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Crystals
Special Issues
Thermoelectrics: from Materials to Devices
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Thermoelectrics: from Materials to Devices

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Inorganic Crystalline Materials".

Deadline for manuscript submissions: closed (30 June 2022) | Viewed by 5749

Special Issue Editors

Dr. Ady Suwardi

E-Mail Website
Guest Editor
A-Star, Institute of Materials Research and Engineering, Singapore City 138634, Singapore
Interests: thermoelectrics; electronic and thermal transport; semiconductors; oxide thin films; ferroelectrics
Dr. Yun Zheng

E-Mail Website
Guest Editor
Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan 430056, China
Interests: electrocatalysis; batteries; thermoelectric; surface science
Special Issues, Collections and Topics in MDPI journals
Dr. Bhuvanesh Srinivasan

E-Mail Website
Guest Editor
National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
Interests: chalcogenides; materials/ceramic processing; thermoelectrics; DFT

Special Issue Information

Dear Colleagues,

Over the past decade, thermoelectrics has progressed in leaps and bounds thanks to the breakthroughs in understanding electronic transport properties through band-engineering, and thermal transport properties through multi-length scale phonon scattering engineering. These advances have led to renewed interest in both inorganic and organic and hybrid thermoelectric materials. A decade has passed since the aforementioned breakthroughs, and reliable zT approaching 3 have been reported in several literatures. At the moment, we are primed for another big-step forward, owing to advancements in materials processing, characterization, and a deepeer understanding of other relevant and emerging areas such as topological materials, high entropy alloys, and the advent of machine learning in materials science.

Keeping this in mind, this Special Issue aims to provide a platform for researchers working in thermoelectrics to exchange ideas and report their latest endeavors in advancing this exciting field. We invite researchers to contribute research articles, review papers, and communications related to all aspects of thermoelectrics, including, but is not restricted to, the following:

  • Latest development of thermoelectric materials and devices;
  • Theoretical understanding/prediction on promising thermoelectrics;
  • State-of-the-art characterization and home-built tools for studying/understanding thermoelectric properties;
  • Chemical/physical insights into engineering high-performance thermoelectrics;
  • Data-driven and machine learning efforts on the discovery of new thermoelectric materials.

Dr. Ady Suwardi
Dr. Yun Zheng
Dr. Bhuvanesh Srinivasan
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. 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 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

  • Thermoelectrics
  • Electronic transport
  • Thermal transport
  • Alloy
  • Energy harvesting
  • Semiconductor-based cooling
  • Data-driven materials discovery

Published Papers (2 papers)

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Research

12 pages, 1866 KiB  
Article
Fabrication and Evaluation of Low-Cost CrSi2 Thermoelectric Legs
by Sylvain Le Tonquesse, Yoshitaka Matsushita, Priyanka Jood, Michihiro Ohta, Takao Mori and David Berthebaud
Crystals 2021, 11(9), 1140; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11091140 - 18 Sep 2021
Cited by 5 | Viewed by 2202
Abstract
CrSi2 is a promising thermoelectric material constituted of non-toxic and earth abundant elements that offer good perspectives for the mass production of inexpensive and reliable thermoelectric modules for waste heat recovery. Realization of robust metallic contacts with low electrical and thermal resistances [...] Read more.
CrSi2 is a promising thermoelectric material constituted of non-toxic and earth abundant elements that offer good perspectives for the mass production of inexpensive and reliable thermoelectric modules for waste heat recovery. Realization of robust metallic contacts with low electrical and thermal resistances on thermoelectric materials is crucial to maximize the conversion efficiency of such a device. In this article, the metallization of an undoped CrSi2 with Ti and Nb using a conventional Spark Plasma Sintering process is explored and discussed. These contact metals were selected because they have compatible thermal expansion coefficients with those of CrSi2, which were determined in this study by X-ray Diffraction in the temperature range 299–899 K. Ti was found to be a promising contact metal offering both strong adhesion on CrSi2 and negligible electrical contact resistance (<1 μΩ cm2). However, metallization with Nb resulted in the formation of cracks caused by large internal stress inside the sample during the fabrication process and the diffusion of Si in the metallic layer. A maximum conversion efficiency of 0.3% was measured for a sandwiched Ti/CrSi2/Ti thermoelectric leg placed inside a thermal gradient of 427 K. The preliminary results obtained and discussed in this article on a relatively simple case study aim to initiate the development of more reliable and efficient CrSi2 thermoelectric legs with an optimized design. Full article
(This article belongs to the Special Issue Thermoelectrics: from Materials to Devices)
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10 pages, 2626 KiB  
Article
Structural Phase Transition and Related Thermoelectric Properties in Sn Doped AgBiSe2
by Xiao-Cun Liu and Ming-Yan Pan
Crystals 2021, 11(9), 1016; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11091016 - 25 Aug 2021
Cited by 6 | Viewed by 2447
Abstract
AgBiSe2, which exhibits complex structural phase transition behavior, has recently been considered as a potential thermoelectric material due to its intrinsically low thermal conductivity. In this work, we investigate the crystal structure of Sn-doped AgBiSe2 through powder X-ray diffraction and [...] Read more.
AgBiSe2, which exhibits complex structural phase transition behavior, has recently been considered as a potential thermoelectric material due to its intrinsically low thermal conductivity. In this work, we investigate the crystal structure of Sn-doped AgBiSe2 through powder X-ray diffraction and differential scanning calorimetry measurements. A stable cubic Ag1−x/2Bi1−x/2SnxSe2 phase can be obtained at room temperature when the value of x is larger than 0.2. In addition, the thermoelectric properties of Ag1−x/2Bi1−x/2SnxSe2 (x = 0.2, 0.25, 0.3, 0.35) are investigated, revealing that Ag1−x/2Bi1−x/2SnxSe2 compounds are intrinsic semiconductors with a low lattice thermal conductivity. This work provides new insights into the crystal structure adjustment of AgBiSe2 and shows that Ag1−x/2Bi1−x/2SnxSe2 is a potentially lead-free thermoelectric material candidate. Full article
(This article belongs to the Special Issue Thermoelectrics: from Materials to Devices)
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