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Self-trapped state enabled filterless narrowband photodetections in 2D layered perovskite single crystals

Author

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  • Junze Li

    (Huazhong University of Science and Technology)

  • Jun Wang

    (Huazhong University of Science and Technology)

  • Jiaqi Ma

    (Huazhong University of Science and Technology)

  • Hongzhi Shen

    (Huazhong University of Science and Technology)

  • Lu Li

    (Huazhong University of Science and Technology)

  • Xiangfeng Duan

    (University of California)

  • Dehui Li

    (Huazhong University of Science and Technology
    Huazhong University of Science and Technology)

Abstract

Filterless narrowband photodetectors can realize color discrimination without filter or bulk spectrometer, thus greatly reducing the system volume and cost for many imaging applications. Charge collection narrowing has been demonstrated to be a successful approach to achieve filterless narrowband photodetections; nevertheless, it sacrifices the sensitivity of the photodetectors. Here we show a highly tunable narrowband photodetector based on two-dimensional perovskite single crystals with high external quantum efficiency (200%), ultralow dark current (10−12 A), and high on–off ratio (103). The spectral response of the narrowband photodetectors can be continuously tuned from red to blue with all full-width at half-maximum

Suggested Citation

  • Junze Li & Jun Wang & Jiaqi Ma & Hongzhi Shen & Lu Li & Xiangfeng Duan & Dehui Li, 2019. "Self-trapped state enabled filterless narrowband photodetections in 2D layered perovskite single crystals," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-08768-z
    DOI: 10.1038/s41467-019-08768-z
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    Cited by:

    1. Xiaopeng Feng & Yuhong He & Wei Qu & Jinmei Song & Wanting Pan & Mingrui Tan & Bai Yang & Haotong Wei, 2022. "Spray-coated perovskite hemispherical photodetector featuring narrow-band and wide-angle imaging," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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