Family-Dependent Rectification Characteristics in Ultra-Short Graphene Nanoribbon p鈥?i>n Junctions

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• 作者：Jiaxin Zheng ; Xin Yan ; Lili Yu ; Hong Li ; Rui Qin ; Guangfu Luo ; Zhengxiang Gao ; Dapeng Yu ; Jing Lu
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：May 5, 2011
• 年：2011
• 卷：115
• 期：17
• 页码：8547-8554
• 全文大小：1283K
• 年卷期：v.115,no.17(May 5, 2011)
• ISSN：1932-7455

文摘

We present the first transport property investigation of a-few-nanometer-long armchair graphene nanoribbon (AGNR) p鈥?i>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鈥?i>n junctions with 3n and 3n + 2 widths, whereas reverse rectification effect is observed in the AGNR p鈥?i>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.