Semiconductor device manufacturing: process – Coating with electrically or thermally conductive material – To form ohmic contact to semiconductive material
Reexamination Certificate
2006-04-24
2008-12-16
Lee, Calvin (Department: 2892)
Semiconductor device manufacturing: process
Coating with electrically or thermally conductive material
To form ohmic contact to semiconductive material
C257S754000
Reexamination Certificate
active
07465664
ABSTRACT:
A method for fabricating a semiconductor device to lower source/drain sheet resistance is provided. A dielectric layer with a plurality of contact windows is formed on a semiconductor device. Next, selective epitaxial growth (SEG) is implemented, and then a metal layer is sputtered. After that, a silicide is formed by heat treatment. In another embodiment, selective epitaxial growth is implemented first, and then a dielectric layer with a plurality of contact windows is formed. Then, a metal layer is sputtered, and a silicide is then formed by heat treatment. Since the silicide is formed by way of SEG, the silicon substrate will not be consumed during the process of forming the silicide, and the depth of the junction region is maintained, and the source/drain sheet resistance is lowered.
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Ho Ching-Yuan
Lien Chen-Hsin
Industrial Technology Research Institute
Lee Calvin
Rabin & Berdo P.C.
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