Two-Dimensional Mo_xW_1-xS₂ Graded Alloys: Growth and Optical Properties.

ABSTRACT: Two-dimensional (2D) transition metal dichalcogenides can be alloyed by substitution at the metal atom site with negligible effect on lattice strain, but with significant influence on optical and electrical properties. In this work, we establish the relationship between composition and optical properties of the Mo_xW_1-xS₂ alloy by investigating the effect of continuously-varying composition on photoluminescence intensity. We developed a new process for growth of two-dimensional Mo_xW_1-xS₂ alloys that span nearly the full composition range along a single crystal, thus avoiding any sample-related heterogeneities. The graded alloy crystals were grown using a diffusion-based chemical vapor deposition (CVD) method that starts by sy

SUBMITTER: Bogaert K 

PROVIDER: S-EPMC6110786 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature