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Calixarenes enabling well-adjusted organic-inorganic interface for inverted organic solar cells with 18.25%efficiency and multifold improved photostability under max power point tracking

引用

Science China Chemistry 2023年第1期66卷 195-201页

作者： Shitong Li Zheng Xiao Juan-Juan Li Zong-Ying Hu Yang Yang Bin Kan Dong-Sheng Guo Xiangjian Wan Zhaoyang Yao Chenxi Li Yongsheng Chen State Key Laboratory of Elemento-Organic Chemistry The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsRenewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai University Tianjin300071China College of Materials Science and Engineering Nankai UniversityTianjin 300350China The Institute of Seawater Desalination and Multipurpose Utilization Ministry of Natural Resources(Tianjin)Tianjin 300192China

Compared with organic solar cells(OSCs) adopting conventional architecture,inverted OSCs have offered generally better stability,where Zn O is the most widely used electron transporting layer(ETL) *** zno-based inverted OSCs,a welltuned interface of organic(active layer)-inorganic(Zn O film) with matched surface energy(γS) is critical for both high performance and high *** this work,two typical calixarenes,C4A and Bu C4A,were employed as the tuning agents to adjust this organic-inorganic interface for zno-based inverted *** a result,with PM6:L8-BO as the active layer,significantly promoted power conversion efficiencies(PCEs) from 17.14%(for zno) to 18.25%(for zno/C4A) and 17.80%(for zno/Bu C4A) were *** studies indicate that the enhanced performance is due to the faster charge extraction process,the suppressed recombination and more ideal internal electric field in zno/calixarene-based *** addition,wellmatched interface energy and more ordered molecular aggregation in active layer effectively improved photostability and thermal stability for zno/calixarene-based *** results indicate that calixarenes could act as effective modifying agents of zno to improve inverted OSCs’ performance and stability simultaneously,and likely also stimulate calixarenes’ and other macromolecules’ broader studies in other organic electronic devices.

关键词： organic solar cell calixarenes interface adjustment zno modification high performance high stability

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