Effects of different tailoring graphene electrodes on the rectification and negative differential resistance of molecular devices

被引：0
|
作者：
Zhang, Ting Ting [1 ]
Xia, Cai Juan [1 ]
Zhang, Bo Qun [1 ]
Lu, Xiao Feng [2 ]
Liu, Yang [1 ]
Cui, Yan [1 ]
Tang, Xiao Jie [1 ]
机构：
[1] Xian Polytech Univ, Sch Sci, Xian 710048, Shaanxi, Peoples R China
[2] Natl Inst Metrol, Beijing 102200, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2018年 / 32卷 / 29期
基金：
国家重点研发计划;
关键词：
Graphene nanoribbons electrodes; negative differential resistance; rectifying behavior and nonequilibrium Green's function method; SPIN-DEPENDENT TRANSPORT; CONDUCTANCE; NANORIBBONS; JUNCTIONS;
D O I：
10.1142/S021797921850323X
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The electronic transport properties of oligo p-phenylenevinylene (OPV) molecule sandwiched with symmetrical or asymmetric tailoring graphene nanoribbons (GNRs) electrodes are investigated by nonequilibrium Green's function in combination with density functional theory. The results show that different tailored GNRs electrodes can modulate the current-voltage characteristic of molecular devices. The rectifying behavior can be observed with respect to electrodes, and the maximum rectification ratio can reach to 14.2 in the asymmetric AC-ZZ GNRs and ZZ-AC-ZZ GNRs electrodes system. In addition, the obvious negative differential resistance can be observed in the symmetrical AC-ZZ GNRs system.
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页数：13
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