石墨烯
电极
指数函数
GSM演进的增强数据速率
指数衰减
材料科学
石墨烯纳米带
分子
填充系数
分子物理学
化学物理
凝聚态物理
纳米技术
光电子学
化学
物理
量子力学
数学分析
电信
数学
计算机科学
作者
Wence Ding,Liu Guang,Xiaobo Li,Guanghui Zhou
出处
期刊:Chinese Journal of Chemical Physics
[American Institute of Physics]
日期:2023-12-01
卷期号:36 (6): 717-724
标识
DOI:10.1063/1674-0068/cjcp2112285
摘要
We explore the transport properties of oligophenylene molecular junctions, where the center molecule containing 1, 2, or 3 phenyls is sand-wiched between two graphene nanoribbons (GNR) with different edge shapes. According to the obtained results of the first-principles calculations combined with non-equilibrium Green’s function method, we find that the molecular length-dependent resistance of all examined oligophenylene molecular junctions follows well the exponential decay law with different slopes, and the exponential decay factor is sensitive to the edge shape of GNRs and the molecule-electrode connecting configuration. These observations indicate that the current through the oligophenylene molecular junction can be effectively tuned by changing the edge shape of GNRs, the molecular length, and the molecular contacting configuration. These findings provide theoretical insight into the design of molecular devices using GNRs as electrodes.
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