Enhancement of thermoelectric performance in graphenylene nanoribbons by suppressing phonon thermal conductance: the role of phonon local resonance

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成果类型：

期刊论文

作者：

Wu, Cheng-Wei;Zhou, Wu-Xing;Xie, Guofeng;Chen, Xue-Kun;Wu, Dan;...

通讯作者：

Zhou, WX;Chen, XK

作者机构：

[Wu, Cheng-Wei; Zhou, Wu-Xing; Zhou, WX; Xie, Guofeng] Hunan Univ Sci & Technol, Sch Mat Sci & Engn, Xiangtan 411201, Peoples R China.

[Wu, Cheng-Wei; Zhou, Wu-Xing; Zhou, WX; Xie, Guofeng] Hunan Univ Sci & Technol, Hunan Prov Key Lab Adv Mat New Energy Storage & C, Xiangtan 411201, Peoples R China.

[Chen, Xue-Kun] Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.

[Fan, Zhi-Qiang; Wu, Dan] Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Hunan Prov Key Lab Flexible Elect Mat Genome Engn, Changsha 410114, Peoples R China.

通讯机构：

[Chen, XK ] U

[Zhou, WX ] H

Hunan Univ Sci & Technol, Sch Mat Sci & Engn, Xiangtan 411201, Peoples R China.

Hunan Univ Sci & Technol, Hunan Prov Key Lab Adv Mat New Energy Storage & C, Xiangtan 411201, Peoples R China.

Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.

语种：

英文

关键词：

NEGF;graphenylene nanoribbons;stub structure;thermoelectric

期刊：

Nanotechnology

ISSN：

0957-4484

年：

2022

卷：

期：

DOI：

10.1088/1361-6528/ac5288

基金类别：

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [12074115, 11874145, 11904161, 12074046]

机构署名：

本校为通讯机构

院系归属：

数理学院

摘要：

Based on the method of non-equilibrium Green's function, we investigate the thermal transport and thermoelectric properties of graphenylene nanoribbons (GRNRs) with different width and chirality. The results show that the thermoelectric (TE) performance of GRNRs significantly increases with decreasing ribbon width, which stems from the reduction of thermal conductance. In addition, by changing the ribbon width and chirality, the figure of merit ( ZT ) can be controllably manipulated and maximized up to 0.45 at room temperature. Moreover, it is ...

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Enhancement of thermoelectric performance in graphenylene nanoribbons by suppressing phonon thermal conductance: the role of phonon local resonance

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