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Two Dimensional Materials for Nano-Electronics Application

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 3613

Special Issue Editor


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Guest Editor
Institut National de la Recherche Scientifique-Energy, Materials, and Telecommunication EMT Centre (EMT-INRS) 1650, Boulevard Lionel-Boulet, Varennes, QC J3X 1 S2, Canada
Interests: 2D-Field Effect Transistor on Transition metal Dichalcogenide (TMDCs); graphene; CMOS; photodetection; magnetoresistance
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Special Issue Information

Dear colleagues,

Two-dimensional material are currently gaining increasing interest in electronics/optoelectronics, as they allow us to extend the performance of traditional semiconductor devices or to demonstrate completely new device concepts and exciting physics.

Field effect transistors based on 2D semiconductors such as transition metal dichalcogenides (MoS2, WSe2, MoTe2, etc.) can have high speed and low power consumption compared to those with conventional dimensional semiconductors, and the ability to scale down to the nanoscale. In addition, 2D materials can respond to broadband light, electromagnetic wave, magnetic field, thermal and mechanical stress, and sense various chemicals, gases, and biomolecules. They also have the ability to adapt to different flexible and stretchable substrates, leading to numerous applications across noncomputing components, sensors, human–machine interfaces, wireless communication modules, and other passive devices. However, such promising applications will only be possible with much research effort at all levels. Two-dimensional material are promising material to address the current the challenge of dimension reduction.

For this Special Issue, we welcome the submission of original research articles, communications, and reviews on recent advances in graphene and/or novel 2D materials and the electronic devices, and applications that use them.

Dr. Atiye Pezeshki
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 submissions that pass pre-check are 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. Molecules 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 2700 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
  • Transition metal dichalcogenides
  • Field effect transistor
  • Magnetoresistance
  • Complementary inverter

Published Papers (2 papers)

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Research

15 pages, 2615 KiB  
Article
The Influence of Lateral Size and Oxidation of Graphene Oxide on Its Chemical Reduction and Electrical Conductivity of Reduced Graphene Oxide
by Hak Jin Sim, Zheling Li, Ping Xiao and Hui Lu
Molecules 2022, 27(22), 7840; https://0-doi-org.brum.beds.ac.uk/10.3390/molecules27227840 - 14 Nov 2022
Cited by 6 | Viewed by 1386
Abstract
The chemical reduction efficiencies of graphene oxide (GO) are critically important in achieving graphene-like properties in reduced graphene oxide (rGO). In this study, we assessed GO lateral size and its degree of oxidation effect on its chemical reduction efficiency in both suspension and [...] Read more.
The chemical reduction efficiencies of graphene oxide (GO) are critically important in achieving graphene-like properties in reduced graphene oxide (rGO). In this study, we assessed GO lateral size and its degree of oxidation effect on its chemical reduction efficiency in both suspension and film and the electrical conductivity of the corresponding rGO films. We show that while GO-reduction efficiency increases with the GO size of lower oxidation in suspension, the trend is opposite for film. FESEM, XRD, and Raman analyses reveal that the GO reduction efficiency in film is affected not only by GO size and degree of oxidation but also by its interlayer spacing (restacking) and the efficiency is tunable based on the use of mixed GO. Moreover, we show that the electrical conductivity of rGO films depends linearly on the C/O and Raman ID/IG ratio of rGO and not the lateral size of GO. In this study, an optimal chemical reduction was achieved using premixed large and small GO (L/SGO) at a ratio of 3:1 (w/w). Consequently, the highest electrical conductivity of 85,283 S/m was achieved out of all rGO films reported so far. We hope that our findings may help to pave the way for a simple and scalable method to fabricate tunable, electrically conductive rGO films for electronic applications. Full article
(This article belongs to the Special Issue Two Dimensional Materials for Nano-Electronics Application)
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13 pages, 6083 KiB  
Article
Enhanced Sensitivity of CO on Two-Dimensional, Strained, and Defective GaSe
by Hsin-Pan Huang, Huei-Ru Fuh and Ching-Ray Chang
Molecules 2021, 26(4), 812; https://0-doi-org.brum.beds.ac.uk/10.3390/molecules26040812 - 04 Feb 2021
Cited by 5 | Viewed by 1800
Abstract
The toxic gas carbon monoxide (CO) is fatal to human beings and it is hard to detect because of its colorless and odorless properties. Fortunately, the high surface-to-volume ratio of the gas makes two-dimensional (2D) materials good candidates for gas sensing. This article [...] Read more.
The toxic gas carbon monoxide (CO) is fatal to human beings and it is hard to detect because of its colorless and odorless properties. Fortunately, the high surface-to-volume ratio of the gas makes two-dimensional (2D) materials good candidates for gas sensing. This article investigates CO sensing efficiency with a two-dimensional monolayer of gallium selenide (GaSe) via the vacancy defect and strain effect. According to the computational results, defective GaSe structures with a Se vacancy have a better performance in CO sensing than pristine ones. Moreover, the adsorption energy gradually increases with the scale of tensile strain in defective structures. The largest adsorption energy reached −1.5 eV and the largest charger transfer was about −0.77 e. Additionally, the CO gas molecule was deeply dragged into the GaSe surface. We conclude that the vacancy defect and strain effect transfer GaSe to a relatively unstable state and, therefore, enhance CO sensitivity. The adsorption rate can be controlled by adjusting the strain scale. This significant discovery makes the monolayer form of GaSe a promising candidate in CO sensing. Furthermore, it reveals the possibility of the application of CO adsorption, transportation, and releasement. Full article
(This article belongs to the Special Issue Two Dimensional Materials for Nano-Electronics Application)
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