Patent ID: 9728601
Date: 2017-08-08
CPC Classifications: H01L

Claim:
1. A semiconductor device, comprising: a plurality of active fins each extending in a first direction on a substrate; a gate structure on the plurality of active fins, the gate structure extending in a second direction that is different from the first direction; and a first source/drain layer on the plurality of active fins and adjacent a side of the gate structure, wherein at least one of opposing sidewalls of a cross-section of the first source/drain layer that is taken along the second direction includes a first curved portion having a slope with respect to an upper surface of the substrate, and an absolute value of the slope of the first curved portion decreases from a bottom of the first curved portion that is close to the substrate to a top thereof, and wherein the cross-section of the first source/drain layer includes an upper surface including first and second linear portions having first and second slopes, respectively, with respect to the upper surface of the substrate, and the opposing sidewalls of the cross-section of the first source/drain layer are between the upper surface of the cross-section of the first source/drain layer and the substrate.