic system , optoelectronics , nanotechnology , inorganic chemistry , electrical engineering , chemistry , computer science , mechanical engineering , paleontology , computer graphics (images) , sediment , engineering , biology
Development of industrially relevant thin‐film deposition processes is a necessity for upscaling the perovskite solar cell technology to commercial product‐level. This work reports on a sequential deposition method for state‐of‐the art triple cation perovskite by slot‐die coating. During this two‐step process, first, a layer of lead iodide mixed with cesium iodide is deposited, followed by applying the organic cations on top, inducing conversion to perovskite during a second slot‐die coating step. By carefully tuning the ink composition and the deposition parameters, uniform perovskite layers of 5 × 10 cm 2 are obtained. Power conversion efficiencies up to 19% for small laboratory solar cells adopting a planar device configuration and up to 15.2% for mini‐modules with an aperture area of 12 cm 2 are presented. These values are among the highest efficiencies achieved in the literature for slot‐die‐coated perovskite.