Semiconductor devices including first and second silicon interconnection regions

摘要

Provided are a semiconductor device and a method of fabricating the same. The semiconductor device includes a first interconnection disposed on a substrate. The interconnection includes a first silicon interconnection region and a first metal interconnection region sequentially stacked on the substrate. A second interconnection includes a second silicon interconnection region and a second metal interconnection region that are stacked sequentially. The second silicon interconnection region has a lower resistivity than the first silicon interconnection region.