| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Electronic Transport Properties of an Anthraquinone-Based Molecular Switch with Carbon Nanotube Electrodes |
| ZHAO Peng1**,LIU De-Sheng2,3 |
1School of Physics and Technology, University of Jinan, Jinan 250022
2School of Physics, Shandong University, Jinan 250100
3Department of Physics, Jining University, Qufu 273155 |
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| Cite this article: |
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ZHAO Peng, LIU De-Sheng 2012 Chin. Phys. Lett. 29 047302 |
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Abstract Based on the nonequilibrium Green's function method and density functional theory calculations, we theoretically investigate the electronic transport properties of an anthraquinone-based molecular switch with carbon nanotube electrodes. The molecules that comprise the switch can convert between reduced hydroquinone (HQ) and oxidized anthraquinne (AQ) states via redox reactions. Our results show that the on-off ratio is increased one order of magnitude when compared to the case of gold electrodes. Moreover, an obvious negative differential resistance behavior at much low bias (0.07 V) is observed in the HQ form.
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Received: 21 November 2011
Published: 04 April 2012
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| PACS: |
73.23.-b
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(Electronic transport in mesoscopic systems)
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85.65.+h
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(Molecular electronic devices)
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