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High sensitivity organic inorganic hybrid X-ray detectors with direct transduction and broadband response

Author

Listed:
  • H. M. Thirimanne

    (University of Surrey, Guildford)

  • K. D. G. I. Jayawardena

    (University of Surrey, Guildford)

  • A. J. Parnell

    (University of Sheffield)

  • R. M. I. Bandara

    (University of Surrey, Guildford)

  • A. Karalasingam

    (University of Surrey, Guildford)

  • S. Pani

    (University of Surrey, Guildford)

  • J. E. Huerdler

    (Technology Centre)

  • D. G. Lidzey

    (University of Sheffield)

  • S. F. Tedde

    (Technology Centre)

  • A. Nisbet

    (University of Surrey, Guildford
    Royal Surrey County Hospital NHS Foundation Trust)

  • C. A. Mills

    (University of Surrey, Guildford)

  • S. R. P. Silva

    (University of Surrey, Guildford)

Abstract

X-ray detectors are critical to healthcare diagnostics, cancer therapy and homeland security, with many potential uses limited by system cost and/or detector dimensions. Current X-ray detector sensitivities are limited by the bulk X-ray attenuation of the materials and consequently necessitate thick crystals (~1 mm–1 cm), resulting in rigid structures, high operational voltages and high cost. Here we present a disruptive, flexible, low cost, broadband, and high sensitivity direct X-ray transduction technology produced by embedding high atomic number bismuth oxide nanoparticles in an organic bulk heterojunction. These hybrid detectors demonstrate sensitivities of 1712 µC mGy−1 cm−3 for “soft” X-rays and ~30 and 58 µC mGy−1 cm−3 under 6 and 15 MV “hard” X-rays generated from a medical linear accelerator; strongly competing with the current solid state detectors, all achieved at low bias voltages (−10 V) and low power, enabling detector operation powered by coin cell batteries.

Suggested Citation

  • H. M. Thirimanne & K. D. G. I. Jayawardena & A. J. Parnell & R. M. I. Bandara & A. Karalasingam & S. Pani & J. E. Huerdler & D. G. Lidzey & S. F. Tedde & A. Nisbet & C. A. Mills & S. R. P. Silva, 2018. "High sensitivity organic inorganic hybrid X-ray detectors with direct transduction and broadband response," Nature Communications, Nature, vol. 9(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05301-6
    DOI: 10.1038/s41467-018-05301-6
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    Cited by:

    1. Yangshuang Bian & Kai Liu & Yang Ran & Yi Li & Yuanhong Gao & Zhiyuan Zhao & Mingchao Shao & Yanwei Liu & Junhua Kuang & Zhiheng Zhu & Mingcong Qin & Zhichao Pan & Mingliang Zhu & Chenyu Wang & Hu Che, 2022. "Spatially nanoconfined N-type polymer semiconductors for stretchable ultrasensitive X-ray detection," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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