Family-Dependent Rectification Characteristics in Ultra-Short Graphene Nanoribbon p–n Junctions
Family-Dependent Rectification Characteristics in Ultra-Short Graphene Nanoribbon p–n Junctions
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DOI：
10.1021/jp200982w
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发表时间：
2011-04
影响因子：
3.7
通讯作者：
Jiaxin Zheng;Xin Yan;Lili Yu;Hong Li;R. Qin;Guangfu Luo;Zhengxiang Gao;D. Yu;Jing Lu
中科院分区：
文献类型：
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作者：
Jiaxin Zheng;Xin Yan;Lili Yu;Hong Li;R. Qin;Guangfu Luo;Zhengxiang Gao;D. Yu;Jing Lu
本文采用第一性原理方法首次研究了几纳米长的扶手椅型石墨烯纳米带（AGNR） p-n结的输运性质。有趣的是，观察到家庭依赖矫正。其中，宽度为3n和3n + 2的AGNR p-n结存在正向传统整流效应，而宽度为3n + 1的AGNR p-n结存在反向整流效应。分析了分子的投影自洽哈密顿特征态的空间分布和状态的投影密度，从而对观测结果有了更深入的了解。
We present the first transport property investigation of a-few-nanometer-long armchair graphene nanoribbon (AGNR) p–n junctions by using first-principles method. Intriguingly, family dependent rectification is observed. To be specific, traditional rectification effect in the forward direction is observed in the AGNR p–n junctions with 3n and 3n + 2 widths, whereas reverse rectification effect is observed in the AGNR p–n junctions with 3n + 1 width. The analysis of the spatial distribution of molecular projected self-consistent Hamiltonian eigenstates and the projected density of states give an insight into the observed results.