Semiconductor light emitting element and manufacture thereof

A semiconductor light-emitting device, including a first substrate of a first conductivity type, a first bonding layer provided on the first substrate and consisting essentially of a GaP material of the first conductivity type, a second bonding layer provided on the first bonding layer, coincident with the first bonding layer in the planar direction of the crystal, having the first conductivity type, and consisting essentially of a material represented by a formula In x Ga y P, where 0 ‰¤ x, y 1, and x + y = 1, and a light-emitting layer comprising a first cladding layer, an active layer, and a second cladding layer, which are successively provided on the second bonding layer, each of the active layer and first and second cladding layers consisting essentially of a material represented by a formula Tn x Ga y Al z P, where x + y + z = 1, and 0 ‰¤ x, y, z ‰¤ 1.