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首页> 外文期刊>Advanced energy materials >Steric Engineering of Alkylthiolation Side Chains to Finely Tune Miscibility in Nonfullerene Polymer Solar Cells
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Steric Engineering of Alkylthiolation Side Chains to Finely Tune Miscibility in Nonfullerene Polymer Solar Cells

机译：烷硫醇化侧链的空间工程在非辛丙烯酸丁烯聚合物太阳能电池中精细调谐混溶性

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摘要

Morphology and miscibility control are still a great challenge in polymer solar cells. Despite physical tools being applied, chemical strategies are still limited and complex. To finely tune blend miscibility to obtain optimized morphology, chemical steric engineering is proposed to systemically investigate its effects on optical and electronic properties, especially on a balance between crystallinity and miscibility. By changing the alkylthiol side chain orientation different steric effects are realized in three different polymers. Surprisingly, the photovoltaic device of the polymerPTBB-m with middle steric structure affords a better power conversion efficiency, over 12%, compared to those of the polymers PTBB-o and PTBB-p with large or small steric structures, which could be attributed to a more balanced blend miscibility without sacrificing charge-carrier transport. Space charge-limited current, atomic force microscopy, grazing incidence wide angle X-ray scattering, and resonant soft X-ray scattering measurements show that the steric engineering of alkylthiol side chains can have significant impacts on polymer aggregation properties, blend miscibility, and photovoltaic performances. More important, the control of miscibility via the simple chemical approach has preliminarily proved its great potential and will pave a new avenue for optimizing the blend morphology.
机译：形态学和混溶性控制在聚合物太阳能电池中仍然是一个巨大的挑战。尽管应用了物理工具，但化学策略仍然有限，复杂。为了精细地调整混合使得获得优化形态的混合性，提出了化学空间工程，以系统地研究其对光学和电子性质的影响，特别是在结晶度和混溶性之间的平衡。通过改变烷硫醇侧链取向不同的空间效应在三种不同的聚合物中实现。令人惊讶的是，与具有大型或小型结构的聚合物PTBB-O和PTBB-P的聚合物PTBB-O和PTBB-P相比，聚合物PTBB-M的光伏器件提供更好的功率转化效率，超过12％，其具有大或小型结构的PTBB-P，这可能归因于在不牺牲充电载体运输的情况下更平衡的混合混合性。空间电荷限制电流，原子力显微镜，放牧入射范围X射线散射和共振软X射线散射测量表明，烷硫醇侧链的空间工程对聚合物聚集性能具有显着影响，混合混溶性和光伏表演。更重要的是，通过简单的化学方法控制混合性的控制已经初步证明了它的巨大潜力，并将铺平新的途径以优化混合形态。

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  • 来源
    《Advanced energy materials》 |2019年第4期|1802686.1-1802686.11|共11页
  • 作者

    Xue Xiaonan; Weng Kangkang; Qi Feng; Zhang Yu; Wang Zaiyu; Ali Jazib; Wei Donghui; Sun Yonming; Liu Feng; Wan Meixiu; Liu Juan; Huo Lijun;

  • 作者单位

    Beihang Univ Sch Chem Beijing 100191 Peoples R China;

    Beihang Univ Sch Chem Beijing 100191 Peoples R China;

    Beihang Univ Sch Chem Beijing 100191 Peoples R China;

    Beihang Univ Sch Chem Beijing 100191 Peoples R China;

    Shanghai Jiao Tong Univ Dept Phys & Astron Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Dept Phys & Astron Shanghai 200240 Peoples R China;

    Zhengzhou Univ Coll Chem & Mol Engn Zhengzhou 450001 Henan Peoples R China;

    Beihang Univ Sch Chem Beijing 100191 Peoples R China;

    Shanghai Jiao Tong Univ Dept Phys & Astron Shanghai 200240 Peoples R China;

    Beihang Univ Sch Chem Beijing 100191 Peoples R China;

    Beihang Univ Sch Chem Beijing 100191 Peoples R China;

    Beihang Univ Sch Chem Beijing 100191 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    alkylthiolation; miscibility; nonfullerene; polymer solar cells; steric effects;

    机译：烷噻嗪;混溶;非替代;聚合物太阳能电池;空间效应;

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