Patent ID: 7804100
Filing Date: 2010-09-28
Classification: H01L,H01S

Abstract:
1. A structure comprising: a device structure comprising a III-nitride light emitting region disposed between a p-type region and an n-type region, the light emitting region comprising a wurtzite crystal structure; and a non-III-nitride material disposed between two surfaces, wherein: one of the surfaces is a surface of a wurtzite crystal portion of the device structure, the wurtzite crystal portion of the device structure comprising alternating layers of group III atoms and group V atoms, wherein the surface of the wurtzite crystal portion of the device structure comprises a surface of a layer of group III atoms; and the other of the surfaces is a surface of a wurtzite crystal portion of a second structure, the wurtzite crystal portion of the second structure comprising alternating layers of group III atoms and group V atoms, wherein the surface of the wurtzite crystal portion of the second structure comprises a surface of a layer of group III atoms; and the non-III-nitride material is in direct contact with the two surfaces; wherein across an interface disposed between the light emitting region and the p-type region, a wurtzite c-axis, defined as pointing from a nitrogen face of a III-nitride unit cell to a group III atom face of the III-nitride unit cell, points toward the light emitting region.