Challenges and opportunities in low-dimensional thermoelectric nanomaterials

Thermoelectric materials can convert heat into electrical energy, which can potentially be used to improve the fuel efficiency of conventional heat engines. In recent decades, significant progress has been made in the thermoelectric field, where nanotechnology has played an important role. The quant...

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Main Authors: Dong, Jinfeng, Suwardi, Ady, Tan, Xian Yi, Jia, Ning, Saglik, Kivanc, Ji, Rong, Wang, Xizu, Zhu, Qiang, Xu, Jianwei, Yan, Qingyu
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/170288
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1702882023-09-06T01:56:18Z Challenges and opportunities in low-dimensional thermoelectric nanomaterials Dong, Jinfeng Suwardi, Ady Tan, Xian Yi Jia, Ning Saglik, Kivanc Ji, Rong Wang, Xizu Zhu, Qiang Xu, Jianwei Yan, Qingyu School of Materials Science and Engineering Institute of Materials Research and Engineering, A*STAR Engineering::Materials Nanocrystals Nanowire Thermoelectric materials can convert heat into electrical energy, which can potentially be used to improve the fuel efficiency of conventional heat engines. In recent decades, significant progress has been made in the thermoelectric field, where nanotechnology has played an important role. The quantum confinement effect has been shown to increase the Seebeck coefficient, while the nanostructures can effectively scatter phonons. In this review, the latest advances in thermoelectric nanomaterials were summarized and the challenges they face in thermoelectric-device fabrication were discussed. Firstly, the major problems hindering the development of nanowire-, thin-film-, and nanocrystal-based thermoelectric devices were discussed, followed by possible solutions in the subsequent sections. The unique carrier transport properties of one-dimensional nanowires that result from their distinct band structures were then examined. The distinct diffusive thermal transport, caused by boundary scattering of phonons, was also discussed. Next, the unique thermoelectric transport properties of superlattice thin films and two-dimensional electron gas were focused on. In addition, the different types of flexible thin films and strategies to improve their thermoelectric performance were described. Subsequently, the electrical transport properties of thermoelectric bulk samples consolidated from solution-processed nanocrystals, including the synthesis principles and modulation doping were discussed. Furthermore, the rational design of distinct microstructures which can selectively scatter phonons was elaborated on. Finally, we prospect for future developments in thermoelectric nanomaterials. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) The authors are grateful for the financial support from MOE ACRF Tier 1 RG128/21, RT6/22, and Singapore A*STAR project A19D9a0096. A. Suwardi acknowledges funding from A*STAR Career Development Fund (CDF) no. C210112022. 2023-09-06T01:56:17Z 2023-09-06T01:56:17Z 2023 Journal Article Dong, J., Suwardi, A., Tan, X. Y., Jia, N., Saglik, K., Ji, R., Wang, X., Zhu, Q., Xu, J. & Yan, Q. (2023). Challenges and opportunities in low-dimensional thermoelectric nanomaterials. Materials Today, 66, 137-157. https://dx.doi.org/10.1016/j.mattod.2023.04.021 1369-7021 https://hdl.handle.net/10356/170288 10.1016/j.mattod.2023.04.021 2-s2.0-85160348506 66 137 157 en RG128/21 RT6/22 A19D9a0096 C210112022 Materials Today © 2023 Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
Nanocrystals
Nanowire
spellingShingle Engineering::Materials
Nanocrystals
Nanowire
Dong, Jinfeng
Suwardi, Ady
Tan, Xian Yi
Jia, Ning
Saglik, Kivanc
Ji, Rong
Wang, Xizu
Zhu, Qiang
Xu, Jianwei
Yan, Qingyu
Challenges and opportunities in low-dimensional thermoelectric nanomaterials
description Thermoelectric materials can convert heat into electrical energy, which can potentially be used to improve the fuel efficiency of conventional heat engines. In recent decades, significant progress has been made in the thermoelectric field, where nanotechnology has played an important role. The quantum confinement effect has been shown to increase the Seebeck coefficient, while the nanostructures can effectively scatter phonons. In this review, the latest advances in thermoelectric nanomaterials were summarized and the challenges they face in thermoelectric-device fabrication were discussed. Firstly, the major problems hindering the development of nanowire-, thin-film-, and nanocrystal-based thermoelectric devices were discussed, followed by possible solutions in the subsequent sections. The unique carrier transport properties of one-dimensional nanowires that result from their distinct band structures were then examined. The distinct diffusive thermal transport, caused by boundary scattering of phonons, was also discussed. Next, the unique thermoelectric transport properties of superlattice thin films and two-dimensional electron gas were focused on. In addition, the different types of flexible thin films and strategies to improve their thermoelectric performance were described. Subsequently, the electrical transport properties of thermoelectric bulk samples consolidated from solution-processed nanocrystals, including the synthesis principles and modulation doping were discussed. Furthermore, the rational design of distinct microstructures which can selectively scatter phonons was elaborated on. Finally, we prospect for future developments in thermoelectric nanomaterials.
author2 School of Materials Science and Engineering
author_facet School of Materials Science and Engineering
Dong, Jinfeng
Suwardi, Ady
Tan, Xian Yi
Jia, Ning
Saglik, Kivanc
Ji, Rong
Wang, Xizu
Zhu, Qiang
Xu, Jianwei
Yan, Qingyu
format Article
author Dong, Jinfeng
Suwardi, Ady
Tan, Xian Yi
Jia, Ning
Saglik, Kivanc
Ji, Rong
Wang, Xizu
Zhu, Qiang
Xu, Jianwei
Yan, Qingyu
author_sort Dong, Jinfeng
title Challenges and opportunities in low-dimensional thermoelectric nanomaterials
title_short Challenges and opportunities in low-dimensional thermoelectric nanomaterials
title_full Challenges and opportunities in low-dimensional thermoelectric nanomaterials
title_fullStr Challenges and opportunities in low-dimensional thermoelectric nanomaterials
title_full_unstemmed Challenges and opportunities in low-dimensional thermoelectric nanomaterials
title_sort challenges and opportunities in low-dimensional thermoelectric nanomaterials
publishDate 2023
url https://hdl.handle.net/10356/170288
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