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Applied Sciences
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Luminescent Materials: Synthesis, Characterization and Application
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Luminescent Materials: Synthesis, Characterization and Application

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Optics and Lasers".

Deadline for manuscript submissions: 20 September 2024 | Viewed by 2899

Special Issue Editor

Dr. Amalia Mesaros

E-Mail Website
Guest Editor
Physics and Chemistry Department, Center for Superconductivity, Spintronics and Surface Science, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania
Interests: nanomaterials; luminescence; photocatalysis; thin films; functionalized nanoparticles

Special Issue Information

Dear Colleagues,

Being one of the most powerful features of our life, light brings us health, energy, brightness, and hope. Luminescent materials play a crucial role in the absorption of energy (photo-excitation, thermal-excitation, and electrical-excitation) followed by their conversion into light radiation. Nowadays, inorganic, organic or hybrid luminescent materials are used in almost every aspect of optoelectronics and photonics, such as in lighting, displays, energy conversion, optical information storage, sensing, and biomedicine–bioimaging/therapy.

This Special Issue focuses on recent progress made in the field of luminescent materials in light of their design, elaboration, and characterization. We warmly encourage you to submit your work to this Special Issue, which intends to become a collection of original research manuscripts or systematic reviews covering all aspects related to the design and development of new luminescent systems with high applicative potential.

The topics include but not limited to:

  1. Functional design and applications of new luminescent materials;
  2. Synthesis and characterization of low-dimensional luminescent systems (i.e. 0D, 1D, and 2D);
  3. Inorganic and organic luminescent materials for spectral conversion;
  4. Luminescent materials for biomedical applications;
  5. Luminescent systems for physical and chemical sensing.

Dr. Amalia Mesaros
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. Applied Sciences 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 2400 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.

Published Papers (3 papers)

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Editorial

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3 pages, 172 KiB  
Editorial
Luminescent Materials: Synthesis, Characterization and Application
by Amalia Mesaros
Appl. Sci. 2023, 13(20), 11221; https://doi.org/10.3390/app132011221 - 12 Oct 2023
Viewed by 761
Abstract
Luminescent materials, or phosphors, are organic, inorganic, or hybrid organic/inorganic systems that convert certain types of energy into electromagnetic radiation over thermal radiation [...] Full article
(This article belongs to the Special Issue Luminescent Materials: Synthesis, Characterization and Application)

Research

Jump to: Editorial

15 pages, 3759 KiB  
Article
Enhancing the Photocatalytic Activity and Luminescent Properties of Rare-Earth-Doped CeO2 Nanoparticles
by Dana Toloman, Adriana Popa, Ramona Bianca Sonher, Rares Bortnic, Traian Florin Marinca, Ioana Perhaita, Miuța Filip and Amalia Mesaros
Appl. Sci. 2024, 14(2), 522; https://doi.org/10.3390/app14020522 - 07 Jan 2024
Viewed by 881
Abstract
Our study is focused on the structural and morphological characteristics, optical behaviour and photocatalytic properties of undoped and 5 at% Eu3+-, Gd3+- and Y3+-doped CeO2 nanoparticles prepared by a green hybrid sol-gel combustion method. Several techniques [...] Read more.
Our study is focused on the structural and morphological characteristics, optical behaviour and photocatalytic properties of undoped and 5 at% Eu3+-, Gd3+- and Y3+-doped CeO2 nanoparticles prepared by a green hybrid sol-gel combustion method. Several techniques such as X-ray diffraction powder (XRD), Transmission Electron Microscopy (TEM), UV-Vis spectroscopy, Photoluminescence spectroscopy (PL) and Electron Paramagnetic Resonance (EPR) have been used to investigate the obtained samples. Moreover, the correlation between the characteristics and properties has been studied. The nanoparticles observed by TEM exhibit a pseudo-spherical shape, except for Y3+-doped CeO2, which presents an acicular shape. The average size of undoped and rare-earth-doped CeO2 nanoparticles is below 10 nm, in good agreement with the calculations performed based on XRD analyses. From UV-Vis analyses it has been deduced that with doping the band gap energy decreases, which shows that additional levels are introduced by doping into the CeO2 band gap. The EPR spectra evidence similar behaviour for all doped samples. The photocatalytic activity was evaluated by the degradation of rhodamine B (RhB) under UV light irradiation. The photodegradation mechanism has been studied in depth based on the formation of electron-hole pairs, and to evidence the reactive oxygen species, ESR coupled with spin-trapping experiments was performed. In the case of Y-doped CeO2 nanoparticles, the generation of both •OOH and •O2− radicals involved in RhB photodegradation was highlighted. Full article
(This article belongs to the Special Issue Luminescent Materials: Synthesis, Characterization and Application)
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15 pages, 3916 KiB  
Article
Improving Solar Cell Performance with High-Efficiency Infrared Quantum Cutting in Tb3+−Yb3+ Codoped Silica Hafnia Glass and Glass-Ceramic Thin Films
by Lamyae Oulmaati, Salima El Amrani, Khalid Bouziane, Adel Bouajaj, Mohammed Reda Britel, Francesco Enrichi and Maurizio Ferrari
Appl. Sci. 2023, 13(16), 9390; https://doi.org/10.3390/app13169390 - 18 Aug 2023
Cited by 1 | Viewed by 861
Abstract
An efficient quantum cutting mechanism was observed in a system comprising Tb3+−Yb3+ codoped silica hafnia glass and glass-ceramic. Thin films were deposited on silicon substrates using the dip-coating method and photoluminescence dynamics revealed a quantum [...] Read more.
An efficient quantum cutting mechanism was observed in a system comprising Tb3+−Yb3+ codoped silica hafnia glass and glass-ceramic. Thin films were deposited on silicon substrates using the dip-coating method and photoluminescence dynamics revealed a quantum efficiency of up to 179% at 980 nm. These films can efficiently convert light to lower energy levels and can easily be integrated into silicon-based solar cells, increasing their photoelectric conversion efficiency at a low cost. This was demonstrated through electrical characterization, which revealed a boost in solar cell efficiency when the film was utilized. It was specifically noted that the efficiency of Si solar cells increased by 10.79% and 10.78% when covered with 70SiO2−30HfO2−3Tb3+−12Yb3+ glass and glass ceramic, respectively. Furthermore, an evaluation of the additional external quantum efficiency, derived from this optical system, revealed an improvement ranging from 2.64% to 3.44%. This finding highlights the enhanced light conversion capabilities of the quantum cutting mechanism within the system. Full article
(This article belongs to the Special Issue Luminescent Materials: Synthesis, Characterization and Application)
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