Abstract
To realize the commercialization of perovskite solar cells (PSCs), it is required to overcome the remaining challenges in device enlargement and operational stability. Here, we report an all-in-one strategy by integrating the oxidation of hole-transport material (HTM) with the formation of the passivation layer, which simultaneously solved the stability issues caused by HTM oxidation and realized the uniform defects in passivation over a large area. The resulting devices achieved a certified PCE of 23.12% on average with an aperture area of 1.04 cm2 and are reproducible with high operational stability because of the exclusion of air exposure, hygroscopic Li-TFSI, and the lithium-based wastes, maintaining ca. 90% of their initial PCEs after operation at the maximum power point under continuous 1 sun illumination for 1,600 h. Our strategy simplifies the fabrication process of PSCs, which is compatible with commercial-scale methods, offering facile access to efficient and stable large-area PSCs.
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20 September 2022
An Erratum to this paper has been published: https://doi.org/10.1007/s11426-022-1393-1
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (11834011, 12074245, 52102281, 51901132), the Young Elite Scientists Sponsorship Program by China Association for Science and Technology (2021QNRC001) and Shanghai Sailing Program (21YF1421600). This work performed at the University of Tokyo was supported by JSPS KAKENHI (JP21H02040).
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The online version of the original article can be found at https://doi.org/10.1007/s11426-022-1393-1
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Su, H., Lin, X., Wang, Y. et al. Stable perovskite solar cells with 23.12% efficiency and area over 1 cm2 by an all-in-one strategy. Sci. China Chem. 65, 1321–1329 (2022). https://doi.org/10.1007/s11426-022-1244-y
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DOI: https://doi.org/10.1007/s11426-022-1244-y