Study on molecular devices with negative differential resistance

2013 ◽  
Vol 103 (3) ◽  
pp. 033506 ◽  
Author(s):  
Ahmed Mahmoud ◽  
Paolo Lugli
Keyword(s):  
Negative Differential Resistance ◽  
Differential Resistance ◽  
Molecular Devices

Effects of different tailoring graphene electrodes on the rectification and negative differential resistance of molecular devices

2018 ◽  
Vol 32 (29) ◽  
pp. 1850323
Author(s):  
Ting Ting Zhang ◽  
Cai Juan Xia ◽  
Bo Qun Zhang ◽  
Xiao Feng Lu ◽  
Yang Liu ◽  
...  
Keyword(s):  
Electronic Transport ◽  
Negative Differential Resistance ◽  
Density Functional ◽  
Graphene Nanoribbons ◽  
Differential Resistance ◽  
Voltage Characteristic ◽  
Molecular Devices ◽  
Current Voltage Characteristic ◽  
Functional Theory ◽  
Current Voltage

The electronic transport properties of oligo p-phenylenevinylene (OPV) molecule sandwiched with symmetrical or asymmetric tailoring graphene nanoribbons (GNRs) electrodes are investigated by nonequilibrium Green’s function in combination with density functional theory. The results show that different tailored GNRs electrodes can modulate the current–voltage characteristic of molecular devices. The rectifying behavior can be observed with respect to electrodes, and the maximum rectification ratio can reach to 14.2 in the asymmetric AC–ZZ GNRs and ZZ–AC–ZZ GNRs electrodes system. In addition, the obvious negative differential resistance can be observed in the symmetrical AC-ZZ GNRs system.

scholarly journals Multipeak negative differential resistance from interplay between nonlinear stark effect and double-branch current flow

RSC Advances ◽  
2014 ◽  
Vol 4 (95) ◽  
pp. 52933-52939 ◽  
Author(s):  
Mikołaj Sadek ◽  
Małgorzata Wierzbowska ◽  
Michał F. Rode ◽  
Andrzej L. Sobolewski
Keyword(s):  
First Principles ◽  
Negative Differential Resistance ◽  
Stark Effect ◽  
Current Flow ◽  
Differential Resistance ◽  
Molecular Devices

Multipeak negative differential resistance (NDR) molecular devices are designed from first principles.

Negative differential resistance in molecular devices: the role of molecule-electrode coupling

2011 ◽  
Vol 54 (8) ◽  
pp. 1455-1460 ◽  
Author(s):  
YaXin Zhai ◽  
GuoMin Ji ◽  
ChangFeng Fang ◽  
Bin Cui ◽  
Peng Zhao ◽  
...  
Keyword(s):  
Negative Differential Resistance ◽  
Differential Resistance ◽  
Molecular Devices

Negative differential resistance in polymer molecular devices modulated with molecular length

2010 ◽  
Vol 374 (37) ◽  
pp. 3857-3862 ◽  
Author(s):  
Yun Ren ◽  
Ke-Qiu Chen ◽  
Qing Wan ◽  
Anlian Pan ◽  
W.P. Hu
Keyword(s):  
Negative Differential Resistance ◽  
Differential Resistance ◽  
Molecular Devices ◽  
Molecular Length

Room Temperature Negative Differential Resistance in Nanoscale Molecular

1999 ◽  
Vol 582 ◽  
Author(s):  
J. Chen ◽  
W. Wang ◽  
M. A. Reed ◽  
A. M. Rawlett ◽  
D. W. Price ◽  
...  
Keyword(s):  
Low Temperature ◽  
Negative Differential Resistance ◽  
Room Temperature ◽  
Active Component ◽  
Differential Resistance ◽  
Molecular Devices ◽  
Self Assembled Monolayer ◽  
Redox Center ◽  
Current Voltage ◽  
Peak To Valley Ratio

ABSTRACTMolecular devices utilizing active self-assembled monolayer (SAM) (containing nitroamine (2′-amino-4-ethynylphenyl-4′-ethynylphenyl-5′-nitro-1-benzenethiolate) and nitro (4-ethynylphenyl-4′-ethynylphenyl-2′-nitro-1-benzenethiolate) redox center) as the active component are reported. Current-voltage measurements of the devices exhibited negative differential resistance at room temperature and an on-off peak-to-valley ratio in excess of 1000:1 at low temperature.

Rectification and negative differential effects of Si2C2 clusters: An ab initio study

2019 ◽  
Vol 33 (19) ◽  
pp. 1950205
Author(s):  
Qinghua Zhou ◽  
Ziqing Wei ◽  
Wei Hu ◽  
Yan Liang ◽  
Wenhua Liu ◽  
...  
Keyword(s):  
Linear Form ◽  
Negative Differential Resistance ◽  
Density Functional ◽  
Differential Resistance ◽  
Molecular Devices ◽  
Ab Initio Study ◽  
Transmission Characteristics ◽  
Functional Theory ◽  
Transmission Properties ◽  
The Density Functional Theory

By combining the density functional theory (DFT) with the nonequilibrium Green’s function, we studied the transmission properties of Si2C2 clusters (the linear form M1 and the rhombic form M2). The result shows that the I-V characteristics of the cluster are closely related to the structure of the cluster. The change in the structure of the cluster causes a change in the coupling process between the cluster and the electrode, resulting in a change in its transmission characteristics. Compared with the linear form M1 system, the rhombic form M2 system has obvious rectification and negative differential resistance (NDR) effects, which makes it more advantageous as a candidate for molecular devices.

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