Berlin 2018 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 35: Organic-inorganic hybrid systems and organic films IV

O 35.7: Vortrag

Dienstag, 13. März 2018, 15:30–15:45, MA 042

Rectification in molecular charge transfer systems — •Simon Liebing, Torsten Hahn, and Jens Kortus — TU Bergakademie Freiberg, Institute for Theoretical Physics, Germany

Charge transfer enabling rectification in molecular junctions was suggested by Ratner in 1974.[1] In the early 2000’s strongly coupled system were excluded, because the strong coupling leads to symmetric transport behavior.[2] That left only weakly coupled charge transfer systems as candidates.[3] The authors studied different weakly coupling charge transfer dimers combining polycylic hydrocarbons and TNCQ-derivatives between gold leads. The observed rectifications are comparable to molecular systems using an asymmetric coupling to metallic leads. This shows that charge transfer is not alone suffient to achieve rectification in molecular electronics systems.

Aviram, A. & Ratner, M. Chem. Phys. Lett. 29, 277 (1974)
Mujica, V., Ratner, M. & Nitzan A. Chem. Phys. 281, 147 (2002)
Hahn T., Liebing S., & Kortus J. Nanoscale 6, 14508 (2014)