Patent ID: 6254739
Filing Date: 2001-07-03
Classification: C23C

Abstract:
A method for treating a silicon substrate having a surface, comprising:providing a preprocessing chamber, wherein the pre-processing chamber has first and second power supplies for sputtering argon therein, wherein the first power supply can provide the argon with a first bias, and the second power supply can provide the silicon substrate with a second bias;placing the silicon substrate into the pre-processing chamber;providing the first bias to the argon;providing the second bias to the silicon substrate;modifying the first bias and the second bias to sputter the argon to simultaneously dry clean and amorphize the substrate surface;forming a titanium layer on the amorphized substrate surface;performing an annealing step, so that the titanium layer is reacted with the substrate surface to form a titanium silicide layer; andremoving the titanium layer which is not reacted with the substrate surface.