Scalable Growth of Single-Crystal 2D Materials via Chemical Vapor Deposition (CVD)

Compared to their polycrystalline counterparts, monocrystalline 2D materials exhibit more efficient charge and thermal transport, higher mechanical strength, and higher chemical stability due to their lack of defective grain boundaries. Therefore, the development of scalable, high-throughput, and industry-compatible processes to manufacture single-crystal 2D materials is critical. In this talk, I will discuss recent advances from my group on the large-area synthesis of single-crystal 2D materials via chemical vapor deposition (CVD). Topics will include the epitaxial growth of graphene directly on commercially available Ge and Si wafers, hexagonal boron nitride (h-BN) with tunable thickness, a 2D analog of diamond known as diamane, and arrays of graphene nanoribbons with precise placement, alignment, width, and edges. Advanced structural characterization and device performance of these materials will be discussed. Overall, these results are overcoming major materials synthesis challenges towards realizing large-area, device-quality 2D materials for next-gen high-performance electronics and quantum technologies.