The peculiar transport properties in p-n junctions of doped graphene nanoribbons

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	The peculiar transport properties in p-n junctions of doped graphene nanoribbons
	D. H. Zhang; K. L. Yao; G. Y. Gao
	2011
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	110 期号:1
摘要	Two kinds of junctions based on doped graphene nanoribbons (GNRs) are designed and studied in this article. One is the N-doped armchair GNR (AGNR) joined directly by B-doped AGNRs, and another is similar, but there is an undoped AGNR between them. The transport properties are calculated using the full self-consistent ab initio nonequilibrium Green's function and density-functional theory methods under external bias. We find that the I-V curves for both junctions have a striking nonlinear feature and show large negative differential resistance properties, not only at the positive bias but also at the negative one. The results also indicate that the diode-like properties are kept and the rectification coefficient is very high within a wide bias region. Our calculations reveal that the formation of these peculiar transport behaviors is due to the great changes of the transmission spectra and the projected self-consistent Hamiltonian eigenvalues with the applied bias voltage. These findings suggest that the doped AGNRs may offer unique opportunities for the future development of nanoscale electronics. (C) 2011 American Institute of Physics. [doi:10.1063/1.3605489]
部门归属	[zhang, d. h.; yao, k. l.; gao, g. y.] huazhong univ sci & technol, sch phys, wuhan 430074, peoples r china. [zhang, d. h.; yao, k. l.; gao, g. y.] huazhong univ sci & technol, wuhan pulsed magnet field ctr, wuhan 430074, peoples r china. [yao, k. l.] chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;yao, kl (reprint author), huazhong univ sci & technol, sch phys, wuhan 430074, peoples r china;klyao@mail.hust.edu.cn
关键词	Walled Carbon Nanotubes Electronic-properties Lithium Absorption Edge Ribbons Conductance Defects States
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WOS记录号	WOS:000292776500065
引用统计	被引频次：38[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30870
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. H. Zhang,K. L. Yao,G. Y. Gao. The peculiar transport properties in p-n junctions of doped graphene nanoribbons[J]. Journal of Applied Physics,2011,110(1).
APA	D. H. Zhang,K. L. Yao,&G. Y. Gao.(2011).The peculiar transport properties in p-n junctions of doped graphene nanoribbons.Journal of Applied Physics,110(1).
MLA	D. H. Zhang,et al."The peculiar transport properties in p-n junctions of doped graphene nanoribbons".Journal of Applied Physics 110.1(2011).