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Realizing nearly-zero dark current and ultrahigh signal-to-noise ratio perovskite X-ray detector and image array by dark-current-shunting strategy

Author

Listed:
  • Peng Jin

    (Zhejiang University)

  • Yingjie Tang

    (Westlake University
    Zhejiang University)

  • Dingwei Li

    (Westlake University
    Zhejiang University)

  • Yan Wang

    (Westlake University
    Zhejiang University)

  • Peng Ran

    (Zhejiang University)

  • Chuanyu Zhou

    (Zhejiang University)

  • Ye Yuan

    (Wuhan University of Technology)

  • Wenjuan Zhu

    (Zhejiang University
    Nanjing University of Posts and Telecommunications)

  • Tianyu Liu

    (Zhejiang University)

  • Kun Liang

    (Westlake University
    Zhejiang University)

  • Cuifang Kuang

    (Zhejiang University
    Intelligent Optics & Photonics Research Center Jiaxing Institute of Zhejiang University)

  • Xu Liu

    (Zhejiang University)

  • Bowen Zhu

    (Westlake University)

  • Yang (Michael) Yang

    (Zhejiang University
    Intelligent Optics & Photonics Research Center Jiaxing Institute of Zhejiang University)

Abstract

Although perovskite X-ray detectors have revealed promising properties, their dark currents are usually hundreds of times larger than the practical requirements. Here, we report a detector architecture with a unique shunting electrode working as a blanking unit to suppress dark current, and it theoretically can be reduced to zero. We experimentally fabricate the dark-current-shunting X-ray detector, which exhibits a record-low dark current of 51.1 fA at 5 V mm−1, a detection limit of 7.84 nGyair s−1, and a sensitivity of 1.3 × 104 μC Gyair−1 cm−2. The signal-to-noise ratio of our polycrystalline perovskite-based detector is even outperforming many previously reported state-of-the-art single crystal-based X-ray detectors by serval orders of magnitude. Finally, the proof-of-concept X-ray imaging of a 64 × 64 pixels dark-current-shunting detector array is successfully demonstrated. This work provides a device strategy to fundamentally reduce dark current and enhance the signal-to-noise ratio of X-ray detectors and photodetectors in general.

Suggested Citation

  • Peng Jin & Yingjie Tang & Dingwei Li & Yan Wang & Peng Ran & Chuanyu Zhou & Ye Yuan & Wenjuan Zhu & Tianyu Liu & Kun Liang & Cuifang Kuang & Xu Liu & Bowen Zhu & Yang (Michael) Yang, 2023. "Realizing nearly-zero dark current and ultrahigh signal-to-noise ratio perovskite X-ray detector and image array by dark-current-shunting strategy," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-36313-6
    DOI: 10.1038/s41467-023-36313-6
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    References listed on IDEAS

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    1. Dou Zhao & Ruiling Gao & Wei Cheng & Mengyao Wen & Xinlei Zhang & Tomoyuki Yokota & Paul Sellin & Shengyuan A. Yang & Li Shang & Chongjian Zhou & Takao Someya & Wanqi Jie & Yadong Xu, 2024. "Heavy-to-light electron transition enabling real-time spectra detection of charged particles by a biocompatible semiconductor," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    2. Yingjie Tang & Peng Jin & Yan Wang & Dingwei Li & Yitong Chen & Peng Ran & Wei Fan & Kun Liang & Huihui Ren & Xuehui Xu & Rui Wang & Yang (Michael) Yang & Bowen Zhu, 2023. "Enabling low-drift flexible perovskite photodetectors by electrical modulation for wearable health monitoring and weak light imaging," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    3. Jingxian Zhong & Dawei Zhou & Qi Bai & Chao Liu & Xinlian Fan & Hehe Zhang & Congzhou Li & Ran Jiang & Peiyi Zhao & Jiaxiao Yuan & Xiaojiao Li & Guixiang Zhan & Hongyu Yang & Jing Liu & Xuefen Song & , 2024. "Growth of millimeter-sized 2D metal iodide crystals induced by ion-specific preference at water-air interfaces," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    4. Zihao Song & Xinyuan Du & Xin He & Hanqi Wang & Zhiqiang Liu & Haodi Wu & Hongde Luo & Libo Jin & Ling Xu & Zhiping Zheng & Guangda Niu & Jiang Tang, 2023. "Rheological engineering of perovskite suspension toward high-resolution X-ray flat-panel detector," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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