Dresden 2017 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 56: 2D Materials beyond Graphene

O 56.12: Poster

Dienstag, 21. März 2017, 18:30–20:30, P2-EG

Structural modifications of 2D hexagonal boron nitride caused by ion irradiation — Lara Bröckers, •Henry Bohnen, and Marika Schleberger — Fakultät für Physik, Universität Duisburg-Essen, Lotharstraße 1, 47048 Duisburg, Germany

Single layers of hexagonal boron nitride (hBN) – often called white graphene – are a two-dimensional insulating material, which is interesting as a building block for heterostructures with graphene or other 2D semiconducting materials. Its atomic structure is similar to the structure of graphene. That makes it interesting to test if one can cause the same structural modifications of hBN by ion irradiation, as shown for graphene.[1,2] Therefore we irradiated ultrathin hBN layers with swift heavy ions under grazing incidence. We investigated the efficiency (i.e. number of ions needed to create one folding on average) for different number of layers and different substrates. As a result we found a higher efficiency for the folding of thicker layers hBN in comparison to graphene.

[1] Akcöltekin S. et al. Applied Physics Letters 98 (2011) 101063

[2] Ochedowski O. et al. NimB, 340 (2014) 39-43.