Figure 2 | Scientific Reports

Figure 2

From: Hydrogen Generation using non-polar coaxial InGaN/GaN Multiple Quantum Well Structure Formed on Hollow n-GaN Nanowires

Figure 2

Tilt view FE-SEM images of (a) solid n-GaN NWs, (b) hollow n-GaN NWs; top view FE-SEM images of (a inset) solid n-GaN NW shows clear hexagonal shape and (b inset) a nano hole was noticed at the center of hexagonal hollow n-GaN NW; (c-1,3) and (c-2,4) show IFFT and SAED patterns of the solid and hollow n-GaN NW, respectively; (d) single-crystal XRD patterns of solid and hollow n-GaN NWs; (e) comparison of room temperature PL spectra of solid and hollow n-GaN NWs.

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