Patent ID: 9117968
Filing Date: 2015-08-25
Classification: H01L

Abstract:
1. A light-emitting diode (LED) structure, comprising: a bonding layer disposed over a substrate, wherein the bonding layer contains AuSn or AuIn; a metal layer disposed over the bonding layer; a p-type doped gallium nitride (p-GaN) layer disposed over the metal layer; a n-type doped gallium nitride (n-GaN) layer approximate the p-GaN layer; a multiple quantum well (MQW) structure disposed between the n-GaN layer and the p-GaN layer; and a conductive contact disposed on the n-GaN layer; wherein the n-GaN layer includes a rough surface with randomly distributed nano-sized dips, wherein the nano-sized dips have diameters distributed between about 100 nm and about 600 nm and a dip density ranging from about 10