Affiliation:
1. College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry (IPEC) Nanchang University 999 Xuefu Avenue Nanchang 330031 China
2. School of Metallurgical and Chemical Engineering Jiangxi University of Science and Technology 156 Ke Jia Road Ganzhou 341000 China
3. Department of Energy Engineering School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 South Korea
Abstract
AbstractSingle‐component organic solar cells (SCOSCs) with covalently bonding donor and acceptor are becoming increasingly attractive because of their superior stability over traditional multicomponent blend organic solar cells (OSCs). Nevertheless, the efficiency of SCOSCs is far behind the state‐of‐the‐art multicomponent OSCs. Herein, by combination of the advantages of three‐component and single‐component devices, this work reports an innovative three‐in‐one strategy to boost the performance of SCOSCs. In this three‐in‐one strategy, three independent components (PM6, D18, and PYIT) are covalently linked together to create a new single‐component active layer based on ternary conjugated block copolymer (TCBC) PM6‐D18‐b‐PYIT by a facile polymerization. Precisely manipulating the component ratios in the polymer chains of PM6‐D18‐b‐PYIT is able to broaden light utilization, promote charge dynamics, optimize, and stabilize film morphology, contributing to the simultaneously enhanced efficiency and stability of the SCOSCs. Ultimately, the PM6‐D18‐b‐PYIT‐based device exhibits a power conversion efficiency (PCE) of 14.89%, which is the highest efficiency of the reported SCOSCs. Thanks to the aggregation restriction of each component and chain entanglement in the three‐in‐one system, the PM6‐D18‐b‐PYIT‐based SCOSC displays significantly higher stability than the corresponding two‐component (PM6‐D18:PYIT) and three‐component (PM6:D18:PYIT). These results demonstrate that the three‐in‐one strategy is facile and promising for developing SCOSCs with superior efficiency and stability.
Funder
China Scholarship Council
Natural Science Foundation of Jiangxi Province
National Natural Science Foundation of China
Cited by
7 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献