Steering perovskite precursor solutions for multijunction photovoltaics

Shuaifeng Hu (), Junke Wang, Pei Zhao, Jorge Pascual, Jianan Wang, Florine Rombach, Akash Dasgupta, Wentao Liu, Minh Anh Truong, He Zhu, Manuel Kober-Czerny, James N. Drysdale, Joel A. Smith, Zhongcheng Yuan, Guus J. W. Aalbers, Nick R. M. Schipper, Jin Yao, Kyohei Nakano, Silver-Hamill Turren-Cruz, André Dallmann, M. Greyson Christoforo, James M. Ball, David P. McMeekin, Karl-Augustin Zaininger, Zonghao Liu, Nakita K. Noel, Keisuke Tajima, Wei Chen, Masahiro Ehara, René A. J. Janssen, Atsushi Wakamiya () and Henry J. Snaith ()
Additional contact information
Shuaifeng Hu: University of Oxford
Junke Wang: University of Oxford
Pei Zhao: University of Oxford
Jorge Pascual: Kyoto University
Jianan Wang: Huazhong University of Science and Technology (HUST)
Florine Rombach: University of Oxford
Akash Dasgupta: University of Oxford
Wentao Liu: Kyoto University
Minh Anh Truong: Kyoto University
He Zhu: Huazhong University of Science and Technology (HUST)
Manuel Kober-Czerny: University of Oxford
James N. Drysdale: University of Oxford
Joel A. Smith: University of Oxford
Zhongcheng Yuan: University of Oxford
Guus J. W. Aalbers: Molecular Materials and Nanosystems, Eindhoven University of Technology
Nick R. M. Schipper: Molecular Materials and Nanosystems, Eindhoven University of Technology
Jin Yao: University of Oxford
Kyohei Nakano: Wako
Silver-Hamill Turren-Cruz: Kyoto University
André Dallmann: Humboldt-Universität zu Berlin
M. Greyson Christoforo: University of Oxford
James M. Ball: University of Oxford
David P. McMeekin: University of Oxford
Karl-Augustin Zaininger: University of Oxford
Zonghao Liu: Huazhong University of Science and Technology (HUST)
Nakita K. Noel: University of Oxford
Keisuke Tajima: Wako
Wei Chen: Huazhong University of Science and Technology (HUST)
Masahiro Ehara: Institute for Molecular Science
René A. J. Janssen: Molecular Materials and Nanosystems, Eindhoven University of Technology
Atsushi Wakamiya: Kyoto University
Henry J. Snaith: University of Oxford

Nature, 2025, vol. 639, issue 8053, 93-101

Abstract: Abstract Multijunction photovoltaics (PVs) are gaining prominence owing to their superior capability of achieving power conversion efficiencies (PCEs) beyond the radiative limit of single-junction cells1–8, for which improving narrow-bandgap (NBG) tin–lead perovskites is critical for thin-film devices9. Here, with a focus on understanding the chemistry of tin–lead perovskite precursor solutions, we find that Sn(ii) species dominate interactions with precursors and additives and uncover the exclusive role of carboxylic acid in regulating solution colloidal properties and film crystallization and ammonium in improving film optoelectronic properties. Materials that combine these two functional groups, amino acid salts, considerably improve the semiconducting quality and homogeneity of perovskite films, surpassing the effect of the individual functional groups when introduced as part of separate molecules. Our enhanced tin–lead perovskite layer allows us to fabricate solar cells with PCEs of 23.9%, 29.7% (certified 29.26%) and 28.7% for single-junction, double-junction and triple-junction devices, respectively. Our 1-cm2 triple-junction devices show PCEs of 28.4% (certified 27.28%). Encapsulated triple-junction cells maintain 80% of their initial efficiencies after 860 h maximum power point tracking (MPPT) in ambient. We further fabricate quadruple-junction devices and obtain PCEs of 27.9% with the highest open-circuit voltage of 4.94 V. This work establishes a new benchmark for multijunction PVs.

Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41586-024-08546-y Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:nature:v:639:y:2025:i:8053:d:10.1038_s41586-024-08546-y

Ordering information: This journal article can be ordered from
https://www.nature.com/

DOI: 10.1038/s41586-024-08546-y

Access Statistics for this article

Nature is currently edited by Magdalena Skipper

More articles in Nature from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().