Patent ID: 8390004
Filing Date: 2013-03-05
Classification: H01L

Abstract:
1. A light-emitting structure, comprising: a p-doped region for injecting holes; an n-doped region for injecting electrons; and an active zone between the n-doped region and the p-doped region, the active zone comprising a plurality of InGaN quantum wells of a first type and at least one InGaN quantum well of a second type, wherein the InGaN quantum well of the second type has a higher indium content than the InGaN quantum well of the first type; wherein the InGaN quantum wells of the first type are separated from one another by (In)GaN barrier layers of the first type; wherein a barrier layer of a second type is arranged between the quantum well of the second type and a peripherally located quantum well of the first type; wherein a thickness of the barrier layers of the first type and a thickness of the barrier layer of the second type are different; wherein the barrier layers of the first type are silicon-doped with a concentration of between 1.0×10 wherein the barrier layer of the second type is doped with silicon with a concentration of no more than 5×10 wherein the barrier layers of the first type and of the second type have a thickness between 2 nm and 6 nm.