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Ultrasensitive mechanical/thermal response of a P(VDF-TrFE) sensor with a tailored network interconnection interface

Author

Listed:
  • Bo Li

    (Southern University of Science and Technology)

  • Chuanyang Cai

    (Xiangtan University)

  • Yang Liu

    (Huazhong University of Science & Technology)

  • Fang Wang

    (Chinese Academy of Sciences (CAS))

  • Bin Yang

    (Southern University of Science and Technology)

  • Qikai Li

    (Southern University of Science and Technology)

  • Pengxiang Zhang

    (Southern University of Science and Technology)

  • Biao Deng

    (Southern University of Science and Technology)

  • Pengfei Hou

    (Xiangtan University)

  • Weishu Liu

    (Southern University of Science and Technology)

Abstract

Ferroelectric polymers have great potential applications in mechanical/thermal sensing, but their sensitivity and detection limit are still not outstanding. We propose interface engineering to improve the charge collection in a ferroelectric poly(vinylidene fluoride-co-trifluoroethylene) copolymer (P(VDF-TrFE)) thin film via cross-linking with poly(3,4-ethylenedioxythiophene) doped with polystyrenesulfonate (PEDOT:PSS) layer. The as-fabricated P(VDF-TrFE)/PEDOT:PSS composite film exhibits an ultrasensitive and linear mechanical/thermal response, showing sensitivities of 2.2 V kPa−1 in the pressure range of 0.025–100 kPa and 6.4 V K−1 in the temperature change range of 0.05–10 K. A corresponding piezoelectric coefficient of −86 pC N−1 and a pyroelectric coefficient of 95 μC m−2 K−1 are achieved because more charge is collected by the network interconnection interface between PEDOT:PSS and P(VDF-TrFE), related to the increase in the dielectric properties. Our work shines a light on a device-level technique route for boosting the sensitivity of ferroelectric polymer sensors through electrode interface engineering.

Suggested Citation

  • Bo Li & Chuanyang Cai & Yang Liu & Fang Wang & Bin Yang & Qikai Li & Pengxiang Zhang & Biao Deng & Pengfei Hou & Weishu Liu, 2023. "Ultrasensitive mechanical/thermal response of a P(VDF-TrFE) sensor with a tailored network interconnection interface," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-39476-4
    DOI: 10.1038/s41467-023-39476-4
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    References listed on IDEAS

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    1. Ningning Bai & Liu Wang & Qi Wang & Jue Deng & Yan Wang & Peng Lu & Jun Huang & Gang Li & Yuan Zhang & Junlong Yang & Kewei Xie & Xuanhe Zhao & Chuan Fei Guo, 2020. "Graded intrafillable architecture-based iontronic pressure sensor with ultra-broad-range high sensitivity," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    2. Yang Liu & Haibibu Aziguli & Bing Zhang & Wenhan Xu & Wenchang Lu & J. Bernholc & Qing Wang, 2018. "Ferroelectric polymers exhibiting behaviour reminiscent of a morphotropic phase boundary," Nature, Nature, vol. 562(7725), pages 96-100, October.
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