Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

DS: Fachverband Dünne Schichten

DS 20: Poster

DS 20.44: Poster

Donnerstag, 12. März 2026, 18:30–20:30, P2

Interfacial electronic structure of molecular adsorbates on WS2 and doped MoSe2 — •Carolin Sabrina Schüle, Michael Lämmerhofer, Joschua Bueble, Louisa Adlung, and Heiko Peisert — Institut für Physikalische und Theoretische Chemie Universität Tübingen, Germany

MoSe2 and WS2 are layered transition metal dichalcogenides (TMDCs) and promising alternative to conventional semiconductor materials. We studied interface properties of different molecules on MoSe2 and WS2. In the case of MoSe2 also p- and n-doped substrates were studied. Comparably weakly interacting phthalocyanines (CoPc, MnPc, CoPcF16) were compared to strong electron acceptors (HATCN, C60). It is known that opotoelectronic properties of TMDCs such as MoS2 can be tuned by transition metal phthalocyanines (TMPCs), depending strongly on the central metal atom of the phthalocyanine,[1], the mechanism, however, is not completely understood. Generally, for TMDCs two different interaction channels are possible: Interaction via the central metal atom and the macrocycle. It is shown that the different ionisation potential of the molecules affect the size of interface dipoles, as well as a band bending in the bulk substrates. However, the role of interface states is not negligible. Also, the doping level of MoSe2 have an influence on the strength of the interaction, although no integer charge transfer might be expected. [1] DOI: 10.1021/jacs.1c07795

Keywords: Interfaces; Semiconductors; XPS; Phthalocyanines; Transition-metal dichalcogenides