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Cited by 260Photonic and Optical DevicesPlasmonic and Surface Plasmon ResearchGraphene research and applications

High-performance silicon−graphene hybrid plasmonic waveguide photodetectors beyond 1.55 μm

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Guo, Jingshu, Li, Jiang, Liu, Chaoyue, Yin, Yanlong, Wang, Wenhui, Ni, Zhenhua, Fu, Zhilei, Yu, Hui +6 more·2020·Light: Science & Applications
DOI 10.1038/s41377-020-0263-6PMC PMC7048841
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Abstract

Graphene has attracted much attention for the realization of high-speed photodetection for silicon photonics over a wide wavelength range. However, the reported fast graphene photodetectors mainly operate in the 1.55 μm wavelength band. In this work, we propose and realize high-performance waveguide photodetectors based on bolometric/photoconductive effects by introducing an ultrathin wide silicon−graphene hybrid plasmonic waveguide, which enables efficient light absorption in graphene at 1.55 μm and beyond. When operating at 2 μm, the present photodetector has a responsivity of ~70 mA/W and a setup-limited 3 dB bandwidth of >20 GHz. When operating at 1.55 μm, the present photodetector also works very well with a broad 3 dB bandwidth of >40 GHz (setup-limited) and a high responsivity of ~0.4 A/W even with a low bias voltage of −0.3 V. This work paves the way for achieving high-responsivity and high-speed silicon–graphene waveguide photodetection in the near/mid-infrared ranges, which has applications in optical communications, nonlinear photonics, and on-chip sensing.

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  • 2D materials face challenges in achieving high responsivity (0.07-0.3 A/W at a wavelength of 2-3 μm) and scalable integration.

    “However, they face challenges in achieving high responsivity (0.07-0.3 A/W at a wavelength of 2-3 μ m) 11,12,49 and scalable integration.”

    From A silicon photonics waveguide-coupled colloidal quantum dot photodiode sensitive beyond 1.6 <i>µ</i>m (2024) · cites this paper as [12]

    The Results (Measurement results and analyses; page not provided) report 70 mA/W, or 0.07 A/W, for a graphene photodetector at 2 μm, supporting the lower end of the cited range. Our copy does not establish 0.3 A/W across 2–3 μm. The Introduction instead says large graphene sheets can be readily transferred and patterned in a wafer process line, so it does not support the claimed scalable-integration challenge. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

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Cited by

Sorted by citations

Authors
Guo, J., Li, J., Liu, C., Yin, Y., Wang, W., Ni, Z., Fu, Z., Yu, H., Xu, Y., Shi, Y., Ma, Y., Gao, S., Tong, L., & Dai, D.
Affiliations
  • State Key Laboratory of Modern Optical Instruments (CN)
  • Southeast University (CN)
  • Zhejiang University (CN)
ORCID
Venue
Light: Science & Applications
Publisher
Springer Science and Business Media LLC
Published
2020-02-28
Volume
9
Issue
1
Pages
29-29
ISSN
2047-7538 (ISSN-L)
DOI
10.1038/s41377-020-0263-6
PMC
PMC7048841
OpenAlex
W3009208237
Cited by
260
References
1
Citations by year
2026: 25 · 2025: 32 · 2024: 51 · 2023: 43 · 2022: 39 · 2021: 45 · 2020: 23 · 2018: 1
FWCI
12.88
Type
journal article
Language
en
Open access
Licence
Locations
  • Light Science & Applications (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • Figshare (submittedVersion, public-domain)
  • arXiv (Cornell University)
Funders
  • National Natural Science Foundation of China (61905210)
  • China Postdoctoral Science Foundation (2019M662041)
  • Natural Science Foundation of Zhejiang Province (LD19F050001)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Photonic and Optical Devices
  • Physical Sciences › Engineering › Biomedical Engineering › Plasmonic and Surface Plasmon Research
  • Physical Sciences › Materials Science › Materials Chemistry › Graphene research and applications
Keywords
graphene photodetectors, near-infrared photodetection, mid-infrared photodetection, photoconductivity, bolometric effect, high-speed photodetection, responsivity, bandwidth, silicon photonics

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