Patent ID: 6812139
Filing Date: 2004-11-02
Classification: H01L

Abstract:
A method of forming a contact in a semiconductor structure, the method comprising:providing a semiconductor substrate; forming a dielectric layer upon the semiconductor substrate and having a top surface; forming a contact hole that extends within the dielectric layer below the top surface thereof, the contact hole being defined by an exposed portion of the semiconductor substrate and a sidewall on the dielectric layer; forming a refractory metal layer disposed within the contact hole upon the sidewall of the dielectric layer; forming a refractory metal silicide structure within the contact hole upon the exposed portion of the semiconductor substrate; forming at least one refractory metal nitride layer by a deposition process using at least TMEDT upon the refractory metal layer within the contact hole, and upon the refractory metal silicide structure; and forming a metallization layer that fills the contact hole and is situated upon the at least one refractory metal nitride layer.