Patent ID: 7531435

Claim:
A manufacturing method of an n-type semiconductor device, comprising: a first step of forming a gate electrode on a semiconductor substrate with a gate insulating film therebetween; a second step of introducing at least indium (In) into a surface layer of an active region of the n-type semiconductor device of the semiconductor substrate on both sides of the gate electrode with the gate electrode as a mask; a third step of introducing carbon (C) into the surface layer of the active region of the n-type semiconductor device of the semiconductor substrate on both sides of the gate electrode with the gate electrode as a mask; a fourth step of introducing at least phosphorus (P) into the surface layer of the active region of the n-type semiconductor device of the semiconductor substrate on both sides of the gate electrode with the gate electrode as a mask; and a fifth step of introducing an n-type impurity into the surface layer of the active region of the n-type semiconductor device of the semiconductor substrate on both sides of the gate electrode deeper than the phosphorous (P) in said fourth step with at least the gate electrode as a mask, wherein after said first step, said second step to said fifth step are performed in arbitrary order.