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| High-performance nonfused ring electron acceptor with a steric hindrance induced planar molecular backbone | |
| 作者姓名： | Hao Lu Xiaodong Wang Hang Wang Andong Zhang Xinming Zheng Na Yu Zheng Tang Xinjun Xu Yahui Liu Ya-Nan Chen Zhishan Bo |
| 作者单位： | College of Textiles&Clothing;Beijing Key Laboratory of Energy Conversion and Storage Materials;Center for Advanced Low-Dimension Materials |
| 基金项目： | supported by the National Natural Science Foundation of China (51933001, 21734009)。 |
| 摘 要： | Three nonfused ring electron acceptors (NFREAs) TTC6,TT-C8T and TT-TC8 were purposefully designed and synthesized.The molecular geometry can be adjusted by the steric hindrance of lateral substituents.According to the DFT calculations,from TTC6 to TT-C8T and TT-TC8,planarity of the molecular backbone is gradually improved,accompanying with the enhancing of intramolecular charge transfer effect.As for TT-TC8,the two phenyl substituents are almost perpendicular to the molecular backbone,which endues the acceptor with good solubility and suppresses it to form over-aggregation.Multidirectional regular molecular orientation and closer molecular stacking are formed in TT-TC8 film.As a result,TT-TC8 based devices afford the highest PCE of 13.13%,which is much higher than that of TTC6 (4.41%) and TT-C8T (10.42%) and among the highest PCE values based on NFREAs. |
| 关 键 词： | organic solar cells nonfused ring electron acceptors nonfullerene acceptors steric hindrance |
High-performance nonfused ring electron acceptor with a steric hindrance induced planar molecular backbone |
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| Hao Lu,Xiaodong Wang,Hang Wang,Andong Zhang,Xinming Zheng,Na Yu,Zheng Tang,Xinjun Xu,Yahui Liu,Ya-Nan Chen,Zhishan Bo.High-performance nonfused ring electron acceptor with a steric hindrance induced planar molecular backbone[J].中国科学 化学(英文版),2022,65(3):594-601. | |
| Authors: | Lu Hao Wang Xiaodong Wang Hang Zhang Andong Zheng Xinming Yu Na Tang Zheng Xu Xinjun Liu Yahui Chen Ya-Nan Bo Zhishan |
| Institution: | 1.College of Textiles & Clothing, State Key Laboratory of Bio-fibers and Eco-textiles, Qingdao University, Qingdao, 266071, China ;2.Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China ;3.Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China ; |
| Abstract: | Science China Chemistry - Three nonfused ring electron acceptors (NFREAs) TTC6, TT-C8T and TT-TC8 were purposefully designed and synthesized. The molecular geometry can be adjusted by the steric... |
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