Patent ID: 9269852
Filing Date: 2016-02-23
CPC Classification: H01L

Claim Text:
1. A semiconductor light-emitting diode, comprising: a substrate; an n-GaN layer; a quantum well layer; an electron blocking layer having a plurality of first AlGaN layers and a plurality of second AlGaN layers; and a p-GaN layer; wherein: the n-GaN layer, the quantum well layer, the electron blocking layer, and the p-GaN layer are sequentially stacked on the substrate; the first AlGaN layers and the second AlGaN layers are alternately stacked; the adjacent two layers of the first AlGaN layers and the second AlGaN layers have different composition ratios of Al; the composition ratios of Al in the first AlGaN layers gradually change with increasing distance from the quantum well layer; the composition ratios of Al in the second AlGaN layers are the same; and the composition ratios of Al in the first AlGaN layers first decrease and then increase with increasing distance from the quantum well layer, or the composition ratios of Al in the first AlGaN layers first increase and then decrease with increasing distance from the quantum well layer.