Fig. 1: Characterization of ML WSe2 flakes with different sizes.
From: Atomistic insights into highly active reconstructed edges of monolayer 2H-WSe2 photocatalyst
a Optical microscopy images of flakes with different perimeters (\(P\)) and characteristic lateral sizes (\(L\)). Scale bar = 5 μm. b Large-area optical microscopy image. Inset shows the linear curve of the number of flakes vs. the area. Scale bar = 5 μm. c XPS spectra of W 4f and Se 3d. d \(\delta\) value versus the average perimeter. The line is added as a guide to the eye. e Absorption (red line), irradiance of the Xe lamp (blue line) spectrum, and absorbable photon flux (green filled curve). f Low-temperature PL spectra of flakes with different lateral sizes fitted with three Gaussian curves. g Temperature-dependent PL spectra of a flake with \(L\) ≈ 0.7 μm.
