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首页> 外文期刊>Advanced energy materials >Molecular Level Insight into Enhanced n-Type Transport in Solution-Printed Hybrid Thermoelectrics
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Molecular Level Insight into Enhanced n-Type Transport in Solution-Printed Hybrid Thermoelectrics

机译：分子水平洞察溶液印刷混合热电梁中增强的n型输送

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摘要

Perylene diimide (PDI) derivatives hold great promise as stable, solution-printable n-type organic thermoelectric materials, but as of yet lack sufficient electrical conductivity to warrant further development. Hybrid PDI-inorganic nanomaterials have the potential to leverage these physical advantages while simultaneously achieving higher thermoelectric performance. However, lack of molecular level insight precludes design of high performing PDI-based hybrid thermoelectrics. Herein, the first explicit crystal structure of these materials is reported, providing previously inaccessible insight into the relationship between their structure and thermoelectric properties. Allowing this molecular level insight to drive novel methodologies, simple solution-based techniques to prepare PDI hybrid thermoelectric inks with up to 20-fold enhancement in thermoelectric power factor over the pristine molecule (up to 17.5 mu W mK(-2)) is presented. This improved transport is associated with reorganization of organic molecules on the surface of inorganic nanostructures. Additionally, outstanding mechanical flexibility is demonstrated by fabricating solution-printed thermoelectric modules with innovative folded geometries. This work provides the first direct evidence that packing/organization of organic molecules on inorganic nanosurfaces is the key to effective thermoelectric transport in nanohybrid systems.
机译：Per BerneNe二酰亚胺（PDI）衍生物具有稳定的，可打印的N型有机热电材料具有稳定的承担，但由于缺乏足够的导电性来保证进一步发展。杂交PDI-无机纳米材料有可能利用这些物理优势，同时实现更高的热电性能。然而，缺乏分子水平洞察力排除了高性能的基于PDI的混合热电设计的设计。这里，报告了这些材料的第一显式晶体结构，以先前无法进入其结构与热电性能之间的关系。允许这种分子水平洞察推动新的方法，简单的基于溶液的技术，以制备PDI混合热电油墨，在原始分子上通过高达20倍的热电系数增强（高达17.5μmk（-2））。 。这种改进的转运与无机纳米结构表面上的有机分子的重组相关。此外，通过使用创新的折叠几何形状制造溶液印刷的热电模块来证明出色的机械灵活性。这项工作提供了第一种直接证据，即无机纳米术中的有机分子包装/组织有机分子是纳米冬次系统中有效热电传输的关键。

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  • 来源
    《Advanced energy materials》 |2019年第13期|1803469.1-1803469.11|共11页
  • 作者

    Zaia Edmond W.; Gordon Madeleine P.; Niemann Valerie; Choi Jaeyoo; Chatterjee Ruchira; Hsu Chih-Hao; Yano Junko; Russ Boris; Sahu Ayaskanta; Urban Jeffrey J.;

  • 作者单位

    Univ Calif Berkeley Dept Chem & Biomol Engn Berkeley CA 94720 USA|Lawrence Berkeley Natl Lab Mol Foundry Berkeley CA 94720 USA;

    Lawrence Berkeley Natl Lab Mol Foundry Berkeley CA 94720 USA|Univ Calif Berkeley Appl Sci & Technol Grad Grp Berkeley CA 94720 USA;

    Lawrence Berkeley Natl Lab Mol Foundry Berkeley CA 94720 USA;

    Lawrence Berkeley Natl Lab Mol Foundry Berkeley CA 94720 USA;

    Lawrence Berkeley Natl Lab Dept Chem & Biomol Engn Berkeley CA 94720 USA;

    Lawrence Berkeley Natl Lab Mol Foundry Berkeley CA 94720 USA;

    Lawrence Berkeley Natl Lab Dept Chem & Biomol Engn Berkeley CA 94720 USA;

    Lawrence Berkeley Natl Lab Mol Foundry Berkeley CA 94720 USA;

    Lawrence Berkeley Natl Lab Mol Foundry Berkeley CA 94720 USA|NYU Dept Chem Engn Brooklyn NY 11201 USA;

    Lawrence Berkeley Natl Lab Mol Foundry Berkeley CA 94720 USA;

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

    hybrid; n-type; organic-inorganic; perylene diimide; thermoelectric;

    机译：杂交;n型;有机 - 无机;PeryLene二酰亚胺;热电;

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