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Materials
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Growth and Applications of Oxide Thin Films and Heterostructures
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Growth and Applications of Oxide Thin Films and Heterostructures

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

Deadline for manuscript submissions: closed (10 January 2024) | Viewed by 4186

Special Issue Editors

Dr. Petronela Garoi

E-Mail Website
Guest Editor
Laser Department, National Institute of Laser, Plasma and Radiation Physics, 077125 Magurele, Romania
Interests: thin films; oxide materials; magnetron sputtering deposition; heterostructures; solar cells; metamaterials
Dr. Ionel Stavarache

E-Mail Website
Guest Editor
National Institute of Materials Physics (NIMP), Atomistilor 405A, 077125 Magurele, Romania
Interests: SiGeSn-based nanomaterials; nanocrystals embedded into dielectrics; high-k gate oxides; magnetron sputtering; thermal evaporation assisted by e-beam, charge storage and opto-electric properties; VIS-SWIR bandgap of group IV alloys; sensors; photodetectors; nonvolatile memories

Special Issue Information

Dear Colleagues,

In the past several decades, films and structures based on thin oxides have been the focus of many research groups due to their improved structural, optical and electrical properties, appropriate for various practical applications. The high purity, good control of properties and wide application range of oxide materials are just a few arguments for the technology’s development related to opto-electrical heterostructures.

The aim of this Special Issue is to focus on novel advances, original and innovative studies in various research fields, having in common the possibility of increasing the functionality of devices based on thin ox-ide layers and/or heterostructures obtained through efficient deposition techniques. Thus, it will bring together new trends in the deposition of thin oxide films by magnetron sputtering, thermal evaporation, and laser, among others, but also new technological paths for obtaining improved heterostructures, focusing on their application side. We welcome papers describing opto-electrical applications based on oxide layers with desired properties from the initial bulk material, as well as combinations of different oxides in controlled heterostructures with macro-engineered properties. Studies can cover different topics, ranging from the relationship between different preparation approaches to the correlation of results obtained from the structural and opto-electrical characterization of films and the functionalization of the target device (e.g., metamaterials-based device photodetectors, memory devices, solar cells, biomaterials, sensors) produced by high-performance deposition.

With the continuous progress of deposition technologies, more and more applications are being developed based on processes at the plasma–matter or laser–matter interface. The development of thin oxide functional layers with a wide range of applications is just one of them.

Dr. Petronela Garoi
Dr. Ionel Stavarache
Guest Editors

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. 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

  • thin films
  • oxide materials
  • magnetron sputtering deposition
  • heterostructures
  • solar cells
  • met-amaterials
  • sensors
  • charge storage devices
  • battery

Published Papers (3 papers)

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Research

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21 pages, 5983 KiB  
Article
Luminescence Properties of Epitaxial Cu2O Thin Films Electrodeposited on Metallic Substrates and Cu2O Single Crystals
by Laima Trinkler, Dajin Dai, Liuwen Chang, Mitch Ming-Chi Chou, Tzu-Ying Wu, Jevgenijs Gabrusenoks, Dace Nilova, Rihards Ruska, Baiba Berzina and Ramunas Nedzinskas
Materials 2023, 16(12), 4349; https://doi.org/10.3390/ma16124349 - 13 Jun 2023
Cited by 2 | Viewed by 1203
Abstract
The luminescent properties of epitaxial Cu2O thin films were studied in 10–300 K temperature range and compared with the luminescent properties of Cu2O single crystals. Cu2O thin films were deposited epitaxially via the electrodeposition method on either [...] Read more.
The luminescent properties of epitaxial Cu2O thin films were studied in 10–300 K temperature range and compared with the luminescent properties of Cu2O single crystals. Cu2O thin films were deposited epitaxially via the electrodeposition method on either Cu or Ag substrates at different processing parameters, which determined the epitaxial orientation relationships. Cu2O (100) and (111) single crystal samples were cut from a crystal rod grown using the floating zone method. Luminescence spectra of thin films contain the same emission bands as single crystals around 720, 810 and 910 nm, characterizing VO2+, VO+ and VCu defects, correspondingly. Additional emission bands, whose origin is under discussion, are observed around 650–680 nm, while the exciton features are negligibly small. The relative mutual contribution of the emission bands varies depending on the thin film sample. The existence of the domains of crystallites with different orientations determines the polarization of luminescence. The PL of both Cu2O thin films and single crystals is characterized by negative thermal quenching in the low-temperature region; the reason of this phenomenon is discussed. Full article
(This article belongs to the Special Issue Growth and Applications of Oxide Thin Films and Heterostructures)
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Review

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39 pages, 8010 KiB  
Review
Advances in Structural and Morphological Characterization of Thin Magnetic Films: A Review
by Payel Aich, Carlo Meneghini and Luca Tortora
Materials 2023, 16(23), 7331; https://doi.org/10.3390/ma16237331 - 24 Nov 2023
Viewed by 1230
Abstract
The present review places emphasis on a comprehensive survey of experimental techniques to probe the structural and morphological features at the nanoscale range in thin magnetic films, incorporating those available at in-house laboratories as well as those at state-of-the-art synchrotron radiation facilities. This [...] Read more.
The present review places emphasis on a comprehensive survey of experimental techniques to probe the structural and morphological features at the nanoscale range in thin magnetic films, incorporating those available at in-house laboratories as well as those at state-of-the-art synchrotron radiation facilities. This elucidating the range of available techniques, and the information they can yield represents a step for advancing the understanding of and for unlocking new possibilities in the design and optimization of thin magnetic films across a wide range of applications. Full article
(This article belongs to the Special Issue Growth and Applications of Oxide Thin Films and Heterostructures)
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18 pages, 4899 KiB  
Review
Wearable Temperature Sensors Based on Reduced Graphene Oxide Films
by Xinyue Li, Tianrui Cui, Xin Li, Houfang Liu, Ding Li, Jinming Jian, Zhen Li, Yi Yang and Tianling Ren
Materials 2023, 16(17), 5952; https://doi.org/10.3390/ma16175952 - 30 Aug 2023
Viewed by 1052
Abstract
With the development of medical technology and increasing demands of healthcare monitoring, wearable temperature sensors have gained widespread attention because of their portability, flexibility, and capability of conducting real-time and continuous signal detection. To achieve excellent thermal sensitivity, high linearity, and a fast [...] Read more.
With the development of medical technology and increasing demands of healthcare monitoring, wearable temperature sensors have gained widespread attention because of their portability, flexibility, and capability of conducting real-time and continuous signal detection. To achieve excellent thermal sensitivity, high linearity, and a fast response time, the materials of sensors should be chosen carefully. Thus, reduced graphene oxide (rGO) has become one of the most popular materials for temperature sensors due to its exceptional thermal conductivity and sensitive resistance changes in response to different temperatures. Moreover, by using the corresponding preparation methods, rGO can be easily combined with various substrates, which has led to it being extensively applied in the wearable field. This paper reviews the state-of-the-art advances in wearable temperature sensors based on rGO films and summarizes their sensing mechanisms, structure designs, functional material additions, manufacturing processes, and performances. Finally, the possible challenges and prospects of rGO-based wearable temperature sensors are briefly discussed. Full article
(This article belongs to the Special Issue Growth and Applications of Oxide Thin Films and Heterostructures)
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