Patent ID: 7622339

Claim:
A method for forming a semiconductor device, comprising: providing a substrate; forming a first insulating layer over the substrate; forming a plurality of etched polysilicon base structures over the first insulating layer, each said etched polysilicon base structure having a first base width and a first height; forming a recessed spacer on at least one side of each etched polysilicon base structure having a height that is less than the first height of the etched polysilicon base structure and having a total spacer width; forming a patterned mask to cover the substrate except for an opening formed over each etched polysilicon base structure in alignment with the recessed spacer to expose a region over each etched polysilicon base structure; clearing at least a top surface of each etched polysilicon base structure while otherwise leaving the substrate covered by the patterned mask; epitaxially growing a polysilicon layer at any exposed surface of each etched polysilicon base structure, thereby forming a polysilicon structure having an upper region with a second width that is wider than the first base width; and forming silicide in the upper region of the polysilicon structure.