Patent ID: 8658449

Claim:
A method of manufacturing a semiconductor layer, comprising: forming a p-type semiconductor layer of a laminated body containing As by epitaxial growth by supplying AsH 3 and a first raw material gas containing a p-type impurity element, the laminated body including a first semiconductor layer containing As and an Al composition formed by epitaxial growth by supplying of the AsH 3 , the first raw material, and a second raw material gas containing Al, the Al composition of the first semiconductor layer being 0.9 or more; stopping the supply of the AsH 3 without separately supplying a new gas when a process temperature equals a target chamber temperature set to 500 degrees Celsius or more and after the p-type semiconductor layer is formed; and changing the target chamber temperature when the supply of the AsH 3 is stopped to a subsequent temperature based on a magnitude of an Al composition of a semiconductor layer having a largest Al composition out of the semiconductor layers, wherein the laminated body has a structure in which the first semiconductor layer and a second semiconductor layer having an Al composition smaller than the Al composition of the first semiconductor layer are alternately layered.