Patent ID: 7749877
Filing Date: 2010-07-06
Classification: H01L

Abstract:
1. The process of forming a Pt/Ni Schottky barrier comprising: depositing a first layer film of given thickness atop a silicon wafer surface, wherein said first layer film is either a Pt or Ni; after said depositing said first layer film, depositing a second layer film of given thickness atop the first deposited film, wherein said second layer film is a Pt if said first layer film is Ni, and wherein said second layer film is a Ni if said first layer film is Pt; and annealing said films to cause the inter diffusion of Pt and Ni, and the growth of areas of nickel and platinum silicides at the silicon surface to define a Schottky junction barrier in the range of 640 meV to 840 meV, wherein said first layer film reacts with said silicon wafer to form a rich metal silicide, and wherein said second layer film diffuses through said rich metal silicide.