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Simultaneous lattice engineering and defect control via cadmium incorporation for high‐performance inorganic perovskite solar cells
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Xu, Tianfei, Xiang, Wanchun, Kubicki, Dominik J., Liu, Yali, Tress, Wolfgang and Liu, Shengzhong (2022) Simultaneous lattice engineering and defect control via cadmium incorporation for high‐performance inorganic perovskite solar cells. Advanced Science . 2204486. doi:10.1002/advs.202204486 ISSN 2198-3844.
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Official URL: https://doi.org/10.1002/advs.202204486
Abstract
Doping of all‐inorganic lead halide perovskites to enhance their photovoltaic performance and stability has been reported to be effective. Up to now most studies have focused on the doping of elements in to the perovskite lattice. However, most of them cannot be doped into the perovskite lattice and the roles of these dopants are still controversial. Herein,the authors introduce CdI2 as an additive into CsPbI3−xBr x and use it as active layer to fabricate high‐performance inorganic perovskite solar cells (PSCs). Cd with a smaller radius than Pb can partially substitute Pb in the perovskite lattice by up to 2 mol%. Meanwhile, the remaining Cd stays on the surface and grain boundaries (GB) of the perovskite film in the form of Cs2CdI4−xBr−x, which is found to reduce non‐radiative recombination. These effects result in prolonged charge carrier lifetime, suppressed defect formation, decreased GBs, and an upward shift of energybands in the Cd‐containing film. A champion efficiency of 20.8% is achieved for Cd‐incorporated PSCs, together with improved device ambient stability. This work highlights the importance of simultaneous lattice engineering, defectcontrol and atomic‐level characterization in achieving high‐performance inorganic PSCs with well‐defined structure‐property relationships.
Item Type: | Journal Article | |||||||||||||||||||||
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Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||
SWORD Depositor: | Library Publications Router | |||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Perovskite materials, Perovskite (Mineral) -- Industrial applications, Photovoltaic cells -- Materials, Perovskite solar cells | |||||||||||||||||||||
Journal or Publication Title: | Advanced Science | |||||||||||||||||||||
Publisher: | Wiley - V C H Verlag GmbH & Co. KGaA | |||||||||||||||||||||
ISSN: | 2198-3844 | |||||||||||||||||||||
Official Date: | 7 November 2022 | |||||||||||||||||||||
Dates: |
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Article Number: | 2204486 | |||||||||||||||||||||
DOI: | 10.1002/advs.202204486 | |||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||
Date of first compliant deposit: | 5 December 2022 | |||||||||||||||||||||
Date of first compliant Open Access: | 5 December 2022 | |||||||||||||||||||||
RIOXX Funder/Project Grant: |
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