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Graphene-based mid-infrared room-temperature pyroelectric bolometers with ultrahigh temperature coefficient of resistance

Author

Listed:
  • U. Sassi

    (Cambridge Graphene Centre, University of Cambridge)

  • R. Parret

    (ICFO Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology)

  • S. Nanot

    (ICFO Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology)

  • M. Bruna

    (Nokia Technologies
    Present address: Nokia Bell Labs, Broers Building, Cambridge CB3 0FA, UK)

  • S. Borini

    (Nokia Technologies
    Present address: Graphitene Ltd, SBC Open Innovation Campus, Stevenage, Herts SG1 2FX, UK)

  • D. De Fazio

    (Cambridge Graphene Centre, University of Cambridge)

  • Z. Zhao

    (Cambridge Graphene Centre, University of Cambridge)

  • E. Lidorikis

    (University of Ioannina)

  • F.H.L. Koppens

    (ICFO Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology
    ICREA Institució Catalana de Recerça i Estudis Avancats)

  • A. C. Ferrari

    (Cambridge Graphene Centre, University of Cambridge)

  • A. Colli

    (Emberion Ltd)

Abstract

There is a growing number of applications demanding highly sensitive photodetectors in the mid-infrared. Thermal photodetectors, such as bolometers, have emerged as the technology of choice, because they do not need cooling. The performance of a bolometer is linked to its temperature coefficient of resistance (TCR, ∼2–4% K−1 for state-of-the-art materials). Graphene is ideally suited for optoelectronic applications, with a variety of reported photodetectors ranging from visible to THz frequencies. For the mid-infrared, graphene-based detectors with TCRs ∼4–11% K−1 have been demonstrated. Here we present an uncooled, mid-infrared photodetector, where the pyroelectric response of a LiNbO3 crystal is transduced with high gain (up to 200) into resistivity modulation for graphene. This is achieved by fabricating a floating metallic structure that concentrates the pyroelectric charge on the top-gate capacitor of the graphene channel, leading to TCRs up to 900% K−1, and the ability to resolve temperature variations down to 15 μK.

Suggested Citation

  • U. Sassi & R. Parret & S. Nanot & M. Bruna & S. Borini & D. De Fazio & Z. Zhao & E. Lidorikis & F.H.L. Koppens & A. C. Ferrari & A. Colli, 2017. "Graphene-based mid-infrared room-temperature pyroelectric bolometers with ultrahigh temperature coefficient of resistance," Nature Communications, Nature, vol. 8(1), pages 1-10, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14311
    DOI: 10.1038/ncomms14311
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    Cited by:

    1. Malkeshkumar Patel & Hyeong-Ho Park & Priyanka Bhatnagar & Naveen Kumar & Junsik Lee & Joondong Kim, 2024. "Transparent integrated pyroelectric-photovoltaic structure for photo-thermo hybrid power generation," Nature Communications, Nature, vol. 15(1), pages 1-14, December.
    2. Xi Zeng & Yi Liu & Wen Weng & Lina Hua & Liwei Tang & Wuqian Guo & Yaoyao Chen & Tian Yang & Haojie Xu & Junhua Luo & Zhihua Sun, 2023. "A molecular pyroelectric enabling broadband photo-pyroelectric effect towards self-driven wide spectral photodetection," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    3. Dohyun Kwak & Dmitry K. Polyushkin & Thomas Mueller, 2023. "In-sensor computing using a MoS2 photodetector with programmable spectral responsivity," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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