Patent ID: 8431496
Filing Date: 2013-04-30
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, comprising the steps of: introducing a semiconductor material gas into a treatment chamber; forming a first semiconductor film in the treatment chamber over a gate insulating layer provided to cover a gate electrode; evacuating the semiconductor material gas from the treatment chamber; introducing a rare gas into the treatment chamber; performing plasma treatment on the first semiconductor film in the treatment chamber; forming a second semiconductor film over the plasma treated first semiconductor film; forming a third semiconductor film comprising a first impurity element imparting one conductivity type over the second semiconductor film; forming a semiconductor stack including the treated first semiconductor film, the second semiconductor film and the third semiconductor film; and forming a source electrode and a drain electrode in contact with the third semiconductor film, wherein formation of the first semiconductor film and the plasma treatment are performed without change in pressure and temperature of the treatment chamber.