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Controlled Morphology and Its Effects on the Thermoelectric Properties of SnSe2 Thin Films

Muhammad Siyar, Maroosha Farid, Haad Khan, Malik Adeel Umar, Waqas Tanveer, Amna Safdar

Crystals, Volume: 11, Issue: 8, Start page: 942

Swansea University Author: Waqas Tanveer

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DOI (Published version): 10.3390/cryst11080942

Abstract

In the last few years, the thermoelectric properties of tin selenide (SnSe) have been explored in much detail due to its high efficiency and green nature, being free of Te and Pb. In the same chalcogenide family, SnSe2 is also a layered structured material, but its thermoelectric potential has not b...

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Published in: Crystals
ISSN: 2073-4352
Published: MDPI AG 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa57986
first_indexed 2021-09-20T15:38:55Z
last_indexed 2021-10-21T03:26:05Z
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spelling 2021-10-20T16:29:00.4907312 v2 57986 2021-09-20 Controlled Morphology and Its Effects on the Thermoelectric Properties of SnSe2 Thin Films d9b609cbd1c4d407248050203553d7e6 Waqas Tanveer Waqas Tanveer true false 2021-09-20 EAAS In the last few years, the thermoelectric properties of tin selenide (SnSe) have been explored in much detail due to its high efficiency and green nature, being free of Te and Pb. In the same chalcogenide family, SnSe2 is also a layered structured material, but its thermoelectric potential has not been widely explored experimentally. Since SnSe2 has the layered structure, its electrical transport properties may strongly be affected by its microstructure and morphology. Here, we report the effect of reaction time on the structure, phase, and morphology of the SnSe2 during solvothermal synthesis process. We have studied four SnSe2 samples with different reaction times. The sample obtained after 16 h of reaction time was named as M1, for 20 h M2, similarly for 24 h was M3 and for 48 hours’ time, the sample was named as M4. We investigated its thermoelectric properties and found that phase purity and morphology can affect the thermoelectric performance of the synthesized samples. The peak power factor (PF) value along the ab plane was (0.69 μWcm−1K−2) for the M4 sample at 575 K, which was the highest among all the measured samples. The comparatively larger PF value of sample M4 can be related to the increase in its electrical conductivity due to increase in phase purity and band gap reduction. Journal Article Crystals 11 8 942 MDPI AG 2073-4352 thermoelectric; SnSe2; controlled morphology 13 8 2021 2021-08-13 10.3390/cryst11080942 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University 2021-10-20T16:29:00.4907312 2021-09-20T16:37:07.9408793 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Muhammad Siyar 1 Maroosha Farid 2 Haad Khan 3 Malik Adeel Umar 4 Waqas Tanveer 5 Amna Safdar 6 57986__20944__137d43b486194b15898d5df300d175ae.pdf 57986.pdf 2021-09-20T16:38:31.3052057 Output 1961329 application/pdf Version of Record true © 2021 by the authors. This is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license true eng https://creativecommons.org/licenses/by/4.0/
title Controlled Morphology and Its Effects on the Thermoelectric Properties of SnSe2 Thin Films
spellingShingle Controlled Morphology and Its Effects on the Thermoelectric Properties of SnSe2 Thin Films
Waqas Tanveer
title_short Controlled Morphology and Its Effects on the Thermoelectric Properties of SnSe2 Thin Films
title_full Controlled Morphology and Its Effects on the Thermoelectric Properties of SnSe2 Thin Films
title_fullStr Controlled Morphology and Its Effects on the Thermoelectric Properties of SnSe2 Thin Films
title_full_unstemmed Controlled Morphology and Its Effects on the Thermoelectric Properties of SnSe2 Thin Films
title_sort Controlled Morphology and Its Effects on the Thermoelectric Properties of SnSe2 Thin Films
author_id_str_mv d9b609cbd1c4d407248050203553d7e6
author_id_fullname_str_mv d9b609cbd1c4d407248050203553d7e6_***_Waqas Tanveer
author Waqas Tanveer
author2 Muhammad Siyar
Maroosha Farid
Haad Khan
Malik Adeel Umar
Waqas Tanveer
Amna Safdar
format Journal article
container_title Crystals
container_volume 11
container_issue 8
container_start_page 942
publishDate 2021
institution Swansea University
issn 2073-4352
doi_str_mv 10.3390/cryst11080942
publisher MDPI AG
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
document_store_str 1
active_str 0
description In the last few years, the thermoelectric properties of tin selenide (SnSe) have been explored in much detail due to its high efficiency and green nature, being free of Te and Pb. In the same chalcogenide family, SnSe2 is also a layered structured material, but its thermoelectric potential has not been widely explored experimentally. Since SnSe2 has the layered structure, its electrical transport properties may strongly be affected by its microstructure and morphology. Here, we report the effect of reaction time on the structure, phase, and morphology of the SnSe2 during solvothermal synthesis process. We have studied four SnSe2 samples with different reaction times. The sample obtained after 16 h of reaction time was named as M1, for 20 h M2, similarly for 24 h was M3 and for 48 hours’ time, the sample was named as M4. We investigated its thermoelectric properties and found that phase purity and morphology can affect the thermoelectric performance of the synthesized samples. The peak power factor (PF) value along the ab plane was (0.69 μWcm−1K−2) for the M4 sample at 575 K, which was the highest among all the measured samples. The comparatively larger PF value of sample M4 can be related to the increase in its electrical conductivity due to increase in phase purity and band gap reduction.
published_date 2021-08-13T05:16:41Z
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score 11.357488

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