Patent ID: 7951617
Filing Date: 2011-05-31
Classification: H01L

Abstract:
1. A production method of a group III nitride semiconductor stacked structure comprising: a first step wherein a buffer layer composed of aluminum gallium nitride (Al a second step wherein, an underlying layer composed of an A-plane undoped gallium nitride layer is grown on the buffer layer; and a third step wherein an n-type contact layer, an n-type clad layer, a light-emitting layer, a p-type clad layer and a p-type contact layer are grown on the underlying layer in this order; wherein, the substrate temperature of the second step is raised in three or more stages, and wherein when the substrate temperature in the first stage of the second step is designated as T1, the substrate temperature in the second stage is designated as T2, and the substrate temperature in the third stage is designated as T3, then 700° C.<T1<1050° C., 1000° C.<T2<1100° C., 1100° C.<T3<1200° C., and T1<T2<T3, and wherein the substrate temperature of the first step is higher than that of the second step.