Patent ID: 9666438
Date: 2017-05-30
CPC Classifications: H01L

Claim:
1. A method of forming a semiconductor device, comprising: performing a first etch on a dielectric layer overlying an epitaxial (Epi) cap to form an opening; performing a second etch on the Epi cap to establish a substantially concave Epi top surface on the Epi cap; forming a first metal layer over the substantially concave Epi top surface; forming a second metal layer over the first metal layer; and performing an anneal operation on the first metal layer, the second metal layer and Epi cap to form a silicide layer in contact with the substantially concave Epi top surface and having a silicide layer top surface that is substantially concave, wherein at least some of the first metal layer contacts an edge of the silicide layer after the anneal operation.