Epitaxy Beyond Periodic Lattices: Interfacial Modulation Enabled by Defect State 2D Materials

Remote epitaxy (RE) utilizes substrate polarity to guide the growth of single-crystal films across 2D materials (2DMs) such as graphene, offering a promising strategy for the heterogeneous integration of materials and devices. However, the effect of structural characteristics in 2DMs on RE remains unexplored. Here, the critical impact of defects in 2DMs on RE is reported. It is demonstrated experimentally and theoretically that RE can be realized on defective h-BN (DBN), but not on pristine h-BN