Research Article

Effect of Top-Region Area of Flat-Top Pyramid Patterned Sapphire Substrate on the Optoelectronic Performance of GaN-Based Light-Emitting Diodes

Figure 3

XRD rocking curves obtained for (a) the symmetric GaN(002) plane and (b) the asymmetric GaN(102) plane of GaN epilayers grown on CSS and various FTP-PSSs.
(a)
(b)