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首页> 外文期刊>ACS applied materials & interfaces >Optimized Molecular Packing and Nonradiative Energy Loss Based on Terpolymer Methodology Combining Two Asymmetric Segments for High-Performance Polymer Solar Cells
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Optimized Molecular Packing and Nonradiative Energy Loss Based on Terpolymer Methodology Combining Two Asymmetric Segments for High-Performance Polymer Solar Cells

机译：基于三元共聚物方法的优化分子包装和非抗体能量损失，组合两个高性能聚合物太阳能电池的两种不对称段

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摘要

In this work, a random terpolymer methodology combining two electron-rich units, asymmetric thienobenzodithiophene (TBD) and thieno[2,3-f]benzofuran segments, is systematically investigated. The synergetic effect is embodied on the molecular packing and nanophase when copolymerized with 1,3-bis(2-ethylhexyl)benzo[1,2-c:4,5-c']dithiophene-4,8-dione, producing an impressive power conversion efficiency (PCE) of 14.2% in IT-4F-based NF-PSCs, which outperformed the corresponding D -A copolymers. The balanced aggregation and better interpenetrating network of the TBD50:IT-4F blend film can lead to mixing region exciton splitting and suppress carrier recombination, along with high yields of long-lived carriers. Moreover, the broad applicability of terpolymer methodology is successfully validated in most electron-deficient systems. Especially, the TBD50/Y6-based device exhibits a high PCE of 15.0% with a small energy loss (0.52 eV) enabled by the low nonradiative energy loss (0.22 eV), which are among the best values reported for polymers without using benzodithiophene unit to date. These results demonstrate an outstanding terpolymer approach with backbone engineering to raise the hope of achieving even higher PCEs and to enrich organic photovoltaic materials reservoir.
机译：在这项工作中，系统地研究了组合两种电子富含电脑，不对称噻吩苯二苯甲酮（TBD）和Thieno [2,3-F]苯并呋喃段的随机三元共聚物方法。当用1,3-双（2-乙基己基）苯并[1,2-C：4,5-C']二噻吩-4,8-​​二酮共聚时，协同效应在分子包装和纳米旁边体现在分子包装和纳米相上，产生令人印象深刻的基于IT-4F的NF-PSC的功率转换效率（PCE）为14.2％，这优于相应的D -A共聚物。 TBD50的平衡聚集和更好的互穿网络：IT-4F共混膜可以导致混合区域Exciton分裂和抑制载体重组，以及高产的长寿命载体。此外，在大多数电子缺陷系统中成功验证了三元共聚物方法的广泛适用性。特别是，基于TBD50 / Y6的装置具有15.0％的高PCE，通过低的非抗体能量损失（0.22eV），能够具有小的能量损失（0.52eV），这是在不使用苯二噻吩单元的聚合物报道的最佳值中的最佳值之一迄今为止。这些结果表明，具有骨干工程的优秀三元共聚物方法，以提高实现甚至更高的PCE和丰富有机光伏材料储层的希望。

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  • 来源
    《ACS applied materials & interfaces》 |2020年第18期|共11页
  • 作者

    Wang Xunchang; Han Jianhua; Huang Da; Wang Jianing; Xie Yuan; Liu Zhilin; Li Yonghai; Yang Chunming; Zhang Yong; He Zhicai; Bao Xichang; Yang Renqiang;

  • 作者单位

    Chinese Acad Sci Qingdao Inst Bioenergy &

    Bioproc Technol CAS Key Lab Biobased Mat Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy &

    Bioproc Technol CAS Key Lab Biobased Mat Qingdao 266101 Peoples R China;

    Chinese Acad Sci Shanghai Inst Appl Phys Shanghai Synchrotron Radiat Facil Shanghai 201204 Peoples R China;

    South China Normal Univ Inst Semicond Sci &

    Technol Guangdong Prov Key Lab Nanophoton Funct Mat &

    Dev Guangzhou 510631 Peoples R China;

    South China Univ Technol State Key Lab Luminescent Mat &

    Devices Inst Polymer Optoelect Mat &

    Devices Guangzhou 510640 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy &

    Bioproc Technol CAS Key Lab Biobased Mat Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy &

    Bioproc Technol CAS Key Lab Biobased Mat Qingdao 266101 Peoples R China;

    Chinese Acad Sci Shanghai Inst Appl Phys Shanghai Synchrotron Radiat Facil Shanghai 201204 Peoples R China;

    South China Normal Univ Inst Semicond Sci &

    Technol Guangdong Prov Key Lab Nanophoton Funct Mat &

    Dev Guangzhou 510631 Peoples R China;

    South China Univ Technol State Key Lab Luminescent Mat &

    Devices Inst Polymer Optoelect Mat &

    Devices Guangzhou 510640 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy &

    Bioproc Technol CAS Key Lab Biobased Mat Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy &

    Bioproc Technol CAS Key Lab Biobased Mat Qingdao 266101 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

    nonfullerene solar cell; random terpolymer; asymmetrical structure; microstructure; nonradiative energy loss; power conversion efficiency;

    机译：非德国太阳能电池;随机三元共聚物;不对称结构;微观结构;非接种能量损失;电力转换效率;

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