Berlin 2018 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 17: Poster Session I
DS 17.34: Poster
Dienstag, 13. März 2018, 18:15–20:15, Poster B
2-Dimensional Atomic Crystals of Transition Metal Dichalcogenides — •Jakub Schusser1,2, Zakariae El Youbi1,3, Jan Minar2, Cephise Cacho3, Christine Richter1, and Karol Hricovini1 — 1University of Cergy-Pontoise, Paris, France — 2University of West-Bohemia, New technologies research centre, Plzen, Czech Republic — 3CLF, RAL, Harwell Campus, Didcot, United Kingdom
Recent development in two-dimensional materials such as graphene, hexagonal boron nitride or transition metal dichalcogenides (TMDCs) has shown such material promising for several applications. TMDCs in particular, are a group of layered materials (e.g. NbSe2, MoS2, MoSe2 WS2, MoTe2) which, despite being structurally similar are particularly interesting due to their strong chemical stability, large flexibility, optical properties and the array of electronic properties ranging from semiconducting to metallic depending on their exact composition, geometry and thickness. Due to similarities such as band gap in a visible spectrum, TMDCs have previously been studied for photovoltaic applications.
We measured thin films (one and several monolayers) of MoSe2, MoS2 and MoTe2 using photoelectron spectroscopy (XPS, ARPES, SARPES). More specifically, the aim of our studies was to determine the changes in the electronic structure when depositing the films on different substrates and when the film thickness is increasing. We followed as well the evolution of the spin texture near the K, K* and M points of the surface Brillouin zone.