Nanoscale soft interaction-engineered perovskite heterojunctions for highly efficient and reproducible solar cells
The rational design of perovskite heterojunctions is crucial for advancing the efficiency and operational stability of perovskite solar cells (PSCs). However, conventional methods face challenges in precisely controlling interfacial phase purity at the nanoscale and achieving conformal heterojunction coverage. Herein, we report a 'soft-soft' interaction-guided strategy to tailor perovskite heterojunction formation by introducing dimethyl sulfide (DMS) as a soft Lewis base additive in the organic cation solution. The resulting DMS-modulated PSCs achieve a remarkable power conversion efficiency (PCE) of up to 26.70%, with a certified PCE of 26.48%. The devices exhibit exceptional operational stability, retaining over 94% of their initial PCE after 2000 h of maximum power point tracking under continuous 1-sun illumination (ISOS-L-1 protocol). Furthermore, the universality of this 'soft-soft' interaction strategy is validated across a range of diverse perovskite compositions and ligand systems, demonstrating its potential for scalable and reproducible PSC fabrication.
Authors
- Nicholas J. Long (ORCID: https://orcid.org/0000-0002-8298-938X)
- Bo Li (ORCID: https://orcid.org/0000-0001-7844-8161)
- Jianqiu Gong (ORCID: https://orcid.org/0000-0001-7464-1570)
- Martin Stolterfoht (ORCID: https://orcid.org/0000-0002-4023-2178)
- Danpeng Gao (ORCID: https://orcid.org/0000-0001-6633-8782)
- Shuai Li (ORCID: https://orcid.org/0000-0001-7872-0532)
- Zonglong Zhu (ORCID: https://orcid.org/0000-0002-8285-9665)
- Ning Wang (ORCID: https://orcid.org/0000-0001-9936-6843)
- Chunlei Zhang (ORCID: https://orcid.org/0000-0003-1562-1849)
- Zexin Yu (ORCID: https://orcid.org/0009-0008-5922-8954)
- Jie Gong (ORCID: https://orcid.org/0009-0007-6327-0015)
- Yen‐Hung Lin (ORCID: https://orcid.org/0000-0001-6819-1235)
- Francesco Vanin (ORCID: https://orcid.org/0009-0003-3581-3642)
- Liangchen Qian
Institutions
- Central South University (CN)
- City University of Hong Kong (HK)
- Chinese University of Hong Kong (HK)
- Hong Kong University of Science and Technology (HK)
- City University of Hong Kong, Shenzhen Research Institute (CN)
- Imperial College London (GB)
- University of Hong Kong (HK)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-10-28
- DOI
- https://doi.org/10.1038/s41467-025-64550-4
- Citations
- 1
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.73