Patent ID: 6376358
Filing Date: 2002-04-23
Classification: G11C,H01L

Abstract:
A method of fabricating silicided plugs, the method comprising the steps of:providing a silicon substrate overlaid with an insulative layer; the silicon substrate having at least one N-type doped region and at least one P-type doped region, wherein the N-type doped region and P-type doped region are arranged to form at least one diffused source/drain junction; forming a first opening in the insulative layer to expose the diffused source/drain junction and at least part of the N-type doped region and/or the P-type doped region; depositing a first highly doped polysilicon into the first opening to form a first plug, the first plug having an exposed surface; forming a second opening in the insulative layer adjacent to the first plug to expose at least part of the doped region having a different type doping than the first highly doped polysilicon; depositing a second highly doped polysilicon, having the same type doping as the region exposed by the second opening, into the second hole to form a second plug abutting the first plug, the second plug having an exposed surface; and forming a silicide layer over the exposed surfaces of the first plug and the second plug.