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Inkjet Printed Large-Area Flexible Few-Layer Graphene Thermoelectrics

机译：喷墨印刷大面积柔性几层石墨烯热电元件

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摘要

Graphene-based organic nanocomposites have ascended as promising candidates for thermoelectric energy conversion. In order to adopt existing scalable printing methods for developing thermostable graphene-based thermoelectric devices, optimization of both the material ink and the thermoelectric properties of the resulting films are required. Here, inkjet-printed large-area flexible graphene thin films with outstanding thermoelectric properties are reported. The thermal and electronic transport properties of the films reveal the so-called phonon-glass electron-crystal character (i.e., electrical transport behavior akin to that of few-layer graphene flakes with quenched thermal transport arising from the disordered nanoporous structure). As a result, the all-graphene films show a room-temperature thermoelectric power factor of 18.7 mu W m(-1) K-2, representing over a threefold improvement to previous solution-processed all-graphene structures. The demonstration of inkjet-printed thermoelectric devices underscores the potential for future flexible, scalable, and low-cost thermoelectric applications, such as harvesting energy from body heat in wearable applications.
机译：石墨烯基有机纳米复合材料已成为热电能量转换的有前途的候选材料。为了采用现有的可缩放印刷方法来开发基于热稳定的石墨烯的热电器件，需要对材料油墨和所得膜的热电性质进行优化。在此，报道了具有优异的热电性能的喷墨印刷的大面积柔性石墨烯薄膜。膜的热和电子传输性质揭示了所谓的声子-玻璃电子晶体特征（即，类似于由无序的纳米多孔结构引起的具有猝灭的热传输的几层石墨烯薄片的电传输行为）。结果，全石墨烯膜的室温热电功率因数为18.7μW m（-1）K-2，比以前的固溶处理全石墨烯结构提高了三倍。喷墨打印热电设备的演示强调了未来灵活，可扩展和低成本热电应用的潜力，例如在可穿戴应用中从体热中收集能量。

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  • 来源
    《Advanced Functional Materials》 |2018年第22期|1800480.1-1800480.8|共8页
  • 作者

    Juntunen Taneli; Jussila Henri; Ruoho Mikko; Liu Shouhu; Hu Guohua; Albrow-Owen Tom; Ng Leonard W. T.; Howe Richard C. T.; Hasan Tawfique; Sun Zhipei; Tittonen Ilkka;

  • 作者单位

    Aalto Univ, Dept Elect & Nanoengn, FI-00076 Aalto, Finland;

    Aalto Univ, Dept Elect & Nanoengn, FI-00076 Aalto, Finland;

    Aalto Univ, Dept Elect & Nanoengn, FI-00076 Aalto, Finland;

    Univ Cambridge, Cambridge Graphene Ctr, 9 JJ Thomson Ave, Cambridge CB3 0FA, England;

    Univ Cambridge, Cambridge Graphene Ctr, 9 JJ Thomson Ave, Cambridge CB3 0FA, England;

    Univ Cambridge, Cambridge Graphene Ctr, 9 JJ Thomson Ave, Cambridge CB3 0FA, England;

    Univ Cambridge, Cambridge Graphene Ctr, 9 JJ Thomson Ave, Cambridge CB3 0FA, England;

    Univ Cambridge, Cambridge Graphene Ctr, 9 JJ Thomson Ave, Cambridge CB3 0FA, England;

    Univ Cambridge, Cambridge Graphene Ctr, 9 JJ Thomson Ave, Cambridge CB3 0FA, England;

    Aalto Univ, Dept Elect & Nanoengn, FI-00076 Aalto, Finland;

    Aalto Univ, Dept Elect & Nanoengn, FI-00076 Aalto, Finland;

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

    graphene; inkjet printing; large-area thermoelectrics;

    机译：石墨烯;喷墨印刷;大面积热电学;

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