Electronic Transport of a Molecular Photoswitch with Graphene Nanoribbon Electrodes
WU Qiu-Hua1 , ZHAO Peng1** , LIU De-Sheng2,3
1 School of Physics and Technology, University of Jinan, Jinan 2500222 School of Physics, Shandong University, Jinan 2501003 Department of Physics, Jining University, Qufu 273155
Abstract ：Based on non-equilibrium Green's function formalism and density functional theory calculations, we investigate the electronic transport properties of 15,16-dinitrile dihydropyrene/cyclophanediene bridged between two zigzag graphene nanoribbon electrodes. Our results demonstrate that the system can exhibit good switching behavior with the maximum on-off ratio high up to 146 which is improved dramatically compared with the case of gold electrodes. Moreover, an obvious negative differential resistance behavior occurs at 0.3 V, making the system have more potential in near future molecular circuits.
出版日期: 2014-04-24
:
73.23.-b
(Electronic transport in mesoscopic systems)
85.65.+h
(Molecular electronic devices)
71.15.Mb
(Density functional theory, local density approximation, gradient and other corrections)
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2014, Vol. 31 
