Patent ID: 8384063

Claim:
A light emitting device comprising: a stacked body including at least a light emitting layer made of In x (Al y Ga 1-y ) 1-x P (0≦x≦1, 0≦y≦1), a p-type cladding layer made of In x (Al y Ga 1-y ) 1-x P (0≦x≦1, 0≦y≦1), a p-type current diffusion layer made of In x (Al y Ga 1-y ) 1-x P (0≦x≦1, 0≦y≦1) or GaP, and a bonding layer made of a semiconductor; a p-side electrode; a substrate in which deviation in a lattice constant at a bonding interface with the bonding layer is larger than deviation in lattice constants between the light emitting layer and the bonding layer; and a contact layer provided between the p-side electrode and the current diffusion layer, having generally the same size as the p-side electrode, and made of p-type GaAs, the p-type cladding layer being located more distant from the bonding interface than the light emitting layer, the p-type cladding layer having a carrier concentration of 0.5×10 17 cm −3 or more and 3×10 17 cm −3 or less, and the p-type current diffusion layer being provided between the p-side electrode and the p-type cladding layer.