Figure 2
From: Formation of a-plane facets in three-dimensional hexagonal GaN structures for photonic devices
Cross-sectional view SEM images of outer a-plane {\(11\bar{2}0\)} facets of (a) sample A, and (b) sample C. (c) High magnification SEM images of sample A, and (d) sample C. The yellow guide line in (b) indicates the growth front of sample A. (e) Cross-sectional schematic representing the time evolution of outer a-plane {\(11\bar{2}0\)} facets. (f) Cross-sectional SEM image along the [\(2\bar{1}\bar{1}0\)] direction. (Scale bars: 0.5 μm).
