In-situ wafer bowing measurements of GaN grown on Si (111) substrate by reflectivity mapping in metal organic chemical vapor deposition system |
Wafer bowing images measured by ex-situ method, (a) sample A (bowing: 39.21 μm, concave), (b) sample B (bowing: 189 μm, convex), and (c) sample C (bowing: 8.88 μm, convex). |