Patent ID: 8476151
Filing Date: 2013-07-02
Classification: H01L

Abstract:
1. A method for manufacturing a nitride semiconductor crystal layer comprising: forming the nitride semiconductor crystal layer having a first thickness on a silicon crystal layer, the silicon crystal layer being provided on a base body, the base body includes a silicon substrate and a silicon oxide film formed on the silicon substrate, the silicon crystal layer having a second thickness before the forming the nitride semiconductor crystal layer, the second thickness being thinner than the first thickness, the forming the nitride semiconductor crystal layer including making at least a portion of the silicon crystal layer incorporated into the nitride semiconductor crystal layer to reduce a thickness of the silicon crystal layer from the second thickness, wherein the forming the nitride semiconductor crystal layer includes, forming a first portion of the nitride semiconductor crystal layer on the silicon crystal layer at a first temperature, and forming a second portion of the nitride semiconductor crystal layer on the first portion at a second temperature, the second temperature being higher than the first temperature; and wherein the forming the nitride semiconductor crystal layer includes, making the silicon crystal layer incorporated into the nitride semiconductor crystal layer to cause disappearance of the silicon crystal layer, and forming a structure including