Special Issue "Properties and Applications of Complex Chalcogenides"

A special issue of Crystals (ISSN 2073-4352).

Deadline for manuscript submissions: closed (15 September 2018)

Special Issue Editor

Guest Editor
Prof. Dr. Amitava Choudhury

Missouri University of Science and Technology, Department of Chemistry, Rolla, United States
Website | E-Mail
Interests: Li-/Na-ion batteries; complex chalcogenides; porous materials; catalysis; optical properties, magnetic properties; thermoelectrics; developing new synthesis strategies; single-crystal and powder X-ray diffraction

Special Issue Information

Dear Colleagues,

The area of complex chalcogenides has grown manifold in the last two decades because of the development of polychalcogenide-based flux for the synthesis of new and complex structures. Unlike oxides, chalcogenides can form a variety of complex structures due to its ability to form large number of building units, chalcogen-chalcogen bonds, and new structures through phase homologies. On the other hand chalcogenides have the propensity to form semiconducting structures with tunable band gap due to the presence of higher degree of covalency. Softer chalcogen also facilitates movement of hard alkali ions through the pores and channels of the structure. The combination of complex structures, semiconducting properties and softer ligands enable them to be used in a variety of applications ranging from non-linear optics, photo-voltaics, thermoelectics, solid-ion conductor and ion-exchanger.

In this Special Issue, we invite colleagues working in this area to submit manuscripts that reflect the development and current status of the area of complex chalcogenides with respect to synthetic strategies, structure determination, crystal growth along with theier applications in various fields.

Prof. Dr. Amitava Choudhury
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 papers will be 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. Crystals 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 1200 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

  • New Synthesis techniques
  • Crystal Structure of new complex chalcogenides
  • Crystal growth
  • Optical properties
  • Photovoltaics
  • Non-Linear Optical properties
  • Thermoelectrics
  • Magnetic properties
  • Solid ion conductors
  • Ion-exchanger
  • Electrode materials

Published Papers (1 paper)

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Research

Open AccessArticle Synthesis, Crystal Structures, Optical Properties and Theoretical Calculations of Two Metal Chalcogenides Ba2AlSbS5 and Ba2GaBiSe5
Crystals 2018, 8(4), 165; https://doi.org/10.3390/cryst8040165
Received: 19 March 2018 / Revised: 8 April 2018 / Accepted: 9 April 2018 / Published: 13 April 2018
Cited by 3 | PDF Full-text (39818 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Two quaternary metal chalcogenides, Ba2AlSbS5 and Ba2GaBiSe5, were successfully synthesized by solid-state reaction in sealed silica tubes. Both of them crystallize in the same orthorhombic space group Pnma, but they appear with obviously different construction
[...] Read more.
Two quaternary metal chalcogenides, Ba2AlSbS5 and Ba2GaBiSe5, were successfully synthesized by solid-state reaction in sealed silica tubes. Both of them crystallize in the same orthorhombic space group Pnma, but they appear with obviously different construction features. For example, Ba2AlSbS5 exhibits [SbS3]3− units and zero-dimensional (0D) [AlSbS5]4− clusters, which is different from those ([BiSe6]3− units and 1D [GaBiSe5]4− chains) of Ba2GaBiSe5. We also systematically investigated the entire series of Ba2MIIIMIII’Q5 (MIII = Al, Ga, In; MIII’ = As, Sb, Bi; Q = S, Se, Te) compounds, and the results showed that the interconnection of MIIIQ4 and MIII’Qn (n = 3, 5, 6) units can form three different structural types, including 0D [MIIIMIII’Q5] clusters, single [MIII’Q3] chains and isolated [MIIIQ4] units, or [MIIIQ3]n and [MIII’Q3]n double chains, which may be induced by the flexible coordination and on-link modes of MIII’ atoms. Spectral investigation shows that their bandgaps are about 2.57 eV for Ba2AlSbS5 and 2.14 eV for Ba2GaBiSe5. Theoretical calculation was also used to analyze their structure-property relationships, and the results indicate that the title compounds exhibit larger birefringences (Δn > 0.10), thus having potential as the IR birefringent materials. Full article
(This article belongs to the Special Issue Properties and Applications of Complex Chalcogenides)
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