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首页> 外文期刊>ACS applied materials & interfaces >'Double-Acceptor-Type' Random Conjugated Terpolymer Donors for Additive-Free Non-Fullerene Organic Solar Cells
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'Double-Acceptor-Type' Random Conjugated Terpolymer Donors for Additive-Free Non-Fullerene Organic Solar Cells

机译：“双占 - 型”随机共轭三元共聚物供体，用于无富勒烯有机太阳能电池

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摘要

Random conjugated terpolymers (RCTs) not only promote great comprehension and realization for the state-of-the-art highly effective non-fullerene organic solar cells (OSCs) but also offer a simple and practical synthetic strategy. However, the photovoltaic properties of RCTs yet lagged behind that of the donor-acceptor (D-A) alternating copolymer, especially in additive-free devices. Hence, we developed two feasible "double-acceptor-type" random conjugated terpolymers, PBDB-TAZ20 and PBDB-TAZ40. The additive-free OSCs based on PBDB-TAZ20:ITIC and PBDB-TAZ40:ITIC exhibit decent efficiencies of 12.34 and 11.27%, respectively, which both surpass the PBDB-T:ITIC-based device. For RCTs, the reasonably weakened crystallinity and the reduced phase separation degree are demonstrated to help in improving charge transport, reducing bimolecular recombination, and thus enhancing the photovoltaic performance of additive-free OSCs. The results imply that adding a third moiety into the D-A polymer donors provides a simple but efficient synthetic approach for high-performance OSCs.
机译：随机共轭三元共聚物（RCT）不仅促进了最先进的高效非富勒烯有机太阳能电池（OSC）的巨大理解和实现，而且提供了一种简单实用的合成策略。然而，RCT的光伏性能却滞后于供体 - 受体（D-A）交替共聚物的后面，特别是在无添加剂的装置中。因此，我们开发了两个可行的“双重受体型”随机共轭三元共聚物，PBDB-TAZ20和PBDB-TAZ40。基于PBDB-TAZ20的无添加剂OSC：ITIC和PBDB-TAZ40：ITIC分别表现出12.34和11.27％的体面效率，两者都超越了PBDB-T：基于ITIC的设备。对于RCT，对结晶度合理削弱和降低的相分离度，以帮助改善电荷传输，降低双分子重组，从而提高无添加剂OSC的光伏性能。结果意味着将第三部分添加到D-A聚合物供体中为高性能OSC提供了一种简单但有效的合成方法。

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  • 来源
    《ACS applied materials & interfaces》 |2020年第18期|共9页
  • 作者

    Zhang Youdi; Shao Yiming; Wei Zhouyin; Zhang Lifu; Hu Yu; Chen Lie; Chen Shanshan; Yuan Zhongyi; Chen Yiwang;

  • 作者单位

    Nanchang Univ Coll Chem Nanchang 330031 Jiangxi Peoples R China;

    Nanchang Univ Coll Chem Nanchang 330031 Jiangxi Peoples R China;

    Chongqing Univ MOE Key Lab Low Grade Energy Utilizat Technol &

    S Sch Energy &

    Power Engn Chongqing 400044 Peoples R China;

    Nanchang Univ Coll Chem Nanchang 330031 Jiangxi Peoples R China;

    Nanchang Univ Coll Chem Nanchang 330031 Jiangxi Peoples R China;

    Nanchang Univ Coll Chem Nanchang 330031 Jiangxi Peoples R China;

    Chongqing Univ MOE Key Lab Low Grade Energy Utilizat Technol &

    S Sch Energy &

    Power Engn Chongqing 400044 Peoples R China;

    Nanchang Univ Coll Chem Nanchang 330031 Jiangxi Peoples R China;

    Nanchang Univ Coll Chem Nanchang 330031 Jiangxi Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    random terpolymers; polymer solar cells; non-fullerenes; morphology; crystallinity;

    机译：随机三元共聚物;聚合物太阳能电池;非富勒烯;形态;结晶度;

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