Fabrication And Optical Performance Of Mo1-Xwxs2 Monolayer With Different Composition Ranges Via One-Step Chemical Vapor Deposition Approach

Fabrication of 2D TMDCs with variable bandgap can supply a prospective platform for the multi-functional applications in optoelectronics. Here, we present a one-step CVD strategy for realization of 2D Mo1-xWxS2 flakes with different X ranges through adjusting growth temperature. Detailed Raman and photoluminescence spectra/mappings have elucidated that as-produced Mo1-xWxS2 alloys exhibit significant composition dependent structural and optical modulation. The variation of Mo1-xWxS2 alloy with diverse composition ranges has discussed based on the effect of growth temperature on the evaporation and interdiffusion of Mo/W atoms. The present results will provide a favorable guidance for the controllable fabrication of other 2D TMDC alloys, providing prospective materials for functional optoelectronics.Fabrication of 2D TMDCs with variable bandgap can supply a prospective platform for the multi-functional applications in optoelectronics. Here, we present a one-step CVD strategy for realization of 2D Mo1-xWxS2 flakes with different X ranges through adjusting growth temperature. Detailed Raman and photoluminescence spectra/mappings have elucidated that as-produced Mo1-xWxS2 alloys exhibit significant composition dependent structural and optical modulation. The variation of Mo1-xWxS2 alloy with diverse composition ranges has discussed based on the effect of growth temperature on the evaporation and interdiffusion of Mo/W atoms. The present results will provide a favorable guidance for the controllable fabrication of other 2D TMDC alloys, providing prospective materials for functional optoelectronics.