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Facile production of thermoelectric bismuth telluride thick films in the presence of polyvinyl alcohol

C. Lei, M. R. Burton, I. S. Nandhakumar, Matthew Burton Orcid Logo

Physical Chemistry Chemical Physics, Volume: 18, Issue: 21, Pages: 14164 - 14167

Swansea University Author: Matthew Burton Orcid Logo

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DOI (Published version): 10.1039/c6cp02360f

Abstract

Bismuth telluride is currently the best performing thermoelectric material for room temperature operations in commercial thermoelectric devices. We report the reproducible and facile production of 600 micron thick bismuth telluride (Bi2Te3) layers by low cost and room temperature pulsed and potentio...

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Published in: Physical Chemistry Chemical Physics
ISSN: 1463-9076 1463-9084
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa50244
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last_indexed 2019-06-05T11:06:51Z
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spelling 2019-06-05T09:44:53.4689650 v2 50244 2019-05-07 Facile production of thermoelectric bismuth telluride thick films in the presence of polyvinyl alcohol 2deade2806e39b1f749e9cf67ac640b2 0000-0002-0376-6322 Matthew Burton Matthew Burton true false 2019-05-07 MTLS Bismuth telluride is currently the best performing thermoelectric material for room temperature operations in commercial thermoelectric devices. We report the reproducible and facile production of 600 micron thick bismuth telluride (Bi2Te3) layers by low cost and room temperature pulsed and potentiostatic electrodeposition from a solution containing bismuth and tellurium dioxide in 2 M nitric acid onto nickel in the presence of polyvinyl alcohol (PVA). This was added to the electrolyte to promote thick layer formation and its effect on the structure, morphology and composition of the electrodeposits was investigated by SEM and EDX. Well adherent, uniform, compact and stoichiometric n-type Bi2Te3 films with a high Seebeck coefficient of up to −200 μV K−1 and a high electrical conductivity of up to 400 S cm−1 resulting in a power factor of 1.6 × 10−3 W m−1 K−2 at film growth rates of 100 μm h−1 for potentiostatic electrodeposition were obtained. The films also exhibited a well defined hexagonal structure as determined by XRD. Journal Article Physical Chemistry Chemical Physics 18 21 14164 14167 1463-9076 1463-9084 31 12 2016 2016-12-31 10.1039/c6cp02360f https://eprints.soton.ac.uk/394559/ COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2019-06-05T09:44:53.4689650 2019-05-07T09:57:12.9284864 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering C. Lei 1 M. R. Burton 2 I. S. Nandhakumar 3 Matthew Burton 0000-0002-0376-6322 4 0050244-05062019094440.docx BiTe_PCCP_rev.docx 2019-06-05T09:44:40.7930000 Output 3120078 application/vnd.openxmlformats-officedocument.wordprocessingml.document Accepted Manuscript true 2019-06-05T00:00:00.0000000 false eng
title Facile production of thermoelectric bismuth telluride thick films in the presence of polyvinyl alcohol
spellingShingle Facile production of thermoelectric bismuth telluride thick films in the presence of polyvinyl alcohol
Matthew Burton
title_short Facile production of thermoelectric bismuth telluride thick films in the presence of polyvinyl alcohol
title_full Facile production of thermoelectric bismuth telluride thick films in the presence of polyvinyl alcohol
title_fullStr Facile production of thermoelectric bismuth telluride thick films in the presence of polyvinyl alcohol
title_full_unstemmed Facile production of thermoelectric bismuth telluride thick films in the presence of polyvinyl alcohol
title_sort Facile production of thermoelectric bismuth telluride thick films in the presence of polyvinyl alcohol
author_id_str_mv 2deade2806e39b1f749e9cf67ac640b2
author_id_fullname_str_mv 2deade2806e39b1f749e9cf67ac640b2_***_Matthew Burton
author Matthew Burton
author2 C. Lei
M. R. Burton
I. S. Nandhakumar
Matthew Burton
format Journal article
container_title Physical Chemistry Chemical Physics
container_volume 18
container_issue 21
container_start_page 14164
publishDate 2016
institution Swansea University
issn 1463-9076
1463-9084
doi_str_mv 10.1039/c6cp02360f
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 - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
url https://eprints.soton.ac.uk/394559/
document_store_str 1
active_str 0
description Bismuth telluride is currently the best performing thermoelectric material for room temperature operations in commercial thermoelectric devices. We report the reproducible and facile production of 600 micron thick bismuth telluride (Bi2Te3) layers by low cost and room temperature pulsed and potentiostatic electrodeposition from a solution containing bismuth and tellurium dioxide in 2 M nitric acid onto nickel in the presence of polyvinyl alcohol (PVA). This was added to the electrolyte to promote thick layer formation and its effect on the structure, morphology and composition of the electrodeposits was investigated by SEM and EDX. Well adherent, uniform, compact and stoichiometric n-type Bi2Te3 films with a high Seebeck coefficient of up to −200 μV K−1 and a high electrical conductivity of up to 400 S cm−1 resulting in a power factor of 1.6 × 10−3 W m−1 K−2 at film growth rates of 100 μm h−1 for potentiostatic electrodeposition were obtained. The films also exhibited a well defined hexagonal structure as determined by XRD.
published_date 2016-12-31T04:01:37Z
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score 11.036531

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