Recent Advances in Functional Metal Oxide Thin Films

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Thin Films".

Deadline for manuscript submissions: 10 August 2025 | Viewed by 2517

Special Issue Editors


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Guest Editor
Department of Physics, Kaunas University of Technology, Studentų 50, LT-51368 Kaunas, Lithuania
Interests: physical vapor deposition; reactive magnetron sputtering deposition; ferroelectrics; multiferroics; X-ray spectroscopy; crystallography; plasma-assisted deposition; dielectric properties of materials; optic properties; conductive optical transparent materials; magnetic materials for spintronics

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Guest Editor
Department of Physics, Kaunas University of Technology, Studentų 50, LT-51368 Kaunas, Lithuania
Interests: physical vapor deposition; reactive magnetron sputtering deposition; ferroelectrics; multiferroics; electro-optic thin films; crystallography; Raman scattering spectroscopy; graphene; boron nitride films; dielectric properties of materials; optic properties

Special Issue Information

Dear Colleagues,

Oxide thin films have applications in a variety of energy and information technologies, including photovoltaics, thermoelectrics, piezoelectrics, magnetoelectrics, dielectrics, electron and ion conductors, and resistive switching. Single thin films or more complex multilayer systems are used; each of these technologies requires detailed knowledge of the properties of the oxides. Functional oxides are the most attractive materials with varying degrees of structural complexity, which continue to stimulate many research projects in the fields of physics and materials science. Oxide heterostructures and thin films have been studied and used for many years. These oxides include many different structures, such as perovskite, wurtzite, zirconium, corundum, fluorite, spinel, etc. In this group of materials, thin oxide film materials exhibit a variety of remarkable properties, such as high-temperature superconductivity, large magnetoresistance, ionic conductivity, thermoelectricity, ferromagnetism, ferroelectricity, and multiferroicity. Therefore, we believe that the exchange of information between different and even complementary research communities can be very useful to better understand the essential aspects that need to be addressed to improve the functional properties of oxide materials. The overall goal of this collection of papers is to stimulate a broad discussion of advances in thin film materials physics and chemistry.

This Special Issue will serve as a forum for papers on the following concepts:

  • Theoretical research and knowledge of the growing mechanisms of oxide thin films.
  • Experimental investigation research and new ideas in deposition technics of oxide thin films.
  • Investigation of thin films’ functional properties’ dependence on synthesis parameters.
  • Methods of improvement of the functional properties of thin film oxide materials.
  • Novel investigation technics of oxide thin films’ functional properties.

Dr. Aleksandras Iljinas
Dr. Vytautas Stankus
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. Coatings 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

  • functional oxide thin films
  • oxide heterostructures
  • nanostructures
  • deposition technics of oxide thin films
  • multiferroics
  • growth
  • characterization

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Published Papers (2 papers)

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Research

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12 pages, 2316 KiB  
Article
Cu2O Homojunction Solar Cells: Efficiency Enhancement with a High Short Circuit Current
by S. A. A. B. Thejasiri, K. M. D. C. Jayathilaka, F. S. B. Kafi, L. S. R. Kumara, O. Seo, S. Yasuno, O. Sakata, W. Siripala and R. P. Wijesundera
Coatings 2024, 14(8), 932; https://doi.org/10.3390/coatings14080932 - 25 Jul 2024
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Abstract
Cu2O homojunction solar cells were fabricated using potentiostatic electrodeposition technique. n-Cu2O thin films were grown in an acetate bath while p-Cu2O thin films were grown in a lactate bath. In the growth of n-Cu2O films, [...] Read more.
Cu2O homojunction solar cells were fabricated using potentiostatic electrodeposition technique. n-Cu2O thin films were grown in an acetate bath while p-Cu2O thin films were grown in a lactate bath. In the growth of n-Cu2O films, cupric acetate concentration, pH and temperature of the bath, deposition potential and duration (film thickness) and annealing temperature were investigated. In the growth of p-Cu2O on n-Cu2O, concentration of copper sulphate and lactic acid solutions, pH and temperature of the bath, deposition potential and duration were investigated. In addition, the procedure of sulfidation of p-Cu2O film surface using (NH4)2S vapor, before depositing Au front contact, was also optimized to enhance the photoactive performance. The structural, morphological and optoelectronic properties of the Cu2O films were investigated using scanning electron microscopy (SEMs), high energy X-ray diffraction (HEXRD), hard X-ray photoelectron spectroscopy (HAXPES), spectral response and current–voltage (J-V) measurements. The best Cu2O homojunction solar cell exhibited Voc = 460 mV, Jsc = 12.99 mA·cm−2, FF = 42% and η = 2.51%, under AM 1.5 illumination. Efficiency enhancement with the record high Jsc value for the Cu2O homojunction solar cell has mainly been due to the optimization of pH of the n-Cu2O deposition bath and lactic acid concentration of the p-Cu2O deposition bath. Full article
(This article belongs to the Special Issue Recent Advances in Functional Metal Oxide Thin Films)
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Review

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23 pages, 8006 KiB  
Review
Research Progress on the Application of One-Step Fabrication Techniques for Iridium-Based Thin Films in the Oxygen Evolution Reaction
by Wenting Li, Junyu Zhu, Hongzhong Cai, Zhongqiu Tong, Xian Wang, Yan Wei, Xingqiang Wang, Changyi Hu, Xingdong Zhao and Xuxiang Zhang
Coatings 2024, 14(9), 1147; https://doi.org/10.3390/coatings14091147 - 6 Sep 2024
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Abstract
Electrochemical water splitting, a sustainable method for hydrogen production, faces the challenge of slow oxygen evolution reaction (OER) kinetics. Iridium oxide (IrO2) is widely regarded as the most effective catalyst for OER due to its excellent properties. Compared to nanoparticles, IrO [...] Read more.
Electrochemical water splitting, a sustainable method for hydrogen production, faces the challenge of slow oxygen evolution reaction (OER) kinetics. Iridium oxide (IrO2) is widely regarded as the most effective catalyst for OER due to its excellent properties. Compared to nanoparticles, IrO2 thin films exhibit significant advantages in OER, including a uniform and stable catalytic interface and excellent mechanical strength. This paper reviews recent advancements in one-step deposition techniques for the preparation of IrO2 thin films and their application in OER. Additionally, it analyzes the advantages and disadvantages of various methods and the latest research achievements, and briefly outlines the future trends and applications. Full article
(This article belongs to the Special Issue Recent Advances in Functional Metal Oxide Thin Films)
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