Event Information
Alessandro Troisi
(Università di Bologna)
Interaction Between Nuclear Motions and Charge Transport in Molecular Wires and Organic Semiconductors
Departmental Seminar
Interaction Between Nuclear Motions and Charge Transport in Molecular Wires and Organic Semiconductors
- Abstract:
- Two important effects of the coupling between nuclear and
electronic degrees of freedom will be discussed.
(i) When electrons tunnel through a metal-molecule-metal junction, a small fraction of them excites one or more molecular vibrational levels, losing the equivalent amount of energy. The principles and applications of inelastic electron tunneling spectroscopy will be discussed with special focus on the theoretical models suitable for the interpretation of the experimental results.
(ii) The electronic coupling between molecules in an organic crystal is strongly affected by the small geometric changes due to thermal motions. Computational methods are employed to quantify the effect and a new model is proposed to describe the charge transport mechanism of organic semiconductors.
Host: David Beratan
Departmental Seminar