Patent ID: 8847252
Filing Date: 2014-09-30
Classification: H01L

Abstract:
1. A semiconductor light emitting device comprising: an n-type region; a p-type region; and a light emitting region disposed between the n-type region and the p-type region in a double-heterostructure that includes only a single III-nitride light emitting layer, this light emitting layer being the only layer in the device from which light is produced when current flows between the n-type and p-type regions; wherein the light emitting layer has a thickness between 100 Å and 600 Å, and at least a portion of the light emitting layer has a graded composition, wherein an InN composition in the light emitting layer is graded from a first InN composition in a first portion of the light emitting layer closest to the n-type region to a second InN composition in a second portion of the light emitting layer closest to the p-type region, wherein the first InN composition is greater than the second InN composition, wherein the InN composition is graded linearly from the first InN composition to the second InN composition.