Dresden 2026 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

O: Fachverband Oberflächenphysik

O 45: Organic molecules on inorganic substrates: Adsorption and growth – Poster

O 45.11: Poster

Tuesday, March 10, 2026, 14:00–16:00, P2

Formation and Electronic Interaction of Donor–Acceptor Heterostructures — •Philipp Janzen, Jonas Brandhoff, Felix Otto, Maximilian Schaal, Roman Forker, and Torsten Fritz — Institute of Solid State Physics, Friedrich Schiller University Jena, Helmholtzweg 5, 07743 Jena, Germany

Combining donating and accepting molecules lies at the heart of many electronic devices. These molecular heterostructures allow for a delicate tailoring of charge-transfer interfaces. In this work, we investigate such heterostructures formed by the adsorption and structural organization of 1,4,5,8,9,11-hexaazatriphenylenehexacarbonitrile (HATCN) and 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) on Au(111). Owing to their shared symmetry, HHTP and HATCN form a well-matched co-assembly on the surface. Employing scanning tunneling microscopy (STM) and low-energy electron diffraction (LEED), we are able to resolve the structural properties of the individual systems, as well as the combined heterostructure. Additionally, X-ray photoelectron spectroscopy (XPS) and photoemission orbital tomography (POT) provide insights into charge-transfer processes and the electronic structure at the interface.

Keywords: STM; POT; XPS