Inkjet Printed Large-Area Flexible Few-Layer Graphene Thermoelectrics

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

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

44 Citations (Scopus)
189 Downloads (Pure)

Abstract

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 µW 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.

Original languageEnglish
Article number1800480
JournalAdvanced Functional Materials
Volume28
Issue number22
DOIs
Publication statusPublished - 30 May 2018
MoE publication typeA1 Journal article-refereed

Keywords

  • graphene
  • inkjet printing
  • large-area thermoelectrics

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  • Projects

    LAYERED 2D MATERIALS BASED THZ SPECTROSCOPY AND IMAGING

    Sun, Z., Das, S., Generalov, A. & Uddin, M.

    01/01/201831/12/2021

    Project: Academy of Finland: Other research funding

    Graphene Based Ultrafast Lasers

    Sun, Z., Xue, H., Yang, H., Das, S., Du, M., Generalov, A. & Autere, A.

    01/09/201724/09/2019

    Project: Academy of Finland: Other research funding

    High-performance ultrafast mid-infrared fiber lasers for health and wellbeing applications

    Turunen, M., Sun, Z., Wang, Y., Dai, Y., Yang, H., Jussila, H. & Salomaa, V.

    01/10/201630/09/2018

    Project: Academy of Finland: Other research funding

    Equipment

    OtaNano

    Anna Rissanen (Manager)

    Aalto University

    Facility/equipment: Facility

  • Cite this

    Juntunen, T., Jussila, H., Ruoho, M., Liu, S., Hu, G., Albrow-Owen, T., Ng, L. W. T., Howe, R. C. T., Hasan, T., Sun, Z., & Tittonen, I. (2018). Inkjet Printed Large-Area Flexible Few-Layer Graphene Thermoelectrics. Advanced Functional Materials, 28(22), [1800480]. https://doi.org/10.1002/adfm.201800480