Patent ID: 8187900
Filing Date: 2012-05-29
Classification: H01L

Abstract:
1. A method of fabricating a GaN vertical light emitting diode comprising: providing a first substrate capable of supporting GaN epitaxial growth thereon; forming a layer of undoped GaN on the first substrate; forming a layer of n-doped GaN over the first layer of undoped GaN; forming a multiple quantum well active layer over the n-doped GaN layer; forming a p-doped GaN layer over the multiple quantum well active layer; forming a p-electrode-including layer on the p-doped GaN layer, the p-electrode configured to act as a mirror; forming plural vertical polish stops from a material having a hardness greater than the hardness of GaN, each vertical polish stop passing through the p-doped GaN layer, the active layer, and terminating in either the n-doped GaN layer or the undoped GaN layer; forming a conductive host substrate layer over the p-electrode-including layer; polishing away the first substrate and at least a portion of the undoped GaN layer to reveal at least a portion of the n-doped GaN layer; and forming an n-electrode on the n-doped GaN layer.