Patent ID: 8759852

Claim:
A semiconductor device comprising: a substrate; and a stacked body on the substrate via a joining metal layer comprising: a device portion including from a bottommost layer to a topmost layer included in the stacked body, and a peripheral portion surrounding and provided around the device portion, the peripheral portion being a portion of the bottommost layer to the topmost layer included in the stacked body and including a portion of a semiconductor layer in contact with the joining metal layer, the semiconductor layer being one selected from In x (Ga y Al 1−y ) 1−x P (0≦x≦1 and 0≦y≦1), B x In y Ga z Al 1−x−y−z N (0≦x≦1, 0≦y≦1, 0≦z≦1, and x+y+z≦l) and GaAlAs.