The electronic transport properties of zigzag silicene nanoribbon slices with edge hydrogenation and oxidation

Literature Information

Publication Date 2016-03-29
DOI 10.1039/C6CP01159D
Impact Factor 3.676
Authors

Dongqing Zou, Wenkai Zhao, Changfeng Fang, Bin Cui


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Abstract

First principles calculations are performed to study the transport properties of H or H2 edge-hydrogenated zigzag silicene nanoribbon slices with 6 zigzag chains (6ZSiNR) as well as OH or O edge-oxidized 6ZSiNR slices connected with H-terminated 6ZSiNR electrodes. We mainly focus on two configurations: symmetric edge modification and asymmetric edge modification. It is found that these configurations show distinctly different transport behaviours under bias voltages, depending on whether their structures satisfy c2 symmetry operation along the central axis. In addition, the effects of various functional groups on the electronic transport are investigated; comparison of the current magnitudes indicates that the H group has the strongest effect, followed by the OH group, the O group, and the H2 group. This difference is revealed to be related to the coupling interaction between the edge groups of the ZSiNR slices and the H groups of the ZSiNRs electrodes, as well as the transmission channels around the Fermi level.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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