Particle decoration enables solution-processed perovskite integration with fully-textured silicon for efficient tandem solar cells
Perovskite/silicon tandem solar cells can exceed Shockley-Queisser limit, but achieving complete coverage of 2-4 μm pyramids on industrial fully-textured silicon with solution-processed perovskite film remains challenging. We address this issue by spray-coating alumina particles onto fully-textured silicon, creating a super-hydrophilic rough surface that both enhances wet film coverage and provides guided nucleation sites. Although super-hydrophilic effect enhances wetting, it alone is insufficient to achieve complete coverage of pyramids by perovskite film. Beyond enhanced wetting, alumina particles promote uniform nucleation at particle-decorated sites across pyramids by lowering nucleation barrier and suppressing valley-preferred nucleation, which enables near-conformal deposition of perovskite film on pyramids. Additionally, alumina particles reduce nonradiative recombination and extend carrier lifetimes. Using this approach, we achieve a efficiency of 32.74% for perovskite/silicon tandem solar cells with one-step solution-processed perovskite on fully-textured silicon. This strategy offers a pathway for seamless integration of perovskite and silicon photovoltaics into high-performance tandem devices.
Authors
- Naihe Liu (ORCID: https://orcid.org/0000-0003-2706-463X)
- Lijun Yang (ORCID: https://orcid.org/0000-0002-4625-4028)
- C.F. Shen (ORCID: https://orcid.org/0009-0000-1379-1313)
- Peicheng Wei
- Hangyu Gu (ORCID: https://orcid.org/0000-0003-0378-9185)
- Ying‐Jie Zhu (ORCID: https://orcid.org/0000-0002-5044-5046)
- Jinsong Huang (ORCID: https://orcid.org/0000-0002-0509-8778)
- Yuanhui Geng (ORCID: https://orcid.org/0009-0007-1556-8773)
- Kaifu Qiu (ORCID: https://orcid.org/0000-0002-2376-6928)
- Gao Zhang (ORCID: https://orcid.org/0000-0002-4665-1824)
- Yongyi Wu (ORCID: https://orcid.org/0000-0002-0089-5807)
- Xiaolei Li (ORCID: https://orcid.org/0000-0002-1648-9459)
- Bo Chen (ORCID: https://orcid.org/0000-0002-0088-8906)
- Tao Li (ORCID: https://orcid.org/0000-0002-3337-6202)
- Guan‐Jun Yang (ORCID: https://orcid.org/0000-0002-7753-3636)
- Lirong Zeng (ORCID: https://orcid.org/0009-0002-5909-5625)
- Wei Meng (ORCID: https://orcid.org/0000-0002-4346-0563)
- Xin Zhang (ORCID: https://orcid.org/0009-0006-9763-465X)
- Wei Wang (ORCID: https://orcid.org/0000-0001-8676-1190)
Institutions
- University of North Carolina at Chapel Hill (US)
- Beijing Solar Energy Research Institute (CN)
- Applied Physical Sciences (United States) (US)
- Zhejiang Energy Group (China) (CN)
- Xi'an Jiaotong University (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-10-24
- DOI
- https://doi.org/10.1038/s41467-025-64546-0
- Citations
- 4
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 2.92
Funders
- National Natural Science Foundation of China