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Ultrafast and highly sensitive infrared photodetectors based on two-dimensional oxyselenide crystals

Author

Listed:
  • Jianbo Yin

    (Peking University)

  • Zhenjun Tan

    (Peking University
    Peking University)

  • Hao Hong

    (Peking University)

  • Jinxiong Wu

    (Peking University)

  • Hongtao Yuan

    (Nanjing University)

  • Yujing Liu

    (Peking University)

  • Cheng Chen

    (University of Oxford)

  • Congwei Tan

    (Peking University)

  • Fengrui Yao

    (Peking University)

  • Tianran Li

    (Peking University)

  • Yulin Chen

    (University of Oxford)

  • Zhongfan Liu

    (Peking University
    Peking University)

  • Kaihui Liu

    (Peking University
    Peking University)

  • Hailin Peng

    (Peking University
    Peking University)

Abstract

Infrared light detection and sensing is deeply embedded in modern technology and human society and its development has always been benefitting from the discovery of various photoelectric materials. The rise of two-dimensional materials, thanks to their distinct electronic structures, extreme dimensional confinement and strong light–matter interactions, provides a material platform for next-generation infrared photodetection. Ideal infrared detectors should have fast respond, high sensitivity and air-stability, which are rare to meet at the same time in one two-dimensional material. Herein we demonstrate an infrared photodetector based on two-dimensional Bi2O2Se crystal, whose main characteristics are outstanding in the whole two-dimensional family: high sensitivity of 65 AW−1 at 1200 nm and ultrafast photoresponse of ~1 ps at room temperature, implying an intrinsic material-limited bandwidth up to 500 GHz. Such great performance is attributed to the suitable electronic bandgap and high carrier mobility of two-dimensional oxyselenide.

Suggested Citation

  • Jianbo Yin & Zhenjun Tan & Hao Hong & Jinxiong Wu & Hongtao Yuan & Yujing Liu & Cheng Chen & Congwei Tan & Fengrui Yao & Tianran Li & Yulin Chen & Zhongfan Liu & Kaihui Liu & Hailin Peng, 2018. "Ultrafast and highly sensitive infrared photodetectors based on two-dimensional oxyselenide crystals," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05874-2
    DOI: 10.1038/s41467-018-05874-2
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    Cited by:

    1. Cheng-Yi Zhu & Zimeng Zhang & Jing-Kai Qin & Zi Wang & Cong Wang & Peng Miao & Yingjie Liu & Pei-Yu Huang & Yao Zhang & Ke Xu & Liang Zhen & Yang Chai & Cheng-Yan Xu, 2023. "Two-dimensional semiconducting SnP2Se6 with giant second-harmonic-generation for monolithic on-chip electronic-photonic integration," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Shaofu Xu & Jing Wang & Sicheng Yi & Weiwen Zou, 2022. "High-order tensor flow processing using integrated photonic circuits," Nature Communications, Nature, vol. 13(1), pages 1-10, December.

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