Figure 2. The space-confined self-assembly approach for 2D TMD thin-film deposition and results with WSe₂.

(a) shows a schematic of the deposition method as described in the main text. Step 1: injection of WSe₂ dispersion; Step 2: flake confinement and self-assembly; Step 3: hexane removal; step 4: ethylene glycol removal and film deposition; step 5: drying at 150 °C. (b) displays a photograph of a single-flake-layer WSe₂ thin film deposited on flexible Sn:In₂O₃ (ITO)-coated PET plastic, and (c) shows a representative TEM image of a single-flake-layer WSe₂ layer SCSA thin film deposited on a carbon-coated TEM grid. The scale bar is 2μm.