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Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2023, Tutor: Marius Vasile Costache

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Van derWaals materials, characterized by their planar crystalline structures and weak interlayer interactions, hold immense potential for creating atomically thin heterostructures. In this experimental work, we study the mechanical exfoliation through the ”scotch-tape” method of van derWaals materials, specifically graphene and BiSbSe3, and the fabrication of heterostructures using these materials. Optical microscopy analysis provided insights into the color contrast and intensity profiles of the graphene flakes, enabling qualitative estimation of the number of layers. However, in the case of BiSbSe3, the obtained flakes were unevenly broken, consisting of both few-layers and significantly greater numbers of layers, hindering the qualitative determination of single-layer thickness.