Journal article
Mercapto-functionalized scaffold improves perovskite buried interfaces for tandem photovoltaics
- Abstract:
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Tandem photovoltaics hold great potential to surpass the efficiency limit of single-junction solar cells. Detrimental structural defects and chemical reactions at buried interfaces of subcells considerably impede the performance of integrated tandems. Here, we devise a mercapto-functionalized mesoporous silica layer as a superstructure at the buried interface to modulate the crystallisation, eliminate nanovoids, passivate defects, and suppress the oxidation of Sn(II) in the tin–lead perovskite films, contributing substantially to reduce charge carrier losses and improve stability in positive-intrinsic-negative structured devices. Consequently, the tin–lead perovskite single-junction cells show efficiency values of up to 23.7% with the best open-circuit voltage of 0.89 V. With the enhanced subcells, our double-junction tandems show efficiency values of 29.6% (certified 29.5% and steady-state 28.7%) and 24.7% on solar cells and 11.3 cm2 mini-modules, respectively. Encapsulated tandems maintain 90% of initial efficiency after 445 h of maximum power point tracking under simulated 1-sun illumination.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Version of record, pdf, 1.6MB, Terms of use)
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(Preview, Supplementary materials, pdf, 5.8MB, Terms of use)
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- Publisher copy:
- 10.1038/s41467-025-59891-z
Authors
- Funder identifier:
- https://ror.org/0439y7842
- Grant:
- EP/S004947/1
- EP/X038777/1
- EP/X037169/1
- EP/T028513/1
- Publisher:
- Springer Nature
- Journal:
- Nature Communications More from this journal
- Volume:
- 16
- Issue:
- 1
- Article number:
- 4917
- Publication date:
- 2025-05-27
- Acceptance date:
- 2025-05-07
- DOI:
- EISSN:
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2041-1723
- Language:
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English
- Pubs id:
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2126953
- Local pid:
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pubs:2126953
- Deposit date:
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2025-05-28
- ARK identifier:
Terms of use
- Copyright holder:
- Wang et al
- Copyright date:
- 2025
- Rights statement:
- © The Author(s), 2025. This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, which permits any non-commercial use, sharing, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if you modified the licensed material. You do not have permission under this licence to share adapted material derived from this article or parts of it. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
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