2D Materials for Opto-Electronics

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "D:Materials and Processing".

Deadline for manuscript submissions: closed (30 April 2023) | Viewed by 1880

Special Issue Editor


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Guest Editor
Department of Physical Sciences, P D Patel Institute of Applied Sciences, Charotar University of Science and Technology, CHARUSAT, Changa, Gujarat, India
Interests: 2D-Materials; Plasmonic materials; Water splitting; Opto-electronics

Special Issue Information

Dear Colleagues,

Two-dimensional materials, such as graphene, transition metal chalcogenides, phosphorene, and MXene, have gained considerable interest due to their application in opto-electronic devices, such as photodetectors, solar cells, and photoelectrochemical cells. They can absorb light in different ways (excitonic excitation, plasmonic excitation, thermal excitation, etc.) and convert it into electrical signals. They can act as narrow-band gap semiconductors, broad-band gap semiconductors, and metal plasmonic materials. In recent years, metal-doped semiconductors and metal/semiconductor hybrid materials have shown great potential in optimized light–matter interactions. A variety of optoelectronic devices based on heterostructures, homo-structures, Schottky junction, nanocomposites, etc., have shown great potential owing to their light absorption over a broad spectral range.

This research Topic is aimed at scientists from all over the world interested in research on opto-electronic devices who want to share their latest findings on optical phenomena, material design, characterization analysis, devices and applications. We will summarize the recent advancements and challenges in opto-electronic material, synthesis and device applications within a much broader scope. High-quality original research and review papers are welcome. Possible research themes include, but are not limited to, the following:

  • Novel photosensitive 2D-materials;
  • Broad-band, self-powered photodetectors;
  • Nanocrystals, quantum dots and nano-structured materials;
  • Novel designs for the fabrication of efficient solar cells;
  • Transparent and flexible opto-electronic devices.

Dr. Pratik M. Pataniya
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. Micromachines is an international peer-reviewed open access monthly 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 2600 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

  • 2D-materials
  • plasmonic materials
  • photodetector
  • solar cell
  • nanomaterials
  • optical properties

Published Papers (1 paper)

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Research

10 pages, 8400 KiB  
Article
Periodic Structural Defects in Graphene Sheets Engineered via Electron Irradiation
by Nicola Melchioni, Filippo Fabbri, Alessandro Tredicucci and Federica Bianco
Micromachines 2022, 13(10), 1666; https://doi.org/10.3390/mi13101666 - 3 Oct 2022
Cited by 2 | Viewed by 1428
Abstract
Artificially-induced defects in the lattice of graphene are a powerful tool for engineering the properties of the crystal, especially if organized in highly-ordered structures such as periodic arrays. A method to deterministically induce defects in graphene is to irradiate the crystal with low-energy [...] Read more.
Artificially-induced defects in the lattice of graphene are a powerful tool for engineering the properties of the crystal, especially if organized in highly-ordered structures such as periodic arrays. A method to deterministically induce defects in graphene is to irradiate the crystal with low-energy (<20 keV) electrons delivered by a scanning electron microscope. However, the nanometric precision granted by the focused beam can be hindered by the pattern irradiation itself due to the small lateral separation among the elements, which can prevent the generation of sharp features. An accurate analysis of the achievable resolution is thus essential for practical applications. To this end, we investigated patterns generated by low-energy electron irradiation combining atomic force microscopy and micro-Raman spectroscopy measurements. We proved that it is possible to create well-defined periodic patterns with precision of a few tens of nanometers. We found that the defected lines are influenced by electrons back-scattered by the substrate, which limit the achievable resolution. We provided a model that takes into account such substrate effects. The findings of our study allow the design and easily accessible fabrication of graphene devices featuring complex defect engineering, with a remarkable impact on technologies exploiting the increased surface reactivity. Full article
(This article belongs to the Special Issue 2D Materials for Opto-Electronics)
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