Enhanced Output Power of Light Emitting Diodes With Embedded Air Gap Photonic Cr

Large-scale two-dimensional air-gap photonic crystals (PhCs) were embedded.in an n-type GaN layer to enhance the light emission of GaN-based light-emitting diodes.(LEDs). The embedded-PhCs were obtained through overgrowth on n-GaN templates, which.had air holes array previously fabricated by using n