Fig. 3: Construction of the cocatalyst/GaN system with strong electronic interaction. | Nature Communications

Fig. 3: Construction of the cocatalyst/GaN system with strong electronic interaction.

From: Enhanced solar hydrogen production via reconfigured semi-polar facet/cocatalyst heterointerfaces in GaN/Si photocathodes

Fig. 3

a Schematic diagram of the synthesis of Au nanoparticle/GaN NW system via the photoelectron deposition method. b FDTD simulations of the electric field intensity (|E|) over Au/GaN NWs at 655 nm. c PL spectra of GaN/Si, Au/GaN/Si, and Au/Faceted-GaN/Si. d TEM light-field image of Au/Faceted-GaN/Si. e The TEM dark-field image of Au/Faceted-GaN/Si. f The aberration-corrected HAADF-STEM image of Au/Faceted-GaN/Si. g EDS elemental mapping of Au/Faceted-GaN/Si. h N K-edge spectrum of GaN/Si, Au/GaN/Si, Faceted-GaN/Si, and Au/Faceted-GaN/Si. i High-resolution N 1s XPS spectrum of GaN/Si, Au/GaN/Si, Faceted-GaN/Si, and Au/Faceted-GaN/Si. j High-resolution Au 4f XPS spectrum of Au/GaN/Si and Au/Faceted-GaN/Si.

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