50 citations · 121 across the 6 of their papers we have counts for
6 papers
Polaron formation: Ehrenfest dynamics vs. exact results
Guangqi Li, Bijan Movaghar, Abraham Nitzan +1
We use a 1-dimensional tight binding model with an impurity site characterized by electron-vibration coupling, to describe electron transfer and localization at zero temperature, a…
Yield of exciton dissociation in a donor-acceptor system
Guangqi Li, Abraham Nitzan, Mark A. Ratner
A simple model is constructed to describe dissociation of charge transfer excitons in bulk heterojunction solar cells, and its dependence on the physical parameters of the system.…
Compensation of Coulomb blocking and energy transfer in the current voltage characteristic of molecular conduction junctions
Guangqi Li, Manmohan S. Shishodia, Boris D. Fainberg +2
We have studied the influence of both exciton effects and Coulomb repulsion on current in molecular nanojunctions. We show that dipolar energy-transfer interactions between the sit…
Coherent charge transport through molecular wires: "Exciton blocking" and current from electronic excitations in the wire
GuangQi Li, Boris D. Fainberg, Abraham Nitzan +2
We consider exciton effects on current in molecular nanojunctions, using a model comprising a two two-level sites bridge connecting free electron reservoirs. Expanding the density…
Switching the current through molecular wires
Ulrich Kleinekathoefer, GuangQi Li, Sven Welack +1
The influence of Gaussian laser pulses on the transport through molecular wires is investigated within a tight-binding model for spinless electrons including correlation. Motivated…
Optimal control of molecular electronics by femtosecond laser pulses
GuangQi Li, Sven Welack, Michael Schreiber +1
Combining the features of molecular wires and femtosecond laser pulses gives the unique opportunity to optically switch electron currents in molecular devices with very high speed.…