Valentina REIN,

Chercheuse à l’ESRF Grenoble

Le 20/07/2026 à 14h – Salle du Conseil

Abstract:
The properties of ultrathin materials are largely decided during growth, in transient stages that post-mortem characterization misses. Across my career, I have followed and steered this process in real time: first for organic semiconductor films for photovoltaics, linking growth and molecular packing to excitonic and charge-transfer properties, and then for 2D and wide-bandgap crystals. I will show how coupling growth with in situ probes and data-driven analysis turns trial-and-error synthesis into controlled epitaxy of graphene, hexagonal boron nitride (hBN), and beyond. I will close with perspectives for future work: hBN as an integration platform for device-grade van der Waals heterostructures, with in situ growth control as the engine.