Patent ID: 7595264
Filing Date: 2009-09-29
Classification: H01L

Abstract:
1. A method of fabricating a semiconductor device, comprising: providing a silicon-containing conductive layer; forming a refractory metal alloy layer over the silicon-containing conductive layer, wherein the refractory metal alloy layer comprising a first refractory metal and a second refractory metal; forming a cap layer over the refractory metal alloy layer; performing a thermal process so that the refractory metal alloy layer react with silicon of the silicon-containing conductive layer to form a refractory metal alloy salicide layer; performing an etch process with an etch solution to remove the cap layer and the refractory metal alloy layer which has not been reacted, and to form a protection layer on the refractory metal alloy salicide layer; and performing a surface treatment to increase the thickness of the protection layer.