Theory of the Rectifying Performance in Molecular Device: The Role of Anchoring Groups
The electronic transport of the single molecule via different anchoring groups is studied using density functional theory in conjunction with the nonequilibrium Green’s function. The results show that the electronic transport properties are strongly dependent on the anchoring groups. Asymmetric electrical response for opposite biases is observed resulting in significant rectification in current. The transmission coefficients and spatial distributions of molecular orbitals under various external biases voltage are analyzed, and it suggests that the asymmetry of the coupling between the molecule and the electrodes with external bias leads to rectifying performance.
Yuan Ming Huang
C. J. Xia et al., "Theory of the Rectifying Performance in Molecular Device: The Role of Anchoring Groups", Solid State Phenomena, Vols. 181-182, pp. 344-347, 2012