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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >High-performance inverted polymer solar cells without an electron extraction layer via a one-step coating of cathode buffer and active layer
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High-performance inverted polymer solar cells without an electron extraction layer via a one-step coating of cathode buffer and active layer

机译：高性能倒聚合物太阳能电池，无需电子提取层通过一步涂层的阴极缓冲液和活性层

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摘要

Low cost and efficient processing are key factors to be considered for the future practical application of polymer solar cells (PSCs). Herein, we report a novel strategy for the fabrication of high performance inverted PSCs via a simple one-step coating of the mixture of an amino-functionalized n-type small molecule POF-N and the active layer to simultaneously form the active layer and cathode interlayer. Interestingly, the inverted device based on one-step coating yielded enhanced or comparable power conversion efficiency (PCE) for fullerene, non-fullerene and polymeric acceptor based solar cells. The underlying mechanism was disclosed to be that POF-N preferred to aggregate closely on the indium tin oxide (ITO) surface during the coating process and served as the electron transport layer. Electron spin resonance spectra and space-charge-limited charge mobility tests showed that the electron mobility of the active layer was obviously enhanced due to the efficient doping interaction between POF-N and PC71BM. Consequently, the balanced charge transport contributed to the increased short-circuit current of the device. Our universal results, based on different systems, provide a promising device structure and design concept to reduce the cost of efficient PSCs.
机译：低成本和高效的处理是用于未来聚合物太阳能电池（PSC）的未来实际应用的关键因素。在此，我们通过简单的一步涂层通过简单的氨基官能化的N型小分子POF-N和活性层的混合物制备高性能倒置PSC的新策略，同时形成有源层和阴极中间人。有趣的是，基于一步涂层的倒置装置产生增强或相当于基于富勒烯，非富勒烯和聚合物受体的太阳能电池的功率转换效率（PCE）。公开了潜在的机制，是POF-N优选在涂布过程中敏地聚集在氧化铟锡（ITO）表面上，并用作电子传输层。电子自旋共振光谱和空间电荷限制电荷迁移率测试表明，由于POF-N和PC71BM之间的有效掺杂相互作用，显着提高了活性层的电子迁移率。因此，平衡电荷传输导致装置的短路电流增加。我们的通用结果基于不同的系统，提供了有希望的设备结构和设计理念，以降低高效PSC的成本。

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  • 作者

    Zheng Nannan; Wang Zhenfeng; Zhang Kai; Li Yuan; Huang Fei; Cao Yong;

  • 作者单位

    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;

    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;

    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;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
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