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Special Issue "The Research and Application of Graphene Phototransducer"

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Sensor Materials".

Deadline for manuscript submissions: 30 December 2020.

Special Issue Editors

Prof. Dr. Pilgyu Kang
Website
Guest Editor
Department of Mechanical Engineering, George Mason University, 4439 Nguyen Engineering Building, 4400 University Dr, MS 6E9, Fairfax, VA 22030, USA
Interests: micro/nano mechanics; micro/nano photonics; micro/nano manufacturing; 2D materials; nanomaterials; laser-induced graphene; structured 2D materials; nano bio sensors; opto-electronics; flexible electronics & opto-electronics; plasmonics; opto-fluidics; microfluidics
Prof. Dr. Houlong Zhuang
Website
Guest Editor
Arizona State University, Tempe, United States
Interests: Two-dimensional materials; Materials theory; Materials modeling; Quantum materials; Defects in semiconductors; Light-matter interactions
Prof. Dr. Kyoung-Ho Kim
Website
Guest Editor
Department of Physics, Chungbuk National University, Republic of Korea
Interests: Nanoplasmonics; nanolasers; nanowires; infrared photonics; graphene plasmonics

Special Issue Information

Dear Colleagues,

Phototransducers convert light into electrical signals, and are widely used for various applications including biomedical imaging, optical communications, military (e.g., night vision and security), remote and environmental sensing, etc. Two-dimensional materials such as graphene and transition metal dichalcogenide monolayers (TMDs) have emerged as optical functional materials, which are used as photosensitive materials to develop photodetectors. Especially, graphene has been a center of research due to its extraordinary material properties including broadband light absorption, high mobility, electrostatic tunability, transparency, as well as mechanical strength and flexibility. 2D materials including graphene and various TMDs (e.g., MoS2) allow for wafer-scale production, low cost, and large-scale integration. 2D materials and their hybrid systems (e.g., heterostructures of bilayered 2D materials) offer broadband and ultrafast response from ultraviolet, visible, infrared, and terahertz frequency ranges. Moreover, phototransducers based on 2D hybrid systems combined with other material platforms such as plasmonic nanoparticles and structures, perovskites, quantum dots, and other nanomaterials enable ultrasensitive light detection with broadband capability. This Special Issue will focus on the current state-of-the-art research and applications of photodetectors based on graphene and graphene-related materials (e.g., reduced graphene oxides) as well as hybrid systems realized by the combination of different 2D materials or of 2D materials and other materials including plasmonic nanoparticles and structures, perovskites, quantum dots, organic materials, and other nanomaterials.

Dr. Pilgyu Kang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • graphene
  • two-dimensional (2D) materials
  • 2D transition metal dichalcogenide monolayers (TMDs)
  • heterostructures
  • phototransducers
  • photodetectors
  • photosensors
  • phototransistors
  • photodiodes
  • plasmonic nanoparticles and structures
  • perovskites
  • quantum dots
  • nanomaterials
  • responsivity
  • broadband
  • ultraviolet
  • visible
  • infrared
  • terahertz

Published Papers (1 paper)

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Research

Open AccessArticle
Graphene Electro-Optical Switch Modulator by Adjusting Propagation Length Based on Hybrid Plasmonic Waveguide in Infrared Band
Sensors 2020, 20(10), 2864; https://doi.org/10.3390/s20102864 - 18 May 2020
Abstract
A modulator is the core of many optoelectronic applications such as communication and sensing. However, a traditional modulator can hardly reach high modulation depth. In order to achieve the higher modulation depth, a graphene electro-optical switch modulator is proposed by adjusting propagation length [...] Read more.
A modulator is the core of many optoelectronic applications such as communication and sensing. However, a traditional modulator can hardly reach high modulation depth. In order to achieve the higher modulation depth, a graphene electro-optical switch modulator is proposed by adjusting propagation length in the near infrared band. The switch modulator is designed based on a hybrid plasmonic waveguide structure, which is comprised of an SiO2 substrate, graphene–Si–graphene heterostructure, Ag nanowire and SiO2 cladding. The propagation length of the hybrid plasmonic waveguide varies from 0.14 μm to 20.43 μm by the voltage tunability of graphene in 1550 nm incident light. A modulator with a length of 3 μm is designed based on the hybrid waveguide and it achieves about 100% modulation depth. The lower energy loss (~1.71 fJ/bit) and larger 3 dB bandwidth (~83.91 GHz) are attractive for its application in a photoelectric integration field. In addition, the excellent robustness (error of modulation effects lower than 8.84%) is practical in the fabrication process. Most importantly, by using the method of adjusting propagation length, other types of graphene modulators can also achieve about 100% modulation depth. Full article
(This article belongs to the Special Issue The Research and Application of Graphene Phototransducer)
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