Dihydrazide-Mediated Crystal Engineering and Precursor Anti-Aging for Efficient and Stable Perovskite Solar Cells and Modules
Wei H. Chen R. Yang Y. Wang R. Wang K. Wan S. Lu H. Dai Z. Hu W. Fan L. Dosmukhambetova A. Kadyrma D. Mukhametkarimov Y. Kalkozova Z. Liu Z. Wang H.
19 January 2026John Wiley and Sons Inc
Advanced Functional Materials
2026#36Issue 6
Commercialization of perovskite solar cells (PSCs) is hindered by challenges in crystallization control, long-term operational stability, and precursor degradation. Here, a multifunctional molecule, isophthaloyl dihydrazide (BDH), is introduced to simultaneously address these issues in inverted PSCs. BDH facilitates preferential crystallization via dual-site coordination with perovskite, resulting in improved crystallinity, suppressed non-radiative recombination, and enhanced charge transport. Its carbonyl groups effectively passivate uncoordinated Pb2+ ions, while the hydrazide functionality suppresses iodide oxidation in both solution and solid-state phases. This redox-stabilizing effect significantly extends the ambient shelf life of perovskite precursor inks to four weeks without compromising device performance. Consequently, BDH-modified devices deliver an impressive efficiency of 25.78%, retaining 94.6% of their initial value after 1000 h of maximum power point tracking and showing no degradation across nine light-dark cycles. Notably, the mini-modules (aperture area of 26.78 cm2) achieve a high efficiency of 22.30% and excellent stability.
anti-aging precursor , crystallization orientation , dihydrazide , large-area modules , perovskite solar cells
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State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xian, 710072, China
Institute of International Rivers and ECO-Security, Southwest United Graduate School, Yunnan University, Kunming, 650504, China
State Key Laboratory of Flexible Electronics & Institute of Advanced Materials, School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing, 211816, China
PowerChina Northwest Engineer Corporation Limited, Xi′an, 710065, China
Faculty of Physics and Technology, Al-Farabi, Kazakh National University, Almaty, 050040, Kazakhstan
State Key Laboratory of Solidification Processing
Institute of International Rivers and ECO-Security
State Key Laboratory of Flexible Electronics & Institute of Advanced Materials
PowerChina Northwest Engineer Corporation Limited
Faculty of Physics and Technology
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