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首页> 外文期刊>Advanced energy materials >New Anthracene-Fused Nonfullerene Acceptors for High-Efficiency Organic Solar Cells: Energy Level Modulations Enabling Match of Donor and Acceptor
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New Anthracene-Fused Nonfullerene Acceptors for High-Efficiency Organic Solar Cells: Energy Level Modulations Enabling Match of Donor and Acceptor

机译：用于高效有机太阳能电池的新型蒽融合型非富勒烯受体：能级调制实现供体和受体的匹配

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摘要

Two new nonfullerene small molecule acceptors (NF-SMAs) AT-NC and AT-4Cl based on heptacyclic anthracene(cyclopentadithiophene) (AT) core and different electron-withdrawing end groups are designed and synthesized. Although the two new acceptor molecules use two different end groups, naphthyl-fused indanone (NINCN) and chlorinated INCN (INCN-2Cl) demonstrate similar light absorption. AT-4Cl with chlorinated INCN as end groups are shifted significantly due to the strong electron-withdrawing ability of chlorine atoms. Thus, desirable V-oc, and photovoltaic performance are expected to be achieved when polymer PBDB-T is used as the electron donor with AT-NC as the acceptor, and fluorinated analog PBDB-TF with down-shifted energy levels is selected to blend with AT-4Cl. Consequently, the device based on P6DB-TF:AT-4Cl yields a high power conversion efficiency of 13.27% with a slightly lower V-oc of 0.901 V, significantly enhanced J(sc) of 19.52 mA cm(-2) and fill factor of 75.5% relative to the values based on PBDB-T:AT-NC. These results demonstrate that the use of a new electron-rich AT core, together with energy levels modulations by end-group optimizations enabling the match with polymer donors, is a successful strategy to construct high-performance NF-SMAs.
机译：设计并合成了两种基于杂环蒽（环戊二噻吩）（AT）核和不同吸电子端基的新的非富勒烯小分子受体（NF-SMAs）AT-NC和AT-4Cl。尽管两个新的受体分子使用两个不同的端基，但萘基稠合的茚满酮（NINCN）和氯化INCN（INCN-2Cl）表现出相似的光吸收。由于氯原子具有很强的吸电子能力，以氯化INCN为末端基团的AT-4Cl发生了显着变化。因此，当将聚合物PBDB-T用作电子供体，并以AT-NC作为受体，并选择能级下移的氟化模拟PBDB-TF进行混合时，有望实现理想的V-oc和光伏性能。与AT-4Cl。因此，基于P6DB-TF：AT-4Cl的设备可产生13.27％的高功率转换效率，V-oc略低至0.901 V，J（sc）显着提高，达到19.52 mA cm（-2）和填充系数相对于基于PBDB-T：AT-NC的值是75.5％。这些结果表明，使用新型的富电子AT核以及通过端基优化进行的能级调节，使其能够与聚合物供体匹配，是构建高性能NF-SMA的成功策略。

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  • 来源
    《Advanced energy materials》 |2019年第12期|1803541.1-1803541.8|共8页
  • 作者

    Feng Huanran; Yi Yuan-Qiu-Qiang; Ke Xin; Yan Jing; Zhang Yamin; Wan Xiangjian; Li Chenxi; Zheng Nan; Xie Zengqi; Chen Yongsheng;

  • 作者单位

    Nankai Univ, State Key Lab, Coll Chem, Tianjin 300071, Peoples R China|Nankai Univ, Inst Elementoorgan Chem, Ctr Nanoscale Sci & Technol, Tianjin 300071, Peoples R China|Nankai Univ, Coll Chem, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China;

    Nankai Univ, State Key Lab, Coll Chem, Tianjin 300071, Peoples R China|Nankai Univ, Inst Elementoorgan Chem, Ctr Nanoscale Sci & Technol, Tianjin 300071, Peoples R China|Nankai Univ, Coll Chem, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China;

    Nankai Univ, State Key Lab, Coll Chem, Tianjin 300071, Peoples R China|Nankai Univ, Inst Elementoorgan Chem, Ctr Nanoscale Sci & Technol, Tianjin 300071, Peoples R China|Nankai Univ, Coll Chem, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China;

    Nankai Univ, State Key Lab, Coll Chem, Tianjin 300071, Peoples R China|Nankai Univ, Inst Elementoorgan Chem, Ctr Nanoscale Sci & Technol, Tianjin 300071, Peoples R China|Nankai Univ, Coll Chem, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China;

    Nankai Univ, State Key Lab, Coll Chem, Tianjin 300071, Peoples R China|Nankai Univ, Inst Elementoorgan Chem, Ctr Nanoscale Sci & Technol, Tianjin 300071, Peoples R China|Nankai Univ, Coll Chem, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China;

    Nankai Univ, State Key Lab, Coll Chem, Tianjin 300071, Peoples R China|Nankai Univ, Inst Elementoorgan Chem, Ctr Nanoscale Sci & Technol, Tianjin 300071, Peoples R China|Nankai Univ, Coll Chem, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China;

    Nankai Univ, State Key Lab, Coll Chem, Tianjin 300071, Peoples R China|Nankai Univ, Inst Elementoorgan Chem, Ctr Nanoscale Sci & Technol, Tianjin 300071, Peoples R China|Nankai Univ, Coll Chem, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China;

    South China Univ Technol, State Key Lab Luminescent Mat & Devices, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China;

    South China Univ Technol, State Key Lab Luminescent Mat & Devices, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China;

    Nankai Univ, State Key Lab, Coll Chem, Tianjin 300071, Peoples R China|Nankai Univ, Inst Elementoorgan Chem, Ctr Nanoscale Sci & Technol, Tianjin 300071, Peoples R China|Nankai Univ, Coll Chem, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    anthracene; end-group modulation; energy level match; nonfullerene acceptors;

    机译：蒽;端基调制;能级匹配;非富勒烯受体;

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