Patent ID: 8044439

Claim:
A light-emitting device, comprising: a substrate; a light-emitting layer formed over said substrate; an etching stop layer formed over said light-emitting layer; and a current blocking layer formed on said etching stop layer, the current blocking layer including a surface oxide layer formed substantially only on a surface of said current blocking layer by oxidizing only the surface of said current blocking layer, wherein said etching stop layer has a composition of Al x Ga y In 1-x-y P, where 0≦x≦0.1, 0≦y≦1 and 0≦x+y≦1, or In y Ga 1-y , where 0≦y≦1, and wherein said current blocking layer has a composition of Al x Ga y In 1-x-y P, where 0.3≦x≦1, 0≦y≦1 and 0≦x+y≦1, and has a buried structure, wherein a portion of said current blocking layer has an oxygen concentration higher than that of said light-emitting layer, and wherein said current blocking layer has a thickness of not less than 5 nm and not more than 100 nm.