Patent ID: 8652958
Filing Date: 2014-02-18
Classification: B82Y,H01L

Abstract:
1. A process for forming a vertical geometry light emitting diode capable of emitting light in the electromagnetic spectrum comprising: providing a substrate; coating said substrate with a lift-off layer comprising Al growing a strain relief superlattice layer on said lift-off layer wherein said strain relief superlattice layer comprises repeating periods of Al growing a first doped layer on said strain relief superlattice layer wherein said first doped layer comprises Al growing a multilayer UV emitting quantum well region on said first doped layer comprising alternating layers of: a quantum well comprising Al a barrier layer on each surface of said quantum well having a band gap larger than a quantum well bandgap and said barrier layer comprises Al growing a second doped layer on said quantum well region wherein said second doped layer comprises Al growing a contact layer on said second doped layer comprising Al removing said substrate by a laser assisted lift-off process; lifting off said strain relief superlattice layer and said lift-off layer; forming a first ohmic contact on the backside of the first doped layer; and forming a second ohmic contact on the contact layer in a vertical geometry orientation.