| 초록 |
The structure of an MoS2 layer strongly influences the chemical, physical, and electronic properties of the film. Here, we report the preparation of a new buckled structure in edge-oriented MoS2 films over large areas simply by introducing a graphene interfacial substrate below the Mo film prior to MoS2 film growth. Vertically aligned MoS2 sheets dominated the bulk of the film, whereas horizontally aligned MoS2 sheets were favored near the graphene surface. The dimensions of the buckled MoS2 structure were largely influenced by substrate adhesion energy, which was altered by the domain structure and thickness of the graphene layer. The buckled MoS2 film provided a much better catalytic performance compared to smooth MoS2 structures, displaying a decreased onset potential in a hydrogen evolution reaction. This approach may potentially be extended to the creation of buckled structures in other 2D materials. |
