Patent ID: 8450718

Claim:
A semiconductor light emitting device comprising: a semiconductor layer of (Al y Ga 1-y ) x In 1-x P (0<x≦≦1, 0≦y≦1) that consists of, in order, a first semiconductor layer of a first electrical conduction type, an active layer of a multiple quantum well structure containing a barrier layer and a distortion-containing well layer, a second semiconductor layer of a second electrical conduction type, and a third semiconductor layer of said second electrical conduction type, wherein the semiconductor layer is constructed in the form of a substantially flat laminate; a first electrode electrically connected to said first semiconductor layer; and a second electrode electrically connected to said third semiconductor layer; wherein a part of said active layer located on a second semiconductor layer side is inclined from a surface of the active layer toward its normal, wherein said third semiconductor layer has a composition of Ga 1-z In z P (0≦z≦0.35), and wherein a triangular pyramid structure is formed on a surface of the third semiconductor layer just above the inclined part of the active layer.