Optical Properties of WSe2 Thin Flakes

The paper reports synthesis details of 2D WSe2 flakes, grown at short pre-deposition time of W layer/clusters subsequently followed by selenization using Thermally Assisted Conversion (TAC) method. Atomic Force Microscopy (AFM) and Raman analysis reveal the formation of different flake shapes (mainly dendritic and triangular) with typical Raman modes for ultrathin films close to the monolayer limit.