Breaking the Efficiency‐Stability‐Sustainability Trilemma in all‐perovskite Tandem Solar Modules via Oxidative Blockchain Molecular Engineering
Abstract
Abstract Narrow‐bandgap (NBG) tin‐lead (Sn ‐ Pb) perovskites are vital for all‐perovskite tandem solar modules (TSMs), yet their commercialization remains limited by challenges in balancing efficiency, stability, and sustainability. Here, we presented an oxidation‐triggered blockchain molecular (BCM) interface engineering strategy, which modified the poly (3,4‐ethylenedioxythiophene):poly (styrene sulfonate) (PEDOT:PSS) surface and constructed a dynamic functional layer at the buried PEDOT:PSS/Sn‐Pb perovskite interface through synergistic effects of biocompatible rutin molecules and their oxidation derivatives. This approach enabled full‐cycle optimization from film formation to operational longevity via sequential regulation of crystallization and carrier dynamics, along with persistent defect passivation through synergistic coordination and hydrogen bonding. Resulting NBG devices achieved champion efficiencies of 23.50% (0.045 cm 2 ) and 17.10% (10.4 cm 2 ), respectively. The all‐perovskite TSMs (10.4 cm 2 ) attained a 23.00% aperture efficiency (an active‐area efficiency of 24.30%) and retained ∼90% efficiency after 640 h of continuous illumination (extrapolated T PCE80 lifetime of 3900 h) and after 15 cycles of day ‐ night fatigue tests. Additionally, BCM's dual protection effects (physical barrier and chemical chelation) reduced lead leakage of severely damaged TSMs by 90% under simulated heavy rainfall, demonstrating strong environmental resilience. This work offers a scalable molecular strategy for advancing perovskite photovoltaics from lab‐scale innovation to industrial viability.
Article Details
Authors (23)
Guo Yang
Jinglin Sun
Xueqing Chang
Chao Yu
NHC Key Laboratory of Biotechnology for Microbial Drugs, State Key Laboratory of Bioactive Substance & Function of Natural Medicines, Institute of Medicinal Biotechnology
Gengling Liu
College of Chemistry and Chemical Engineering Gannan Normal University Ganzhou Jiangxi China
Yuxuan Fang
Huanyu Chen
Yu‐Hua Huang
Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education LIFM School of Chemistry IGCME Sun Yat‐Sen University Guangzhou 510275 P. R. China
Hong Liu
Jun Fang
Lixiang Wang
State Key Laboratory of Polymer Science and Technology Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun Jilin P.R. China
Ying Tan
Department of Medicinal Chemistry
Wenhuai Feng
Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education LIFM School of Chemistry IGCME Sun Yat‐Sen University Guangzhou 510275 P. R. China
Meifang Yang
Yongbin Feng
Jun‐Xing Zhong
School of Chemistry and Materials Science Guangdong University of Education Guangzhou P. R. China
Dilbara Gulamova
Uzbekistan Academy of Sciences Institute of Material Sciences Chingiz Aytmatov str.2B Tashkent 100084 Uzbekistan
Yanjun Fang
Congcong Wu
Longbin Qiu
Xu‐Dong Wang
Beijing National Laboratory for Molecular Sciences Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing China
Zhibin Yang
Wu‐Qiang Wu
Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, School of Chemistry, IGCME Sun Yat‐sen University Guangzhou P. R. China