Patent ID: 6614059
Filing Date: 2003-09-02
Classification: B82Y,H01L,H01S

Abstract:
A semiconductor light-emitting device of Group III-V compound semiconductors, the device comprising:a quantum well layer, which is formed over a substrate and includes a barrier layer and a well layer that are alternately stacked one upon the other, a band gap of the well layer being narrower than a band gap of the barrier layer, wherein the well layer contains indium and nitrogen, while the barrier layer contains aluminum and nitrogen, wherein a plurality of the barrier layers are provided between p- and n-type conductive layers, and wherein one of the barrier layers that is in contact with the p-type conductive layer has an aluminum mole fraction larger than that of the other barrier layer(s) that is/are not in contact with the p-type contact layer and the aluminum mole fraction of the one barrier layer increases from a part thereof closest to the n-type conductive layer toward another part thereof closest to the p-type conductive layer.