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首页> 外文期刊>Advanced Materials >Organic Solar Cells with 18% Efficiency Enabled by an Alloy Acceptor: A Two-in-One Strategy
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Organic Solar Cells with 18% Efficiency Enabled by an Alloy Acceptor: A Two-in-One Strategy

机译：有机太阳能电池具有18％的效率，通过合金受体使能：双向策略

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摘要

The trade-off between the open-circuit voltage (V-oc) and short-circuit current density (J(sc)) has become the core of current organic photovoltaic research, and realizing the minimum energy offsets that can guarantee effective charge generation is strongly desired for high-performance systems. Herein, a high-performance ternary solar cell with a power conversion efficiency of over 18% using a large-bandgap polymer donor, PM6, and a small-bandgap alloy acceptor containing two structurally similar nonfullerene acceptors (Y6 and AQx-3) is reported. This system can take full advantage of solar irradiation and forms a favorable morphology. By varying the ratio of the two acceptors, delicate regulation of the energy levels of the alloy acceptor is achieved, thereby affecting the charge dynamics in the devices. The optimal ternary device exhibits more efficient hole transfer and exciton separation than the PM6:AQx-3-based system and reduced energy loss compared with the PM6:Y6-based system, contributing to better performance. Such a "two-in-one" alloy strategy, which synergizes two highly compatible acceptors, provides a promising path for boosting the photovoltaic performance of devices.
机译：开路电压（V-OC）和短路电流密度（J（SC））之间的折衷已成为当前有机光伏研究的核心，并实现可以保证有效充电的最小能量偏移强烈需要高性能系统。这里，使用大带隙聚合物供体，PM6和含有两个结构相似的非对准受体（Y6和AQX-3）的高功率转换效率超过18％的高性能三元太阳能电池。 。该系统可以充分利用太阳照射并形成有利的形态。通过改变两个受体的比率，实现了合金受体的能量水平的精细调节，从而影响器件中的电荷动力学。最佳三元设备具有比PM6：基于PM6的PM6：基于PM6：基于PM6：Y6的系统相比的能量损失更有效的孔转移和激子分离，有助于更好的性能。这种“双向”合金策略，其协同两个高度兼容的受体，提供了提高器件的光伏性能的有希望的路径。

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  • 来源
    《Advanced Materials》 |2021年第27期|2100830.1-2100830.8|共8页
  • 作者

    Liu Feng; Zhou Liang; Liu Wenrui; Zhou Zichun; Yue Qihui; Zheng Wenyu; Sun Ri; Liu Wuyue; Xu Shengjie; Fan Haijun; Feng Liheng; Yi Yuanping; Zhang Wenkai; Zhu Xiaozhang;

  • 作者单位

    Chinese Acad Sci Inst Chem CAS Key Lab Organ Solids Beijing Natl Lab Mol Sci Beijing 100190 Peoples R China|Shanxi Univ Sch Chem & Chem Engn Taiyuan 030006 Peoples R China;

    Beijing Normal Univ Ctr Adv Quantum Studies Dept Phys & Appl Opt Beijing Area Major Lab Beijing 100875 Peoples R China;

    Chinese Acad Sci Inst Chem CAS Key Lab Organ Solids Beijing Natl Lab Mol Sci Beijing 100190 Peoples R China|Univ Chinese Acad Sci Sch Chem Sci Beijing 100049 Peoples R China;

    Chinese Acad Sci Inst Chem CAS Key Lab Organ Solids Beijing Natl Lab Mol Sci Beijing 100190 Peoples R China|Univ Chinese Acad Sci Sch Chem Sci Beijing 100049 Peoples R China;

    Chinese Acad Sci Inst Chem CAS Key Lab Organ Solids Beijing Natl Lab Mol Sci Beijing 100190 Peoples R China|Univ Chinese Acad Sci Sch Chem Sci Beijing 100049 Peoples R China;

    Chinese Acad Sci Inst Chem CAS Key Lab Organ Solids Beijing Natl Lab Mol Sci Beijing 100190 Peoples R China|Univ Chinese Acad Sci Sch Chem Sci Beijing 100049 Peoples R China;

    Shanxi Univ Sch Chem & Chem Engn Taiyuan 030006 Peoples R China;

    Univ Chinese Acad Sci Sch Chem Sci Beijing 100049 Peoples R China;

    Chinese Acad Sci Inst Chem CAS Key Lab Organ Solids Beijing Natl Lab Mol Sci Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Chem CAS Key Lab Organ Solids Beijing Natl Lab Mol Sci Beijing 100190 Peoples R China;

    Shanxi Univ Sch Chem & Chem Engn Taiyuan 030006 Peoples R China;

    Chinese Acad Sci Inst Chem CAS Key Lab Organ Solids Beijing Natl Lab Mol Sci Beijing 100190 Peoples R China|Univ Chinese Acad Sci Sch Chem Sci Beijing 100049 Peoples R China;

    Beijing Normal Univ Ctr Adv Quantum Studies Dept Phys & Appl Opt Beijing Area Major Lab Beijing 100875 Peoples R China;

    Chinese Acad Sci Inst Chem CAS Key Lab Organ Solids Beijing Natl Lab Mol Sci Beijing 100190 Peoples R China|Univ Chinese Acad Sci Sch Chem Sci Beijing 100049 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    acceptor alloys; energy-level modulation; nonfullerene acceptors; power conversion efficiency; ternary organic solar cells;

    机译：受体合金;能量水平调制;非勒克兰人受体;电力转换效率;三元有机太阳能电池;

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