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首页> 外文期刊>Advanced Functional Materials >Imide-Functionalized Heteroarene-Based n-Type Terpolymers Incorporating Intramolecular Noncovalent Sulfur…Oxygen Interactions for Additive-Free All-Polymer Solar Cells
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Imide-Functionalized Heteroarene-Based n-Type Terpolymers Incorporating Intramolecular Noncovalent Sulfur…Oxygen Interactions for Additive-Free All-Polymer Solar Cells

机译：酰亚胺功能化杂芳基n型三元共聚物，结合了分子内非共价硫…氧相互作用，无添加剂的全聚合物太阳能电池

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摘要

The aggregation/crystallinity of classic n-type terpolymers based on naphthalene diimide and perylene diimide is challenging to tune due to their rigid and extended cores, leading to suboptimal film morphology. A new strategy for developing high-performance n-type terpolymers by incorporating imide-functionalized heteroarenes is reported here to balance crystallinity and miscibility without sacrificing charge carrier mobilities. The introduction of thienopyrroledione (TPD) into the copolymer f-BTI2-FT results in a series of terpolymers BTI2-xTPD having distinct TPD content. The irregular backbone reduces crystallinity, yielding improved miscibility with the polymer donor. More importantly, TPD triggers noncovalent SMIDLINE HORIZONTAL ELLIPSISO interactions, increasing backbone planarity and in-chain charge transport. Such interactions also promote face-on polymer packing. As a result, all-polymer solar cells (all-PSCs) based on BTI2-30TPD achieve an optimal power conversion efficiency (PCE) of 8.28% with a small energy loss (0.53 eV). This efficiency is substantially higher than that of TPD (4.4%) or a BTI2-based copolymer (6.8%) and is also the highest for additive-free all-PSCs based on a terpolymer acceptor. Moreover, the BTI2-30TPD cell exhibits excellent stability with the PCE retaining 90% of its initial value after 400 h of aging. The results demonstrate that random polymerization using imide-functionalized heteroarenes is a powerful approach to develop terpolymer acceptors toward efficient and stable all-polymer solar cell PSCs.
机译：基于萘二酰亚胺和per二酰亚胺的经典n型三元共聚物的聚集/结晶度因其刚性和延伸核而难以调整，导致膜形态欠佳。本文报道了通过结合酰亚胺官能化的杂芳烃开发高性能n型三元共聚物的新策略，可在不牺牲电荷载流子迁移率的情况下平衡结晶度和混溶性。将噻吩并吡咯烷酮（TPD）引入共聚物f-BTI2-FT中会导致一系列具有不同TPD含量的三元共聚物BTI2-xTPD。不规则的主链降低了结晶度，从而改善了与聚合物供体的混溶性。更重要的是，TPD触发了非共价SMIDLINE HOLZONTAL ELLIPSISO相互作用，从而增加了主链的平面性和链内电荷传输。这种相互作用也促进了面对面的聚合物堆积。结果，基于BTI2-30TPD的全聚合物太阳能电池（all-PSC）实现了8.28％的最佳功率转换效率（PCE），并且能量损失很小（0.53 eV）。该效率显着高于TPD（4.4％）或BTI2基共聚物（6.8％），对于基于三元共聚物受体的无添加剂全PSC也是最高的。此外，BTI2-30TPD电池表现出出色的稳定性，在老化400小时后，PCE保持其初始值的90％。结果表明，使用酰亚胺官能化的杂芳烃进行无规聚合是开发三元共聚物受体的有效方法，以实现高效，稳定的全聚合物太阳能电池PSC。

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  • 来源
    《Advanced Functional Materials》 |2019年第42期|1903970.1-1903970.12|共12页
  • 作者

    Sun Huiliang; Liu Bin; Koh Chang Woo; Zhang Yujie; Chen Jianhua; Wang Yang; Chen Peng; Tu Bao; Su Maoyao; Wang Hang; Tang Yumin; Shi Yongqiang; Woo Han Young; Guo Xugang;

  • 作者单位

    Southern Univ Sci & Technol SUSTech Dept Mat Sci & Engn 1088 Xueyuan Rd Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol SUSTech Shenzhen Key Lab Printed Organ Elect 1088 Xueyuan Rd Shenzhen 518055 Guangdong Peoples R China|South China Univ Technol Inst Polymer Optoelect Mat & Devices State Key Lab Luminescent Mat & Devices Guangzhou 510640 Guangdong Peoples R China;

    Southern Univ Sci & Technol SUSTech Dept Mat Sci & Engn 1088 Xueyuan Rd Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol SUSTech Shenzhen Key Lab Printed Organ Elect 1088 Xueyuan Rd Shenzhen 518055 Guangdong Peoples R China|Peking Univ Shenzhen Grad Sch Sch Adv Mat Shenzhen 518055 Peoples R China;

    Korea Univ Dept Chem Seoul 136713 South Korea;

    Southern Univ Sci & Technol SUSTech Dept Mat Sci & Engn 1088 Xueyuan Rd Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol SUSTech Shenzhen Key Lab Printed Organ Elect 1088 Xueyuan Rd Shenzhen 518055 Guangdong Peoples R China;

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  • 正文语种 eng
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  • 关键词

    all-polymer solar cells; imide-functionalized heteroarenes; n-type polymers; organic electronics; random terpolymers;

    机译：全聚合物太阳能电池;酰亚胺官能化的杂芳烃;n型聚合物;有机电子产品;无规三元共聚物;

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