Berlin 2018 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 49: Poster: Nanostructures on Surfaces I

O 49.27: Poster

Dienstag, 13. März 2018, 18:15–20:30, Poster A

Self-assembly and charging of molecules on insulating films — Philipp Scheuerer and •Jascha Repp — University of Regensburg, Regensburg, Germany

Thick insulating films and bulk insulators enable the charging of adsorbates and have been used in studies to investigate charge transfer between individual molecules[1] and multiple charging of ensembles of molecules[2]. Self assembly on insulating films[3] allows one to investigate charging phenomena in ordered structures.

Here, we study self-assembled Perylenetetracarboxylic dianhydride (PTCDA) islands on a few layers of NaCl on Au(110). From AFM imaging with submolecular contrast, as well as dI/dV- and KPFS-measurements, we conclude that individual molecules in self assembled PTCDA islands can be charged. Furthermore, charges can be controllably transferred to neighboring molecules within a PTCDA island.

[1] W. Steurer et al., Nature Communications 6, 8353 (2015)

[2] P. Rahe et al., Nano Letters 16, 911 (2016)

[3] S. Burke et al., Nature Communications 6, 8312 (2015)