Patent ID: 8796143
Filing Date: 2014-08-05
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising the steps of: (a) preparing a semiconductor substrate; (b) forming a semiconductor region in the semiconductor substrate; (c) forming a metal film over the semiconductor substrate including the semiconductor region; (d) performing a first heat treatment to cause the metal film to selectively react with the semiconductor region and form a metal silicide layer over the semiconductor region; (e) after the step (d), removing an unreacted part of the metal film to leave the metal silicide layer over the semiconductor region; (f) after the step (e), performing a second heat treatment; and (g) after the step (f), forming an insulating film over the semiconductor substrate including the metal silicide layer, wherein, in the step (d), the first heat treatment is performed using a heat-conduction type anneal apparatus, wherein, in the step (f), the second heat treatment is performed using a microwave anneal apparatus, wherein the metal film contains nickel (Ni) and platinum (Pt); and wherein, in the step (f), platinum (Pt) is segregated at a bottom surface of the metal silicide layer by the second heat treatment.