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Synthesis, Characterization, and Applications of Functional Thin Films

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

Deadline for manuscript submissions: 20 August 2025 | Viewed by 710

Special Issue Editor


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Guest Editor
Applied Mathematics, Materials Science and Engineering and Electronic Technology, Universidad Rey Juan Carlos, Madrid, Spain
Interests: thin films

Special Issue Information

Dear Colleagues,

Functional thin films are an exciting and rapidly growing field of research with a wide range of applications. The ability to design and fabricate thin films with specific functions creates new opportunities for technological advances in areas such as electronics, optics, biomaterials, and energy storage. As research in this area continues to progress, it is expected that there will be even more innovative and practical applications for functional thin films.

This Special Issue focuses on the synthesis, characterization, and application of functional thin films.

Topics covered include but are not limited to:

  • Functional thin films and nanostructures;
  • Functional and conductive polymer thin films;
  • Anti-reflective coatings;
  • Functional films for gas-sensing applications;
  • Functional piezoelectric materials and applications;
  • Optoelectronic functional thin films;
  • Functional thin films for solar cells;
  • Thin films in the biomedical industry;
  • Electronics industry;
  • Biosensors.

Dr. Hicham Bakkali
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.

Keywords

  • thin films
  • coatings
  • materials science
  • nanotechnology
  • optoelectronics
  • solar cells
  • sensors and biosensors
  • piezoelectricity

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Published Papers (1 paper)

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Research

10 pages, 6353 KiB  
Article
Electronic Structures of Molecular Beam Epitaxially Grown SnSe2 Thin Films on 3×3-Sn Reconstructed Si(111) Surface
by Zhujuan Li, Qichao Tian, Kaili Wang, Yuyang Mu, Zhenjie Fan, Xiaodong Qiu, Qinghao Meng, Can Wang and Yi Zhang
Appl. Sci. 2025, 15(11), 6150; https://doi.org/10.3390/app15116150 - 29 May 2025
Viewed by 346
Abstract
SnSe2, as a prominent member of the post-transition metal dichalcogenides, exhibits many intriguing physical phenomena and excellent thermoelectric properties, calling for both fundamental study and potential application in two-dimensional (2D) devices. In this article, we realized the molecular beam epitaxial growth [...] Read more.
SnSe2, as a prominent member of the post-transition metal dichalcogenides, exhibits many intriguing physical phenomena and excellent thermoelectric properties, calling for both fundamental study and potential application in two-dimensional (2D) devices. In this article, we realized the molecular beam epitaxial growth of SnSe2 films on a 3×3-Sn reconstructed Si(111) surface. The analysis of reflection high-energy electron diffraction reveals the in-plane lattice orientation as SnSe2[110]//3-Sn [112]//Si [110]. In addition, the flat morphology of SnSe2 film was identified by scanning tunneling microscopy (STM), implying the relatively strong adsorption effect of 3-Sn/Si(111) substrate to the SnSe2 adsorbates. Subsequently, the interfacial charge transfer was observed by X-ray photoemission spectroscopy. Afterwards, the direct characterization of electronic structures was obtained via angle-resolved photoemission spectroscopy. In addition to proving the presence of interfacial charge transfer again, a new relatively flat in-gap band was found in monolayer and few-layer SnSe2, which disappeared in multi-layer SnSe2. The interface strain-induced partial structural phase transition of thin SnSe2 films is presumed to be the reason. Our results provide important information on the characterization and effective modulation of electronic structures of SnSe2 grown on 3-Sn/Si(111), paving the way for the further study and application of SnSe2 in 2D electronic devices. Full article
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