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Determination of X-ray detection limit and applications in perovskite X-ray detectors

Author

Listed:
  • Lei Pan

    (The Ohio State University)

  • Shreetu Shrestha

    (Los Alamos National Laboratory)

  • Neil Taylor

    (The Ohio State University)

  • Wanyi Nie

    (Los Alamos National Laboratory)

  • Lei R. Cao

    (The Ohio State University)

Abstract

X-ray detection limit and sensitivity are important figure of merits for perovskite X-ray detectors, but literatures lack a valid mathematic expression for determining the lower limit of detection for a perovskite X-ray detector. In this work, we present a thorough analysis and new method for X-ray detection limit determination based on a statistical model that correlates the dark current and the X-ray induced photocurrent with the detection limit. The detection limit can be calculated through the measurement of dark current and sensitivity with an easy-to-follow practice. Alternatively, the detection limit may also be obtained by the measurement of dark current and photocurrent when repeatedly lowering the X-ray dose rate. While the material quality is critical, we show that the device architecture and working mode also have a significant influence on the sensitivity and the detection limit. Our work establishes a fair comparison metrics for material and detector development.

Suggested Citation

  • Lei Pan & Shreetu Shrestha & Neil Taylor & Wanyi Nie & Lei R. Cao, 2021. "Determination of X-ray detection limit and applications in perovskite X-ray detectors," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-25648-7
    DOI: 10.1038/s41467-021-25648-7
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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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