Patent ID: 7141467
Filing Date: 2006-11-28
Classification: H01L

Abstract:
1. A manufacturing method of a semiconductor device comprising: doping n-type impurity ions into a selected portion of a surface region of a p-type silicon semiconductor region; doping p-type impurity ions into portions of a surface region of the silicon semiconductor region; activating the n-type and p-type impurity ions to form an n-type diffusion region in the surface region of the silicon semiconductor region and form a p-type diffusion layer in a depth direction of the silicon semiconductor region; and performing heat treatment to form a Ni silicide film in a surface region of the n-type diffusion region after depositing Ni on the surface region of the n-type diffusion region, wherein after formation of the Ni silicide film, the p-type diffusion layer has an impurity profile in which a peak concentration of not lower than 1E20 cm