Inorganic CsSnI3 Perovskite Solar Cells with an Efficiency above 13.6%
Source abstract
Abstract
Due to the high Lewis acidity of Sn 2+, it is a major challenge to prepare high-quality CsSnI 3 films. To solve this critical problem, here we propose a pseudohalide anion alloying process to regulate the crystallization of inorganic CsSnI 3 perovskite and achieve large grain sizes in the micron range. The introduction of a pseudohalide anion changes the phase transition pathways through the formation of intermediates, thereby slowing the rate of CsSnI 3 crystallization. The substitutional alloying of HCOO – in the CsSnI 3 crystal lattice further improves the oxidation resistance of Sn 2+ due to the strong bonding between the HCOO – anions and Sn 2+ cations. The fabricated CsSnI 3 -based planar perovskite solar cell with an inverted configuration and active area of 4.05 mm 2 exhibits certified power conversion efficiency of 13.68% at AM 1.5 solar irradiation (100 mW cm –2 ), which is among the best reported for CsSnI 3 -based inorganic perovskite cells.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Perovskite Materials and Applications · Chalcogenide Semiconductor Thin Films · Solid-state spectroscopy and crystallography
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, P.R. China
Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, P.R. China
Faculty of Engineering and Environment, University of Northumbria at Newcastle, Newcastle upon Tyne, NE1 8ST, United Kingdom
Optics Valley Laboratory, Wuhan, Hubei 430074, P.R. China
Funding
Royal Society · National Key Research and Development Program of China · China Postdoctoral Science Foundation · National Natural Science Foundation of China · Hubei Province International Science and Technology Cooperation Project · Innovation Project of Optics Valley Laboratory
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