Rationally designed universal passivator for high-performance single-junction and tandem perovskite solar cells
Interfacial trap-assisted nonradiative recombination hampers the development of metal halide perovskite solar cells (PSCs). Herein, we report a rationally designed universal passivator to realize highly efficient and stable single junction and tandem PSCs. Multiple defects are simultaneously passivated by the synergistic effect of anion and cation. Moreover, the defect healing effect is precisely modulated by carefully controlling the number of hydrogen atoms on cations and steric hindrance. Due to minimized interfacial energy loss, L-valine benzyl ester p-toluenesulfonate (VBETS) modified inverted PSCs deliver a power conversion efficiency (PCE) of 26.28% using vacuum flash processing technology. Moreover, by suppressing carrier recombination, the large-area modules with an aperture area of 32.144 cm<sup>2</sup> and perovskite/Si tandem solar cells coupled with VBETS passivation deliver a PCE of 21.00% and 30.98%, respectively. This work highlights the critical role of the number of hydrogen atoms and steric hindrance in designing molecular modulators to advance the PCE and stability of PSCs.
Authors
- Jiangzhao Chen (ORCID: https://orcid.org/0000-0002-9066-7217)
- Zuolin Zhang (ORCID: https://orcid.org/0009-0004-7730-4480)
- Boxue Zhang (ORCID: https://orcid.org/0000-0002-9420-3604)
- Thierry Pauporté (ORCID: https://orcid.org/0000-0001-5906-8075)
- Jianxin Tang (ORCID: https://orcid.org/0000-0002-6813-0448)
- Jiajia Zhang (ORCID: https://orcid.org/0000-0002-0163-1360)
- Taoran Geng
- Hong Zhang (ORCID: https://orcid.org/0000-0002-5321-0680)
- Jike Ding
- Quanxing Ma
- Hongjian Chen (ORCID: https://orcid.org/0009-0001-4537-9822)
- Yinsu Feng
- Cong Chen (ORCID: https://orcid.org/0000-0003-2692-1871)
- Mengjia Li (ORCID: https://orcid.org/0000-0003-2124-500X)
- Yang Wang (ORCID: https://orcid.org/0000-0003-4480-1785)
- Wenhuan Gao
Institutions
- Kunming University of Science and Technology (CN)
- Macau University of Science and Technology (MO)
- Centre National de la Recherche Scientifique (FR)
- Fuyang Normal University (CN)
- Chimie ParisTech - PSL (FR)
- Hebei University of Technology (CN)
- Chinese Academy of Sciences (CN)
- University of Macau (MO)
- Fudan University (CN)
- Université Paris Sciences et Lettres (FR)
- Beijing National Laboratory for Molecular Sciences (CN)
- Institut de Recherche de Chimie Paris (FR)
- Institute of Chemistry (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-01-16
- DOI
- https://doi.org/10.1038/s41467-025-56068-6
- Citations
- 58
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 42.37
Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- Natural Science Foundation of Hebei Province
- Youth Innovation Promotion Association of the Chinese Academy of Sciences
- Youth Innovation Promotion Association