Patent ID: 8674338
Filing Date: 2014-03-18
Classification: H01L

Abstract:
1. A semiconductor light emitting device, comprising: an n-type semiconductor layer containing a nitride semiconductor; a p-type semiconductor layer containing a nitride semiconductor; and a light emitting portion provided between the n-type semiconductor layer and the p-type semiconductor layer, the light emitting portion including a plurality of barrier layers and a plurality of well layers, the plurality of barrier layers and the plurality of well layers being alternately stacked, the well layers including an n-side end well layer which is one of the well layers and is closest to the n-type semiconductor layer among the well layers, the n-side end well layer containing In the barrier layers including an n-side end barrier layer which is one of the barrier layers and is closest to the n-type semiconductor layer among the barrier layers, the n-side end barrier layer containing In the well layers including a p-side end well layer which is another of the well layers and is closest to the p-type semiconductor layer among the well layers, the p-side end well layer containing In the barrier layers including a p-side end barrier layer which is another of the barrier layers and is closest to the p-type semiconductor layer among the barrier layers in a region between the p-side end well layer and the n-type semiconductor layer, the p-side end barrier layer containing In a first ratio being defined as (wp×t a second ratio being defined as (wn×t the first ratio being higher than 1.9 times the second ratio and being not higher than 2.3 times the second ratio, wherein the In composition ratio wp is higher than the In composition ratio wn and the thickness t