Selective Chemical Vapor Deposition Growth of WS₂/MoS₂ Vertical and Lateral Heterostructures on Gold Foils.

ABSTRACT: Vertical and lateral heterostructures consisting of atomically layered two-dimensional (2D) materials exhibit intriguing properties, such as efficient charge/energy transfer, high photoresponsivity, and enhanced photocatalytic activities. However, the controlled fabrication of vertical or lateral heterojunctions on metal substrates remains challenging. Herein, we report a facile and controllable method for selective growth of WS₂/MoS₂ vertical or lateral heterojunctions on polycrystalline gold (Au) foil by tuning the gas flow rate of hydrogen (H₂). We find that lateral growth is favored without H₂, whereas vertical growth mode can be switched on by introducing 8-10 sccm H₂. In addition, the areal coverage of the WS₂/MoS

SUBMITTER: Wang Z 

PROVIDER: S-EPMC9144509 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature