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Ceramics
Special Issues
Thermoelectric Properties of Ceramic-Based Materials
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Thermoelectric Properties of Ceramic-Based Materials

A special issue of Ceramics (ISSN 2571-6131).

Deadline for manuscript submissions: closed (15 May 2023) | Viewed by 3758

Special Issue Editor

Dr. Sang-Il Kim

E-Mail Website
Guest Editor
Department of Materials Science and Engineering, University of Seoul, Seoul 02504, Republic of Korea
Interests: thermoelectric; 2D materials; chalcogenides
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Thermoelectric materials can generate electrical energy from temperature gradients, or temperature gradients from electrical energy. In recent years, the thermoelectric performance of materials, which is evaluated with the dimensionless figure of merit (zT), has been improved. This Special Issue is dedicated to recent advances in the characterization of the thermoelectric properties of ceramic-based materials regarding both electronic and thermal transport properties. The development of the microstructure, composition, and synthesis of ceramic-based thermoelectrics, as well as the investigation of the composition–property relationship, open new opportunities to search for new ceramic-based thermoelectric materials. This Special Issue will present the most recent developments in the field of ceramic-based thermoelectric materials. Studies on thermoelectric-related properties, including the electronic and thermal transport properties of ceramic-based materials, are welcome, including original articles, communications, and reviews.

Dr. Sang-il Kim
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. Ceramics is an international peer-reviewed open access quarterly 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 1600 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

  • thermoelectric materials
  • electronic transport properties
  • thermal transport properties
  • oxides
  • chalcogenides

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Published Papers (2 papers)

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Research

10 pages, 1634 KiB  
Article
Characterization of Bipolar Transport in Hf(Te1−xSex)2 Thermoelectric Alloys
by Seong-Mee Hwang, Sang-il Kim, Jeong-Yeon Kim, Minsu Heo and Hyun-Sik Kim
Ceramics 2023, 6(1), 538-547; https://doi.org/10.3390/ceramics6010032 - 17 Feb 2023
Viewed by 1747
Abstract
Control of bipolar conduction is essential to improve the high-temperature thermoelectric performance of materials for power generation applications. Recently, Hf(Te1−xSex)2 alloys have gained much attention due to their potential use in thermoelectric power generation. Increasing the Se [...] Read more.
Control of bipolar conduction is essential to improve the high-temperature thermoelectric performance of materials for power generation applications. Recently, Hf(Te1−xSex)2 alloys have gained much attention due to their potential use in thermoelectric power generation. Increasing the Se alloying content significantly increases the band gap while decreasing its carrier concentration. These two factors affect bipolar conduction substantially. In addition, the weighted mobility ratio is estimated from the experimental electronic transport properties of Hf(Te1−xSex)2 alloys (x = 0.0, 0.025, 0.25, 0.5, 1.0) by using the Two-Band model. From the bipolar thermal conductivity also calculated using the Two-Band model, we find that it peaks near x = 0.5. The initial bipolar conductivity increase of x < 0.5 is mostly due to the decrease in the weighted mobility ratio and carrier concentration with increasing x. For x > 0.5, the drop in the bipolar conductivity can be understood with significant band gap enlargement. Full article
(This article belongs to the Special Issue Thermoelectric Properties of Ceramic-Based Materials)
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10 pages, 1899 KiB  
Article
Estimation of Temperature-Dependent Band Parameters for Bi-Doped SnSe with High Thermoelectric Performance
by Hyunjin Park, Sang-il Kim, Jeong-Yeon Kim, Seong-Mee Hwang and Hyun-Sik Kim
Ceramics 2023, 6(1), 504-513; https://doi.org/10.3390/ceramics6010029 - 13 Feb 2023
Cited by 9 | Viewed by 1606
Abstract
Recent studies have revealed the outstanding thermoelectric performance of Bi-doped n-type SnSe. In this regard, we analyzed the band parameters for Sn1−xBixSe (x = 0.00, 0.02, 0.04, and 0.06) using simple equations and the Single Parabolic Band [...] Read more.
Recent studies have revealed the outstanding thermoelectric performance of Bi-doped n-type SnSe. In this regard, we analyzed the band parameters for Sn1−xBixSe (x = 0.00, 0.02, 0.04, and 0.06) using simple equations and the Single Parabolic Band model. Bi doping suppresses the carrier-phonon coupling while increasing the density-of-states effective mass. The n-type SnSe is known to have two conduction bands converge near 600 K. Bi doping changes the temperature at which the band convergence occurs. When x = 0.04, its weighted mobility maximized near 500 K, which indicated the possible band convergence. The highest zT of the x = 0.04 sample at mid-temperatures (473–573 K) can be attributed to the engineered band convergence via Bi doping. Full article
(This article belongs to the Special Issue Thermoelectric Properties of Ceramic-Based Materials)
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