Figure 3ab

Micro PL mapping images of the dislocation density of GaN films with the variation of thickness. (3a, left) 3 µm GaN film, (3b, right) 300 µm GaN film

Figure 3cd

Micro PL mapping images of the dislocation density of GaN films with the variation of thickness. (3c, left) 500 µm GaN film, (3d, right) 750 µm GaN film

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