Journal article
Water- and heat-activated dynamic passivation for perovskite photovoltaics
- Abstract:
- Further improvements in perovskite solar cells require better control of ionic defects in the perovskite photoactive layer during the manufacturing stage and their usage. Here we report a living passivation strategy using a hindered urea/thiocarbamate bond Lewis acid–base material (HUBLA), where dynamic covalent bonds with water and heat-activated characteristics can dynamically heal the perovskite to ensure device performance and stability. Upon exposure to moisture or heat, HUBLA generates new agents and further passivates defects in the perovskite. This passivation strategy achieved high-performance devices with a power conversion efficiency (PCE) of 25.1 per cent. HUBLA devices retained 94 per cent of their initial PCE for approximately 1,500 hours of ageing at 85 degrees Celsius in nitrogen and maintained 88 per cent of their initial PCE after 1,000 hours of ageing at 85 degrees Celsius and 30 per cent relative humidity in air.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 2.6MB, Terms of use)
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(Preview, Supplementary materials, pdf, 8.2MB, Terms of use)
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- Publisher copy:
- 10.1038/s41586-024-07705-5
Authors
- Publisher:
- Springer Nature
- Journal:
- Nature More from this journal
- Volume:
- 632
- Issue:
- 8024
- Pages:
- 294–300
- Place of publication:
- England
- Publication date:
- 2024-06-24
- Acceptance date:
- 2024-06-11
- DOI:
- EISSN:
-
1476-4687
- ISSN:
-
0028-0836
- Pmid:
-
38914114
- Language:
-
English
- Pubs id:
-
2009985
- Local pid:
-
pubs:2009985
- Deposit date:
-
2024-08-01
Terms of use
- Copyright holder:
- Wang et al
- Copyright date:
- 2024
- Rights statement:
- © The Author(s) 2024. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, 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 changes were made. 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.
- Licence:
- CC Attribution (CC BY)
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