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Enhanced thermoelectric performance of twisted bilayer graphene nanoribbons junction

Shuo Deng, Xiang Cai, Yan Zhang, Lijie Li Orcid Logo

Carbon, Volume: 145, Pages: 622 - 628

Swansea University Author: Lijie Li Orcid Logo

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DOI (Published version): 10.1016/j.carbon.2019.01.089

Abstract

We investigate the electron transport and thermoelectric property of twisted bilayer graphene nanoribbon junction (TBGNRJ) in 0°, 21.8°, 38.2° and 60° rotation angles by first principles calculation with Landauer-Buttiker and Boltzmann theories. It is found that TBGNRJs exhibit a strong reduction of...

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Published in: Carbon
ISSN: 0008-6223
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa48574
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first_indexed 2019-01-27T05:01:46Z
last_indexed 2020-06-30T19:01:04Z
id cronfa48574
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spelling 2020-06-30T17:01:32.8752536 v2 48574 2019-01-26 Enhanced thermoelectric performance of twisted bilayer graphene nanoribbons junction ed2c658b77679a28e4c1dcf95af06bd6 0000-0003-4630-7692 Lijie Li Lijie Li true false 2019-01-26 EEEG We investigate the electron transport and thermoelectric property of twisted bilayer graphene nanoribbon junction (TBGNRJ) in 0°, 21.8°, 38.2° and 60° rotation angles by first principles calculation with Landauer-Buttiker and Boltzmann theories. It is found that TBGNRJs exhibit a strong reduction of thermal conductance compared with the single graphene nanoribbon (GNR) and negative differential resistance (NDR) in 21.8° and 38.2° rotation angles under 0.2 V bias voltage. More importantly, three peak ZT values of 2.0, 2.7 and 6.1 can be achieved in the 21.8° rotation angle at 300 K. The outstanding ZT values of TBGNRJs are interpreted as the combination of the reduced thermal conductivity and enhanced electrical conductivity at optimized angles. Journal Article Carbon 145 622 628 0008-6223 30 4 2019 2019-04-30 10.1016/j.carbon.2019.01.089 COLLEGE NANME Electronic and Electrical Engineering COLLEGE CODE EEEG Swansea University 2020-06-30T17:01:32.8752536 2019-01-26T20:43:45.6214576 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering Shuo Deng 1 Xiang Cai 2 Yan Zhang 3 Lijie Li 0000-0003-4630-7692 4 0048574-26012019204511.pdf Carbon_accepted.pdf 2019-01-26T20:45:11.2600000 Output 3671369 application/pdf Accepted Manuscript true 2020-01-25T00:00:00.0000000 true eng
title Enhanced thermoelectric performance of twisted bilayer graphene nanoribbons junction
spellingShingle Enhanced thermoelectric performance of twisted bilayer graphene nanoribbons junction
Lijie Li
title_short Enhanced thermoelectric performance of twisted bilayer graphene nanoribbons junction
title_full Enhanced thermoelectric performance of twisted bilayer graphene nanoribbons junction
title_fullStr Enhanced thermoelectric performance of twisted bilayer graphene nanoribbons junction
title_full_unstemmed Enhanced thermoelectric performance of twisted bilayer graphene nanoribbons junction
title_sort Enhanced thermoelectric performance of twisted bilayer graphene nanoribbons junction
author_id_str_mv ed2c658b77679a28e4c1dcf95af06bd6
author_id_fullname_str_mv ed2c658b77679a28e4c1dcf95af06bd6_***_Lijie Li
author Lijie Li
author2 Shuo Deng
Xiang Cai
Yan Zhang
Lijie Li
format Journal article
container_title Carbon
container_volume 145
container_start_page 622
publishDate 2019
institution Swansea University
issn 0008-6223
doi_str_mv 10.1016/j.carbon.2019.01.089
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 Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering
document_store_str 1
active_str 0
description We investigate the electron transport and thermoelectric property of twisted bilayer graphene nanoribbon junction (TBGNRJ) in 0°, 21.8°, 38.2° and 60° rotation angles by first principles calculation with Landauer-Buttiker and Boltzmann theories. It is found that TBGNRJs exhibit a strong reduction of thermal conductance compared with the single graphene nanoribbon (GNR) and negative differential resistance (NDR) in 21.8° and 38.2° rotation angles under 0.2 V bias voltage. More importantly, three peak ZT values of 2.0, 2.7 and 6.1 can be achieved in the 21.8° rotation angle at 300 K. The outstanding ZT values of TBGNRJs are interpreted as the combination of the reduced thermal conductivity and enhanced electrical conductivity at optimized angles.
published_date 2019-04-30T03:59:06Z
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score 11.016258

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