Patent ID: 6465335
Filing Date: 2002-10-15
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device comprising steps of:(a) forming a gate insulator film on a main surface of a semiconductor substrate; (b) forming a first semiconductor film on said gate insulator film, said first semiconductor film being doped with a prescribed impurity and having partially a layer consisting of a material having a higher impurity activation rate than polysilicon; (c) forming a barrier film on said first semiconductor film; (d) forming a metal film on said barrier film; and (e) selectively removing said metal film, said barrier film and said first semiconductor film in this order thereby forming a gate electrode, wherein said step (b) includes steps of: (b-1) forming a second semiconductor film consisting of said material as said layer; and (b-2) forming a third semiconductor film different in impurity activation rate from said second semiconductor film.