Patent ID: 7700940
Filing Date: 2010-04-20
Classification: B82Y,H01L

Abstract:
1. A gallium nitride (GaN)-based compound semiconductor device, comprising: a GaN-based light emitting member; a buffer layer adjacent to the light emitting member; and a strained layer superlattice (SLS) clad layer, wherein the light emitting member comprises a multilayer quantum well structure including an InGaN well layer and an AlInGaN barrier layer, wherein a compositional ratio of Al in the AlInGaN barrier layer is 14% or greater and 40% or smaller, and a compositional ratio of In in the AlInGaN barrier layer is 0.1% or greater and 5% or smaller, wherein the GaN-based light emitting member emits ultraviolet light having a wavelength of 375 nm or shorter, wherein the multilayer comprises at least two of the InGaN well layers and two of the AlInGaN barrier layers, in which the InGaN well layers and AlInGaN barrier layers are alternately layered, and wherein a thickness of each of the InGaN well layer is 1 nm or greater and 2 nm or smaller.