Ultrafast and broadband photodetectors based on a perovskite/organic bulk heterojunction for large-dynamic-range imaging

Chenglong Li; Hailu Wang; Fang Wang; Tengfei Li; Mengjian Xu; Hao Wang; Zhen Wang; Xiaowei Zhan; Weida Hu; Liang Shen

doi:10.1038/s41377-020-0264-5

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Ultrafast and broadband photodetectors based on a perovskite/organic bulk heterojunction for large-dynamic-range imaging

Article

- Ultrafast and broadband photodetectors based on a perovskite/organic bulk heterojunction for large-dynamic-range imaging
- Light: Science & Applications Vol. 9, Issue 2, Pages: 285-292(2020)
- Affiliations：
  
  1.State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
  2.State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yutian Road, Shanghai 200083, China
  3.University of Chinese Academy of Sciences, Beijing 100049, China
  4.Department of Materials Science and Engineering, College of Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, China
- Author bio：
  
  Fang Wang (fwang@mail.sitp.ac.cn)
  Weida Hu (wdhu@mail.sitp.ac.cn)
  Liang Shen (shenliang@jlu.edu.cn)
- Funds：
- DOI：10.1038/s41377-020-0264-5
  CLC：
- Published：2020，
  
  Published Online：03 March 2020，
  
  Received：01 December 2019，
  
  Revised：28 January 2020，
  
  Accepted：15 February 2020
- Accepted：
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Li, C. L. et al. Ultrafast and broadband photodetectors based on a perovskite/organic bulk heterojunction for large-dynamic-range imaging. Light: Science & Applications, 9, 285-292 (2020).
DOI：

Li, C. L. et al. Ultrafast and broadband photodetectors based on a perovskite/organic bulk heterojunction for large-dynamic-range imaging. Light: Science & Applications, 9, 285-292 (2020). DOI： 10.1038/s41377-020-0264-5.

摘要

Abstract

Organic-inorganic hybrid perovskite (OIHP) photodetectors that simultaneously achieve an ultrafast response and high sensitivity in the near-infrared (NIR) region are prerequisites for expanding current monitoring

imaging

and optical communication capbilities. Herein

we demonstrate photodetectors constructed by OIHP and an organic bulk heterojunction (BHJ) consisting of a low-bandgap nonfullerene and polymer

which achieve broadband response spectra up to 1 μm with a highest external quantum efficiency of approximately 54% at 850 nm

an ultrafast response speed of 5.6 ns and a linear dynamic range (LDR) of 191 dB. High sensitivity

ultrafast speed and a large LDR are preeminent prerequisites for the practical application of photodetectors. Encouragingly

due to the high-dynamicrange imaging capacity

high-quality visible-NIR actual imaging is achieved by employing the OIHP photodetectors. We believe that state-of-the-art OIHP photodetectors can accelerate the translation of solution-processed photodetector applications from the laboratory to the imaging market.

关键词

Keywords

references

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