Patent ID: 6743485
Filing Date: 2004-06-01
Classification: C23C

Abstract:
A method for treating a silicon substrate having a surface, comprising:providing a pre-processing 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 metal film on the amorphized substrate surface; performing an annealing step, so that the metal film is reacted with the substrate surface to form a metal silicide layer; and removing the metal film which is not reacted with the substrate surface.