The ‘Physics and elaboration of 2D crystals’ (2D+) team was created in 2022. Its aim is to develop activities around 2D crystals that go beyond the problems of growth alone, which have been studied for more than ten years at the CRHEA. To this end, it brings together researchers and engineers with expertise in epitaxy and transfer techniques, methods that we can combine to develop novel structures. Epitaxial structures and original devices are analysed within the team using our expertise in spectroscopy or transmission electron microscopy, but also in collaboration with other teams in the laboratory or with external partners.
A large part of the team's research concerns the growth of two-dimensional crystals. A large part of the team's research concerns the growth of two-dimensional crystals. The team has extensive experience in the growth of graphene on SiC by hydrogen CVD, and the growth of BN by a similar technique is also under development. More recently, the team has initiated an activity involving the growth of TMD by MBE and is currently working on combining growth by MBE and by DLI-CVD in a cluster. More generally, the team is also interested in the fabrication of new heterostructures, obtained either by MBE or CVD growth of 3D on 2D,or by dry transfer, and that can be studied by optical microspectroscopy and by transmission electron microscopy at high resolution. In the field of 2D-based quantum nanophotonics, our aim is to control excitons to generate ordered arrays of single-photon sources and to exploit quantum collective effects for applications in quantum technologies (key distribution, sensors, communications)..
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