Dresden 2017 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 27: 2D Materials beyond Graphene (jointly with O)
DS 27.20: Poster
Dienstag, 21. März 2017, 18:30–20:30, P2-EG
Lateral heterostructures of MoS2 and carbon nanomembranes — •Antony George1, Christof Neumann1, Zian Tang1, Andreas Winter1, Uwe Hübner2, Michael Mohn3, Ute Kaiser3, and Andrey Turchanin1 — 1Friedrich Schiller University Jena, Institute of Physical Chemistry, D-07743 Jena, Germany — 2Leibniz-Institut für Photonische Technologien e.V., 07745 Jena, Germany — 3Electron Microscopy Group of Material Science, Ulm University, 89081 Ulm, Germany
Atomically thin two dimensional (2D) materials are promising for future ultrathin electronic and optoelectronic devices. In order to realize such devices, it is highly desired to connect/stitch different 2D materials laterally. Here, we present our recent results of the fabrication of lateral heterostructures of molecular thin carbon nanomembranes (CNMs) with MoS2 by electron beam assisted crosslinking. To this end, MoS2 single layer crystals grown by chemical vapour deposition (CVD) were transferred onto gold films on mica substrates. Then, self-assembled monolayers of 4*-nitro-1, 1*-biphenyl-4-thiol (NBPT) were grown on the areas between the MoS2 crystals. Electron beam irradiation was employed to crosslink the SAM molecules with each and with the edges of the MoS2 crystals. The formed CNM-MoS2 lateral heterostructures were transferred onto new solid and holey substrates and characterized by complementary methods including Raman spectroscopy, atomic force microscopy (AFM), helium ion microscopy (HIM) and high resolution transmission electron microscopy (HRTEM).