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Nanomaterials
Special Issues
Multinary Metal Chalcogenides for Thermoelectric Applications
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Multinary Metal Chalcogenides for Thermoelectric Applications

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Inorganic Materials and Metal-Organic Frameworks".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 5396

Special Issue Editor

Prof. Dr. Paolo Scardi

E-Mail Website
Guest Editor
Department of Civil, Environmental & Mechanical Engineering, University of Trento, Via Mesiano 77, 38123 Trento, Italy
Interests: nanostructured materials; nanocrystalline chalcogenides; multinary systems; disordered systems; metal sulfides; selenides; tellurides; thermoelectric materials; thin-film thermoelectric materials; thermoelectric generators
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Metal chalcogenides form a large class of semiconducting materials actively studied and used in thermoelectricity. While binary compounds such as Bi2Te3 are the most common options in commercial devices available to date, current research focuses on increasingly more complex systems, with the dual goal of improving performance and seeking more environmentally friendly and lower-cost alternatives.
Multinary chalcogenides exhibit flexible properties due to their greater and inherent chemical and structural freedom, which allows for cross substitutions of cations and different doping possibilities with magnetic and non-magnetic elements. These complex systems lend themselves particularly well to nanostructuring and "engineering" of structural and microstructural disorder, both considered promising avenues for the development of thermoelectric materials for applications in bulk devices and thin-film generators.
This Special Issue is mainly addressed to researchers active in the thermoelectric sector. However, the invitation to contribute extends to all those studying chalcogenides for different applications, and who might find it interesting to explore the possibilities of using this vast class of materials in the thermoelectric field.

Prof. Dr. Paolo Scardi
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. Nanomaterials 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 2900 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

  • Metal chalcogenides
  • Multinary systems
  • Disordered systems
  • Nanostructured materials
  • Thermoelectric materials
  • Thin-film thermoelectric materials
  • Thermoelectric generators
  • Thermoelectric properties
  • Characterization techniques
  • Nanoscale

Published Papers (2 papers)

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Research

12 pages, 5205 KiB  
Article
Topological Anderson Insulator in Cation-Disordered Cu2ZnSnS4
by Binayak Mukherjee, Eleonora Isotta, Carlo Fanciulli, Narges Ataollahi and Paolo Scardi
Nanomaterials 2021, 11(10), 2595; https://0-doi-org.brum.beds.ac.uk/10.3390/nano11102595 - 01 Oct 2021
Cited by 8 | Viewed by 2036
Abstract
We present the first candidate for the realization of a disorder-induced Topological Anderson Insulator in a real material system. High-energy reactive mechanical alloying produces a polymorph of Cu2ZnSnS4 with high cation disorder. Density functional theory calculations show an inverted ordering [...] Read more.
We present the first candidate for the realization of a disorder-induced Topological Anderson Insulator in a real material system. High-energy reactive mechanical alloying produces a polymorph of Cu2ZnSnS4 with high cation disorder. Density functional theory calculations show an inverted ordering of bands at the Brillouin zone center for this polymorph, which is in contrast to its ordered phase. Adiabatic continuity arguments establish that this disordered Cu2ZnSnS4 can be connected to the closely related Cu2ZnSnSe4, which was previously predicted to be a 3D topological insulator, while band structure calculations with a slab geometry reveal the presence of robust surface states. This evidence makes a strong case in favor of a novel topological phase. As such, the study opens up a window to understanding and potentially exploiting topological behavior in a rich class of easily-synthesized multinary, disordered compounds. Full article
(This article belongs to the Special Issue Multinary Metal Chalcogenides for Thermoelectric Applications)
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13 pages, 3632 KiB  
Article
Bismuth Doping in Nanostructured Tetrahedrite: Scalable Synthesis and Thermoelectric Performance
by Peter Baláž, Emmanuel Guilmeau, Marcela Achimovičová, Matej Baláž, Nina Daneu, Oleksandr Dobrozhan and Mária Kaňuchová
Nanomaterials 2021, 11(6), 1386; https://0-doi-org.brum.beds.ac.uk/10.3390/nano11061386 - 25 May 2021
Cited by 5 | Viewed by 2311
Abstract
In this study, we demonstrate the feasibility of Bi-doped tetrahedrite Cu12Sb4−xBixS13 (x = 0.02–0.20) synthesis in an industrial eccentric vibratory mill using Cu, Sb, Bi and S elemental precursors. High-energy milling was followed by spark plasma [...] Read more.
In this study, we demonstrate the feasibility of Bi-doped tetrahedrite Cu12Sb4−xBixS13 (x = 0.02–0.20) synthesis in an industrial eccentric vibratory mill using Cu, Sb, Bi and S elemental precursors. High-energy milling was followed by spark plasma sintering. In all the samples, the prevailing content of tetrahedrite Cu12Sb4S13 (71–87%) and famatinite Cu3SbS4 (13–21%), together with small amounts of skinnerite Cu3SbS3, have been detected. The occurrence of the individual Cu-Sb-S phases and oxidation states of bismuth identified as Bi0 and Bi3+ are correlated. The most prominent effect of the simultaneous milling and doping on the thermoelectric properties is a decrease in the total thermal conductivity (κ) with increasing Bi content, in relation with the increasing amount of famatinite and skinnerite contents. The lowest value of κ was achieved for x = 0.2 (1.1 W m−1 K−1 at 675 K). However, this sample also manifests the lowest electrical conductivity σ, combined with relatively unchanged values for the Seebeck coefficient (S) compared with the un-doped sample. Overall, the lowered electrical performances outweigh the benefits from the decrease in thermal conductivity and the resulting figure-of-merit values illustrate a degradation effect of Bi doping on the thermoelectric properties of tetrahedrite in these synthesis conditions. Full article
(This article belongs to the Special Issue Multinary Metal Chalcogenides for Thermoelectric Applications)
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