Theoretical Research on Thermoelectric Properties of Graphene Nanorings

被引：0
|
作者：
徐宁 [1 ]
王保林 [1 ]
仇慧 [2 ]
机构：
[1] Department of Physics,Yancheng Institute of Technology
[2] Publishing House ,Nantong University
来源：
JournalofDonghuaUniversity(EnglishEdition) | 2016年 / 33卷 / 03期
关键词：
tight-binding method; thermoelectric properties; graphene nanoribbons(GNRs);
D O I：
10.19884/j.1672-5220.2016.03.014
中图分类号：
TB383.1 [];
学科分类号：
070205 ; 080501 ; 1406 ;
摘要：
Based on the tight-binding approach and the nonequilibrium Green’s function method,the thermoelectric performance of graphene nanoribbons(GNRs) and graphene rings are investigated systematically.Thermoelectric properties show substantial dependence on graphene structure.The maximum value of thermoelectric figure of merit(ZT) in perfect GNRs declines exponentially with the increase of width JV except for metallic armchair GNRs with JV = 3/ + 2(i is an integer).In graphene rings,the ZT value is enhanced dramatically at room temperature,which oscillates with perpendicular magnetic field due to Aharonov-Bohm effect.The significantly enhanced ZT value makes graphene ring a promising candidate for thermoelectric applications.
引用
收藏
页码：421 / 424
页数：4
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