Hybrid Dirac semimetal-based photodetector with efficient low-energy photon harvesting

Lin Wang; Li Han; Wanlong Guo; Libo Zhang; Chenyu Yao; Zhiqingzi Chen; Yulu Chen; Cheng Guo; Kaixuan Zhang; Chia-Nung Kuo; Chin Shan Lue; Antonio Politano; Huaizhong Xing; Mengjie Jiang; Xianbin Yu; Xiaoshuang Chen; Wei Lu

doi:10.1038/s41377-022-00741-8

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Hybrid Dirac semimetal-based photodetector with efficient low-energy photon harvesting

Articles

- Hybrid Dirac semimetal-based photodetector with efficient low-energy photon harvesting
- Light: Science & Applications Vol. 11, Issue 3, Pages: 396-405(2022)
- Affiliations：
  
  1.State Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu-tian Road, Shanghai, 200083, China
  2.Department of Optoelectronic Science and Engineering, Donghua University, Shanghai, 201620, China
  3.College of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, No. 1, Sub-Lane Xiangshan, Xihu District, Hangzhou, 310024, China
  4.School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
  5.The 50th Research Institute of China Electronics Technology Group, Shanghai, 200331, China
  6.Research Center for Intelligent Network, Zhejiang Lab, Hangzhou, 311121, China
  7.Department of Physics, Cheng Kung University, 1 Ta-Hsueh Road, 70101, Tainan, Taiwan, China
  8.INSTM and Department of Physical and Chemical Sciences, University of L'Aquila, via Vetoio, 67100, L'Aquila (AQ), Italy
  9.CNR-IMM Istituto per la Microelettronica e Microsistemi, VIII strada 5, I-95121, Catania, Italy
- Author bio：
  
  Lin Wang (wanglin@mail.sitp.ac.cn)
  Antonio Politano (antonio.politano@univaq.it)
- Funds：
- DOI：10.1038/s41377-022-00741-8
  CLC：
- Published：31 March 2022，
  
  Published Online：10 March 2022，
  
  Received：09 September 2021，
  
  Revised：26 January 2022，
  
  Accepted：14 February 2022
- Accepted：
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Wang, L. et al. Hybrid Dirac semimetal-based photodetector with efficient low-energy photon harvesting. Light: Science & Applications, 11, 396-405 (2022).
DOI：

Wang, L. et al. Hybrid Dirac semimetal-based photodetector with efficient low-energy photon harvesting. Light: Science & Applications, 11, 396-405 (2022). DOI： 10.1038/s41377-022-00741-8.

摘要

Abstract

Despite the considerable effort

fast and highly sensitive photodetection is not widely available at the low-photon-energy range (~meV) of the electromagnetic spectrum

owing to the challenging light funneling into small active areas with efficient conversion into an electrical signal. Here

we provide an alternative strategy by efficiently integrating and manipulating at the nanoscale the optoelectronic properties of topological Dirac semimetal PtSe

and its van der Waals heterostructures. Explicitly

we realize strong plasmonic antenna coupling to semimetal states near the skin-depth regime (λ/10

)

featuring colossal photoresponse by in-plane symmetry break

ing. The observed spontaneous and polarization-sensitive photocurrent are correlated to strong coupling with the nonequilibrium states in PtSe

Dirac semimetal

yielding efficient light absorption in the photon range below 1.24 meV with responsivity exceeding ~0.2 A/W and noise-equivalent power (NEP) less than ~38 pW/Hz

0.5

as well as superb ambient stability. Present results pave the way to efficient engineering of a topological semimetal for high-speed and low-energy photon harvesting in areas such as biomedical imaging

remote sensing or security applications.

关键词

Keywords

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