Modulating Crystallization and Suppressing Phase Segregation in Wide-Bandgap Perovskite Absorbers toward Silicon-Based Tandem Solar Cells
Wide-bandgap (WBG) perovskite solar cells are essential components in tandem photovoltaics. However, the high bromide content in WBG perovskites often leads to complex crystallization processes and poor film quality. Additionally, light-induced phase segregation further constrains the performance and long-term stability of WBG solar cells. To address these challenges, two-dimensional (2D) PMAPbI4 (PAI, 4-pyridinylmethylammonium iodide) perovskite was introduced to modulate the crystallization process of WBG perovskites. The strong interaction between PAI and the three-dimensional (3D) perovskite components slows down the crystallization rate, resulting in enhanced crystal quality and suppressed halide ion segregation. This strategy substantially enhances the photovoltage within a broad bandgap range spanning from 1.67 to 1.85 eV. Moreover, a monolithic two-terminal perovskite/silicon tandem solar cell demonstrates an efficiency of 32.11%. Overall, this study offers comprehensive insights into controlling WBG perovskite crystallization and establishes a foundation for future progress in tandem photovoltaic technologies.
Authors
- Jingjin Dong (ORCID: https://orcid.org/0000-0002-2406-504X)
- Mingjun Hu (ORCID: https://orcid.org/0000-0002-5474-6022)
- Aifei Wang (ORCID: https://orcid.org/0000-0002-0845-5005)
- Tianshi Qin (ORCID: https://orcid.org/0000-0002-2084-3537)
- Xunlei Yan
- Jiupeng Cao (ORCID: https://orcid.org/0000-0003-1314-0937)
- Xinyu Zhang (ORCID: https://orcid.org/0000-0002-3635-7015)
- Jin Xiao (ORCID: https://orcid.org/0000-0002-9244-7859)
- Jungan Wang (ORCID: https://orcid.org/0009-0009-7424-5012)
- Jihai Duan (ORCID: https://orcid.org/0000-0002-3586-7267)
- Wei Huang (ORCID: https://orcid.org/0000-0001-7004-6408)
- Fangfang Wang (ORCID: https://orcid.org/0000-0002-9943-2289)
- Huihui Zhang
- Wenjian Yan (ORCID: https://orcid.org/0009-0000-2266-1086)
- Menglei Xu (ORCID: https://orcid.org/0000-0002-3422-9984)
- Lujia Han (ORCID: https://orcid.org/0009-0008-4720-8948)
- Shunan Sui
- Jie Yang (ORCID: https://orcid.org/0000-0003-0641-6296)
Institutions
- Nanjing Tech University (CN)
- Sun Yat-sen University (CN)
- Integrated Optoelectronics (Norway) (NO)
- Beijing Solar Energy Research Institute (CN)
- Energy Foundation (CN)
- Green Technology (US)
- The Synergetic Innovation Center for Advanced Materials (CN)
- Zhejiang University of Technology (CN)
Publication Details
- Journal
- ACS Energy Letters
- Published
- 2025-12-12
- DOI
- https://doi.org/10.1021/acsenergylett.5c03383
- Citations
- 5
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 3.65