Patent ID: 6762121
Filing Date: 2004-07-13
Classification: C23C,Y10T

Abstract:
A method of filling an opening in an oxide layer, over a liner layer formed on a surface of a silicide substrate underlying both the oxide layer and the liner layer, the method comprising:forming a first continuous sacrificial layer comprising silicon, by either physical vapor deposition (PVD) or chemical vapor deposition (CVD) at a first temperature in the range 500Â° C. to 650Â° C. completely covering the oxide layer and the liner layer; forming a second layer, comprising a refractory material, on the first continuous sacrificial layer at a second temperature that is lower than the first temperature so as to cover the first layer and to also substantially fill the opening; and during said forming a second layer, sacrificing at least a portion of the first continuous sacrificial layer, wherein said sacrificing at least a portion of the first continuous sacrificial layer ensures against a deterioration of the silicide substrate underlying both the oxide layer and the liner layer.