Patent ID: 6057185
Filing Date: 2000-05-02
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device which has N.sup.(+) -type diffusion layers and P.sup.(+) -type diffusion layers on a semiconductor substrate and has a compound film of a semiconductor and a refractory metal on each of surfaces of said N.sup.(+) -type diffusion layers and said P.sup.(+) -type diffusion layers, comprising the steps of:ion implanting an N-type impurity into an exposed surface of an N.sup.(-) -type diffusion layer of said semiconductor substrate to form said N.sup.(+) -type diffusion layers;depositing an oxidized cover film onto each of said surfaces;ion-implanting a P-type impurity into a P.sup.(-) -type diffusion layer of said semiconductor substrate via said cover film, thereby forming said P.sup.(+) -type diffusion layers;performing a first annealing step to activate said N-type impurity and said P-type impurity which are ion-implanted in said semiconductor substrate;removing said oxidized cover film from each of said surfaces after said first annealing step; andforming said compound film and said refractory metal on each of said surfaces of said N.sup.(+) -type diffusion layer and said P.sup.(+) -type diffusion layer after the ion implantation of said N-type impurity and said P-type impurity.