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Cation-π interactions enabled water-stable perovskite X-ray flat mini-panel imager

Author

Listed:
  • Wanting Pan

    (Jilin University)

  • Yuhong He

    (Jilin University)

  • Weijun Li

    (Jilin University)

  • Lulu Liu

    (Jilin University)

  • Keke Guo

    (Jilin University)

  • Jianglei Zhang

    (Jilin University)

  • Chao Wang

    (Jilin University)

  • Bao Li

    (Jilin University)

  • Hu Huang

    (Jilin University)

  • Junhu Zhang

    (Jilin University
    The First Hospital of Jilin University)

  • Bai Yang

    (Jilin University
    The First Hospital of Jilin University)

  • Haotong Wei

    (Jilin University
    The First Hospital of Jilin University)

Abstract

Sensitive and stable perovskite X-ray detectors are attractive in low-dosage medical examinations. The high sensitivity, tunable chemical compositions, electronic dimensions, and low-cost raw materials make perovskites promising next-generation semiconductors. However, their ionic nature brings serious concerns about their chemical and water stability, limiting their applications in well-established technologies like crystal polishing, micro-processing, photolithography, etc. Herein we report a one-dimensional tryptamine lead iodide perovskite, which is stable in water for several months as the strong cation-π interactions between organic cations. The one-dimensional and two-dimensional tryptamine lead iodide perovskite tablets are switchable through thermal-annealing or water-soaking treatments to relax microstrains. The water-stable and microstrain-free one-dimensional perovskite tablets yield a large sensitivity of 2.5 × 106 μC Gyair−1 cm−2 with the lowest detectable dose rate of 5 nGyair s−1. Microelectrode arrays are realized by surface photolithography to construct high-performance X-ray flat mini-panels with good X-ray imaging capability, and a record spatial resolution of 17.2 lp mm−1 is demonstrated.

Suggested Citation

  • Wanting Pan & Yuhong He & Weijun Li & Lulu Liu & Keke Guo & Jianglei Zhang & Chao Wang & Bao Li & Hu Huang & Junhu Zhang & Bai Yang & Haotong Wei, 2024. "Cation-π interactions enabled water-stable perovskite X-ray flat mini-panel imager," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-023-44644-7
    DOI: 10.1038/s41467-023-44644-7
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    References listed on IDEAS

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    1. Haotong Wei & Jinsong Huang, 2019. "Halide lead perovskites for ionizing radiation detection," Nature Communications, Nature, vol. 10(1), pages 1-12, December.
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