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The recent development of Liquid Phase Exfoliation (LPE) of 2D materials hasenabled the formulation of inks with rheological properties adapted to numerousliquid deposition methods. This has allowed the fabrication of various types ofprinted devices with unique features stemming from the nano-structure of theprinted 2D layers. In this short communication, we demonstrate that thepreferred crystalline orientation of printed MoS2 flakes depends drasticallyupon the printing method employed to deposit the layers. Using angle resolvedX-Ray Diffraction (XRD) to measure Pole Figure and subsequently calculateOrientation Distribution Functions (ODF), we show that the spin-coating methodyields the best basal fiber texture, most likely because of the shear force atwork on the flakes during the deposition process. This interim report therebypaves the way to further investigations and fine control of the preferredcrystalline orientation of printed 2D flakes for the development of dedicateddevices.

Control and characterization of the preferential crystalline orientation of MoS2 2D flakes in printed layers