Robust Organic Photovoltaic Ternary Strategy Pairing Tunable Wide‐Bandgap Perovskites for Efficient Perovskite/Organic Tandems
Abstract
Abstract Perovskite/organic tandem solar cells (P/OTSCs) have attracted wide attention. However, insufficient near‐infrared absorption of organic bottom subcells and poor compatibility with perovskite top subcells restrict their further development. Here, a ternary strategy of combining near‐infrared‐absorbing mBZS‐4F and crystalline L8‐BO as mixed acceptors along with D18 donor is proposed to form an organic bottom absorber. This approach effectively extended the near‐infrared absorption to 970 nm while maintaining low voltage loss (0.54 eV). By adjusting the L8‐BO:mBZS‐4F ratio to 2:1, a high‐performance OSC is achieved with a remarkable power conversion efficiency (PCE) of 20.42% and an outstanding fill factor (FF) of 81.25%. This combination strategy exhibits robust compatibility with a 1.80, 1.86, and 1.88 eV wide‐bandgap perovskite top subcell, enabling their corresponding P/OTSCs with PCEs of 25.82, 25.50, and 26.08%, respectively. The work suggests that such a ternary strategy not only benefits single‐junction OSC performance but also suits a wide range of wide‐bandgap perovskite subcells for efficient P/OTSCs.
Article Details
Authors (18)
Nan Wei
College of Textiles & Clothing, State Key Laboratory of Bio-fibers and Eco-textiles
Zhiyu Gao
College of Materials Science and Engineering & Engineering Research Center of Alternative Energy Materials and Devices, Ministry of Education
Feng Qi
Haoming Song
Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry Beijing Normal University Beijing 100875 China
Bohan Shang
College of Materials Science and Engineering Qingdao University Qingdao 266071 P. R. China
Xuelin Wang
Jieni Chen
Department of Physics and Applied Optics Beijing Area Major Laboratory Beijing Normal University Beijing 100875 China
Xiangmeng Deng
Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry Beijing Normal University Beijing 100875 China
Xinyue Cui
Yuqiang Liu
Science Island Branch of Graduate School
Zheng Tang
Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences
Wenkai Zhang
School of Physics and Astronomy, Applied Optics Beijing Area Major Laboratory, Center for Advanced Quantum Studies
Huawei Hu
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering
Yahui Liu
College of Textiles & Clothing, State Key Laboratory of Bio-fibers and Eco-textiles
Hao Lu
State Key Laboratory of Macromolecular Drugs and Large-scale Preparation, School of Pharmaceutical Sciences
Cong Chen
BLSA-ZJU Research Center and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China.
Dewei Zhao
Zhishan Bo
College of Textiles & Clothing, State Key Laboratory of Bio-fibers and Eco-textiles