Patent ID: 7566651

Claim:
A method of making a semiconductor structure, comprising: forming a mask over a first portion of a dielectric material; removing a section of the dielectric material from a second portion of the dielectric material not covered by the mask; forming a first trench through the first portion of the dielectric material to a first silicide layer disposed above a first doped region, thereby exposing an upper surface of the first silicide layer without exposing the first doped region; forming a second trench, substantially concurrently with the forming the first trench, through the second portion of the dielectric material and through a second silicide layer, thereby exposing a surface of a second doped region; forming a silicide contact on the surface of the second doped region; and substantially concurrently filling the first and second trenches with contact stud metal, wherein: after the removing, a top surface of the second portion of the dielectric material is lower than a top surface of the first portion of the dielectric material by a distance that equals or exceeds a depth of the second silicide layer, the forming the silicide contact comprises depositing a metal on exposed surfaces of the first trench and the second trench and annealing the metal, the first doped region comprises a n-type semiconductor material, the second doped region comprises an p-type semiconductor material, and the depositing the metal comprises sputtering a film of Platinum or Iridium.