Compensation of Coulomb blocking and energy transfer in the current voltage characteristic of molecular conduction junctions

TL;DR

This paper investigates how exciton effects and Coulomb repulsion influence current in molecular nanojunctions, revealing that dipolar energy transfer can counteract Coulomb blocking at high voltages, with tunability via plasmonic nanostructures.

Contribution

It demonstrates that dipolar energy transfer interactions can compensate Coulomb blocking in molecular junctions, offering a new way to control current flow.

Findings

Dipolar energy transfer can offset Coulomb blocking at high voltages.

Tuning plasmonic nanostructures affects energy transfer interactions.

Energy transfer interactions influence current-voltage characteristics.

Abstract

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 sites in the wire can at high voltage compensate Coulomb blocking for particular relationships between their values. Tuning this relationship may be achieved by using the effect of plasmonic nanostructure on dipolar energy transfer interactions.