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Plasmonic and Photonic Nanostructures for Sensing and Solar Energy Conversion Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Materials Physics".

Deadline for manuscript submissions: closed (10 April 2023) | Viewed by 7299

Special Issue Editors


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Guest Editor
Section of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, University Campus, GR-157 84 Zografou, Athens
Interests: photocatalytic materials; nanostructured titanium dioxide; carbon nanomaterials; metal oxides
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Section of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, University Campus, Zografou, GR-15784 Athens, Greece
Interests: semiconductors; nanoelectronics; solar cells; photonics; low dimensional structures; spintronics; MEMS

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Guest Editor
Immunoassay/Immunosensors Lab, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, NCSR “Demokritos”, 15310 Aghia Paraskevi, Greece
Interests: immunoassays and immunosensors for biological markers; environmental or food hazard; new substrates and methods for biomolecule immobilization and/or detection; development and evaluation of bioanalytical microsystems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Photonic and plasmonic nanostructures have nowadays emerged as one of the most potent means to confine and manipulate light–matter interactions at the nanoscale towards transformative research and technological developments in different fields ranging from optoelectronics and sensors to solar energy conversion. Controlling the size, shape and dispersion of plasmonic nanomaterials, along with the periodicity and interfaces of photonic nanostructures, has paved the way for the rational design and engineering of nanomaterials and devices for target applications, including optical sensors, photocatalysis, hydrogen evolution, photovoltaics, and chemical fuels.

This Special Issue aims to present recent advances in functional photonic and plasmonic nanostructures and plasmonic–photonic hybrids with tailored properties for photo-induced applications such as photocatalytic water/air purification; hydrogen and chemical fuel production; optical sensors, including substrates for surface enhanced Raman scattering (SERS); biodiagnostics; and solar cells. Particular emphasis will be given to nanomaterial growth and processing techniques, heterostructuring, interface engineering, and theoretical modeling in order to promote photon capture, electromagnetic field enhancement, hot electron generation, and charge separation/transfer that are key factors in biosensor and solar energy conversion applications.

We cordially invite you to contribute your recent work including review articles, original papers, and communications to this Special Issue, focusing on, but not limited to, the above topics.

Prof. Dr. Vlassios Likodimos
Prof. Dr. Spiros Gardelis
Prof. Dr. Panagiota S. Petrou
Guest Editors

Manuscript Submission Information

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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. Materials 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 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

  • plasmonic nanomaterials
  • photonic materials and devices
  • optical microcavities and resonators
  • hybrid plasmonic-photonic structures
  • photonic crystals
  • plasmonic photocatalysis
  • plasmonic and dielectric SERS
  • optical biosensors
  • solar cells
  • hydrogen production

Published Papers (4 papers)

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Research

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13 pages, 6144 KiB  
Article
Enhanced Photoluminescence of R6G Dyes from Metal Decorated Silicon Nanowires Fabricated through Metal Assisted Chemical Etching
by Ioannis Kochylas, Anastasios Dimitriou, Maria-Athina Apostolaki, Maria-Christina Skoulikidou, Vlassios Likodimos, Spiros Gardelis and Nikolaos Papanikolaou
Materials 2023, 16(4), 1386; https://0-doi-org.brum.beds.ac.uk/10.3390/ma16041386 - 07 Feb 2023
Cited by 4 | Viewed by 1495
Abstract
In this study, we developed active substrates consisting of Ag-decorated silicon nanowires on a Si substrate using a single-step Metal Assisted Chemical Etching (MACE) process, and evaluated their performance in the identification of low concentrations of Rhodamine 6G using surface-enhanced photoluminescence spectroscopy. Different [...] Read more.
In this study, we developed active substrates consisting of Ag-decorated silicon nanowires on a Si substrate using a single-step Metal Assisted Chemical Etching (MACE) process, and evaluated their performance in the identification of low concentrations of Rhodamine 6G using surface-enhanced photoluminescence spectroscopy. Different structures with Ag-aggregates as well as Ag-dendrites were fabricated and studied depending on the etching parameters. Moreover, the addition of Au nanoparticles by simple drop-casting on the MACE-treated surfaces can enhance the photoluminescence significantly, and the structures have shown a Limit of Detection of Rhodamine 6G down to 1012 M for the case of the Ag-dendrites enriched with Au nanoparticles. Full article
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10 pages, 2101 KiB  
Article
Seed Layer Optimisation for Ultra-Thin Sb2Se3 Solar Cells on TiO2 by Vapour Transport Deposition
by Remigijus Juškėnas, Arnas Naujokaitis, Audrius Drabavičius, Vidas Pakštas, Deividas Vainauskas and Rokas Kondrotas
Materials 2022, 15(23), 8356; https://0-doi-org.brum.beds.ac.uk/10.3390/ma15238356 - 24 Nov 2022
Viewed by 1315
Abstract
Antimony selenide (Sb2Se3) material has drawn considerable attention as an Earth-abundant and non-toxic photovoltaic absorber. The power conversion efficiency of Sb2Se3-based solar cells increased from less than 2% to over 10% in a decade. Different [...] Read more.
Antimony selenide (Sb2Se3) material has drawn considerable attention as an Earth-abundant and non-toxic photovoltaic absorber. The power conversion efficiency of Sb2Se3-based solar cells increased from less than 2% to over 10% in a decade. Different deposition methods were implemented to synthesize Sb2Se3 thin films, and various device structures were tested. In search of a more environmentally friendly device composition, the common CdS buffer layer is being replaced with oxides. It was identified that on oxide substrates such as TiO2 using vacuum-based close-space deposition methods, an intermediate deposition step was required to produce high-quality thin films. However, little or no investigation was carried out using another very successful vacuum deposition approach in Sb2Se3 technology called vapour transport deposition (VTD). In this work, we present optimized VTD process conditions to achieve compact, pinhole-free, ultra-thin (<400 nm) Sb2Se3 absorber layers. Three process steps were designed to first deposit the seed layer, then anneal it and, at the final stage, deposit a complete Sb2Se3 absorber. Fabricated solar cells using absorbers as thin as 400 nm generated a short-circuit current density over 30 mA/cm2, which demonstrates both the very high absorption capabilities of Sb2Se3 material and the prospects for ultra-thin solar cell application. Full article
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17 pages, 5665 KiB  
Article
Visible Light Trapping against Charge Recombination in FeOx–TiO2 Photonic Crystal Photocatalysts
by Martha Pylarinou, Alexia Toumazatou, Elias Sakellis, Evangelia Xenogiannopoulou, Spiros Gardelis, Nikos Boukos, Athanasios Dimoulas and Vlassis Likodimos
Materials 2021, 14(23), 7117; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14237117 - 23 Nov 2021
Cited by 4 | Viewed by 1815
Abstract
Tailoring metal oxide photocatalysts in the form of heterostructured photonic crystals has spurred particular interest as an advanced route to simultaneously improve harnessing of solar light and charge separation relying on the combined effect of light trapping by macroporous periodic structures and compositional [...] Read more.
Tailoring metal oxide photocatalysts in the form of heterostructured photonic crystals has spurred particular interest as an advanced route to simultaneously improve harnessing of solar light and charge separation relying on the combined effect of light trapping by macroporous periodic structures and compositional materials’ modifications. In this work, surface deposition of FeOx nanoclusters on TiO2 photonic crystals is investigated to explore the interplay of slow-photon amplification, visible light absorption, and charge separation in FeOx–TiO2 photocatalytic films. Photonic bandgap engineered TiO2 inverse opals deposited by the convective evaporation-induced co-assembly method were surface modified by successive chemisorption-calcination cycles using Fe(III) acetylacetonate, which allowed the controlled variation of FeOx loading on the photonic films. Low amounts of FeOx nanoclusters on the TiO2 inverse opals resulted in diameter-selective improvements of photocatalytic performance on salicylic acid degradation and photocurrent density under visible light, surpassing similarly modified P25 films. The observed enhancement was related to the combination of optimal light trapping and charge separation induced by the FeOx–TiO2 interfacial coupling. However, an increase of the FeOx loading resulted in severe performance deterioration, particularly prominent under UV-Vis light, attributed to persistent surface recombination via diverse defect d-states. Full article
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Review

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32 pages, 3383 KiB  
Review
SERS Immunosensors for Cancer Markers Detection
by Georgia Geka, Anastasia Kanioura, Vlassis Likodimos, Spiros Gardelis, Nikolaos Papanikolaou, Sotirios Kakabakos and Panagiota Petrou
Materials 2023, 16(10), 3733; https://0-doi-org.brum.beds.ac.uk/10.3390/ma16103733 - 15 May 2023
Cited by 4 | Viewed by 1699
Abstract
Early diagnosis and monitoring are essential for the effective treatment and survival of patients with different types of malignancy. To this end, the accurate and sensitive determination of substances in human biological fluids related to cancer diagnosis and/or prognosis, i.e., cancer biomarkers, is [...] Read more.
Early diagnosis and monitoring are essential for the effective treatment and survival of patients with different types of malignancy. To this end, the accurate and sensitive determination of substances in human biological fluids related to cancer diagnosis and/or prognosis, i.e., cancer biomarkers, is of ultimate importance. Advancements in the field of immunodetection and nanomaterials have enabled the application of new transduction approaches for the sensitive detection of single or multiple cancer biomarkers in biological fluids. Immunosensors based on surface-enhanced Raman spectroscopy (SERS) are examples where the special properties of nanostructured materials and immunoreagents are combined to develop analytical tools that hold promise for point-of-care applications. In this frame, the subject of this review article is to present the advancements made so far regarding the immunochemical determination of cancer biomarkers by SERS. Thus, after a short introduction about the principles of both immunoassays and SERS, an extended presentation of up-to-date works regarding both single and multi-analyte determination of cancer biomarkers is presented. Finally, future perspectives on the field of SERS immunosensors for cancer markers detection are briefly discussed. Full article
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