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Enhanced thermoelectricity in Bi-sprayed bismuth sulphide particles

Rafiq Mulla, Sajad Kiani, Alvin Orbaek White Orcid Logo, Charlie Dunnill Orcid Logo, Andrew Barron Orcid Logo

Materials Science in Semiconductor Processing, Volume: 162, Start page: 107528

Swansea University Authors: Rafiq Mulla, Sajad Kiani, Alvin Orbaek White Orcid Logo, Charlie Dunnill Orcid Logo, Andrew Barron Orcid Logo

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DOI (Published version): 10.1016/j.mssp.2023.107528

Abstract

Bismuth sulphide (Bi2S3), an n-type semiconductor that critically demonstrates the Seebeck effect with Seebeck coefficients of about 300 μVK−1. However, its poor electrical conductivity makes it unsuitable for thermoelectric applications. In this study, we present a facile preparation method for fab...

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Published in: Materials Science in Semiconductor Processing
ISSN: 1369-8001 1873-4081
Published: Elsevier BV 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa63215
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However, its poor electrical conductivity makes it unsuitable for thermoelectric applications. In this study, we present a facile preparation method for fabricating Bi-sprayed Bi2S3 particles that alters their thermoelectric properties. Samples were created with differing Bi concentrations into the Bi2S3 compound to test for enhanced thermoelectric properties of the resulting Bi/Bi2S3 composites. The incorporation of excess Bi into Bi2S3 significantly improves the compound's electrical conductivity and optimises overall thermoelectric performance. The electrical conductivity of the Bi/Bi2S3 composites improved from 6.5 Scm−1 (for pristine Bi2S3) to 154 Scm−1 (for highest Bi added Bi2S3). Although the Seebeck coefficient of samples decreased with Bi incorporation, a high power factor (∼390 μWm−1K−2) has been achieved for an optimised composition of the composite. Incorporation of metallic Bi has led to an increase in the thermal conductivity of the samples, but the increase is not significant for the optimised composition of the composites where a high thermoelectric performance has been observed. Therefore, enhanced power factor and moderate thermal conductivity have resulted in a peak ZT value of 0.11 at room temperature. 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spelling v2 63215 2023-04-20 Enhanced thermoelectricity in Bi-sprayed bismuth sulphide particles 1a1c32917f31df48a473a4f846068035 Rafiq Mulla Rafiq Mulla true false fe9ec46699e095368faf2a0465b598c5 Sajad Kiani Sajad Kiani true false 8414a23650d4403fdfe1a735dbd2e24e 0000-0001-6338-5970 Alvin Orbaek White Alvin Orbaek White true false 0c4af8958eda0d2e914a5edc3210cd9e 0000-0003-4052-6931 Charlie Dunnill Charlie Dunnill true false 92e452f20936d688d36f91c78574241d 0000-0002-2018-8288 Andrew Barron Andrew Barron true false 2023-04-20 CHEG Bismuth sulphide (Bi2S3), an n-type semiconductor that critically demonstrates the Seebeck effect with Seebeck coefficients of about 300 μVK−1. However, its poor electrical conductivity makes it unsuitable for thermoelectric applications. In this study, we present a facile preparation method for fabricating Bi-sprayed Bi2S3 particles that alters their thermoelectric properties. Samples were created with differing Bi concentrations into the Bi2S3 compound to test for enhanced thermoelectric properties of the resulting Bi/Bi2S3 composites. The incorporation of excess Bi into Bi2S3 significantly improves the compound's electrical conductivity and optimises overall thermoelectric performance. The electrical conductivity of the Bi/Bi2S3 composites improved from 6.5 Scm−1 (for pristine Bi2S3) to 154 Scm−1 (for highest Bi added Bi2S3). Although the Seebeck coefficient of samples decreased with Bi incorporation, a high power factor (∼390 μWm−1K−2) has been achieved for an optimised composition of the composite. Incorporation of metallic Bi has led to an increase in the thermal conductivity of the samples, but the increase is not significant for the optimised composition of the composites where a high thermoelectric performance has been observed. Therefore, enhanced power factor and moderate thermal conductivity have resulted in a peak ZT value of 0.11 at room temperature. The strategy proposed here improves the thermoelectricity in Bi2S3 and shows excellent potential for developing better-performing thermoelectric compounds with excess elemental contents. Journal Article Materials Science in Semiconductor Processing 162 107528 Elsevier BV 1369-8001 1873-4081 1 8 2023 2023-08-01 10.1016/j.mssp.2023.107528 http://dx.doi.org/10.1016/j.mssp.2023.107528 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University SU Library paid the OA fee (TA Institutional Deal) Authors are thankful to the Welsh Government (EU European Regional Development Fund) for funding the RICE (Reducing Industrial Carbon Emission) project (Grant Number: 81435), and for funding AOW as Sêr Cymru II Fellow and Welsh Government Capital Fund (Grant number: 290). 2023-06-12T14:30:21.8185534 2023-04-20T08:21:53.9773304 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Rafiq Mulla 1 Sajad Kiani 2 Alvin Orbaek White 0000-0001-6338-5970 3 Charlie Dunnill 0000-0003-4052-6931 4 Andrew Barron 0000-0002-2018-8288 5 63215__27137__79392154883d4287908a7c077e41fba5.pdf 63215.pdf 2023-04-20T08:24:34.7756601 Output 6143410 application/pdf Version of Record true This is an open access article under the CC BY license false eng http://creativecommons.org/licenses/by/4.0/
title Enhanced thermoelectricity in Bi-sprayed bismuth sulphide particles
spellingShingle Enhanced thermoelectricity in Bi-sprayed bismuth sulphide particles
Rafiq Mulla
Sajad Kiani
Alvin Orbaek White
Charlie Dunnill
Andrew Barron
title_short Enhanced thermoelectricity in Bi-sprayed bismuth sulphide particles
title_full Enhanced thermoelectricity in Bi-sprayed bismuth sulphide particles
title_fullStr Enhanced thermoelectricity in Bi-sprayed bismuth sulphide particles
title_full_unstemmed Enhanced thermoelectricity in Bi-sprayed bismuth sulphide particles
title_sort Enhanced thermoelectricity in Bi-sprayed bismuth sulphide particles
author_id_str_mv 1a1c32917f31df48a473a4f846068035
fe9ec46699e095368faf2a0465b598c5
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92e452f20936d688d36f91c78574241d
author_id_fullname_str_mv 1a1c32917f31df48a473a4f846068035_***_Rafiq Mulla
fe9ec46699e095368faf2a0465b598c5_***_Sajad Kiani
8414a23650d4403fdfe1a735dbd2e24e_***_Alvin Orbaek White
0c4af8958eda0d2e914a5edc3210cd9e_***_Charlie Dunnill
92e452f20936d688d36f91c78574241d_***_Andrew Barron
author Rafiq Mulla
Sajad Kiani
Alvin Orbaek White
Charlie Dunnill
Andrew Barron
author2 Rafiq Mulla
Sajad Kiani
Alvin Orbaek White
Charlie Dunnill
Andrew Barron
format Journal article
container_title Materials Science in Semiconductor Processing
container_volume 162
container_start_page 107528
publishDate 2023
institution Swansea University
issn 1369-8001
1873-4081
doi_str_mv 10.1016/j.mssp.2023.107528
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
url http://dx.doi.org/10.1016/j.mssp.2023.107528
document_store_str 1
active_str 0
description Bismuth sulphide (Bi2S3), an n-type semiconductor that critically demonstrates the Seebeck effect with Seebeck coefficients of about 300 μVK−1. However, its poor electrical conductivity makes it unsuitable for thermoelectric applications. In this study, we present a facile preparation method for fabricating Bi-sprayed Bi2S3 particles that alters their thermoelectric properties. Samples were created with differing Bi concentrations into the Bi2S3 compound to test for enhanced thermoelectric properties of the resulting Bi/Bi2S3 composites. The incorporation of excess Bi into Bi2S3 significantly improves the compound's electrical conductivity and optimises overall thermoelectric performance. The electrical conductivity of the Bi/Bi2S3 composites improved from 6.5 Scm−1 (for pristine Bi2S3) to 154 Scm−1 (for highest Bi added Bi2S3). Although the Seebeck coefficient of samples decreased with Bi incorporation, a high power factor (∼390 μWm−1K−2) has been achieved for an optimised composition of the composite. Incorporation of metallic Bi has led to an increase in the thermal conductivity of the samples, but the increase is not significant for the optimised composition of the composites where a high thermoelectric performance has been observed. Therefore, enhanced power factor and moderate thermal conductivity have resulted in a peak ZT value of 0.11 at room temperature. The strategy proposed here improves the thermoelectricity in Bi2S3 and shows excellent potential for developing better-performing thermoelectric compounds with excess elemental contents.
published_date 2023-08-01T14:30:20Z
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