Patent ID: 6936858

Claim:
A light-emitting diode comprising: a semiconductor substrate; and a layered structure comprising an AlGaInP type compound semiconductor material and provided on the semiconductor substrate, wherein the layered structure comprises: a light-emitting structure composed of a pair of cladding layers and an active layer for emitting light provided between the pair of cladding layers; and a current diffusion layer comprising an AlGaInP type material which is lattice-mismatched with the light-emitting structure, wherein a lattice mismatch Δa/a of the current diffusion layer with respect to the light-emitting structure defined by the following expression is −1% or smaller: Δ a/a =( a d −a e )/ a e where a d is a lattice constant of the current diffusion layer, and a e is a lattice constant of the light-emitting structure, and wherein crystal of the semiconductor substrate is inclined by 8° (degrees) to 20° (20 degrees) in a 011 direction with respect to a (100) plane thereof.