公开(公告)号：US09899497B2

公开(公告)日：2018-02-20

申请号：US15355781

申请日：2016-11-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jin Bum Kim ,  Kang Hun Moon ,  Choeun Lee ,  Kyung Yub Jeon ,  Sujin Jung ,  Haegeon Jung ,  Yang Xu

IPC: H01L29/66 ,  H01L29/08 ,  H01L21/306 ,  H01L21/02

CPC classification number: H01L29/66795 ,  H01L21/02381 ,  H01L21/0243 ,  H01L21/02433 ,  H01L21/02532 ,  H01L21/30604 ,  H01L29/0847 ,  H01L29/66545 ,  H01L29/66636 ,  H01L29/7848

Abstract: A method of fabricating a semiconductor device is disclosed. The method includes forming an active pattern protruding orthogonally from a substrate; forming a preliminary gate structure on the active pattern to cross the active pattern; etching the active pattern to form preliminary recess regions at both sides of the preliminary gate structure, wherein each of the preliminary recess regions is formed to define a delta region in an upper portion of the active pattern; forming a sacrificial layer on inner side surfaces and a bottom surface of the active pattern exposed by each of the preliminary recess regions; etching the delta regions and the sacrificial layer to form recess regions having a ‘U’-shaped section; and forming source/drain regions in the recess regions.

公开(公告)号：US09859387B2

公开(公告)日：2018-01-02

申请号：US14990793

申请日：2016-01-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jin Bum Kim ,  Chul Sung Kim ,  Kang Hun Moon ,  Yang Xu ,  Bon Young Koo

IPC: H01L27/088 ,  H01L29/417 ,  H01L29/78 ,  H01L29/08 ,  H01L29/161 ,  H01L29/36 ,  H01L29/45 ,  H01L29/66 ,  H01L27/11 ,  H01L29/775 ,  H01L29/06

CPC classification number: H01L29/41791 ,  H01L27/1104 ,  H01L29/0673 ,  H01L29/0847 ,  H01L29/161 ,  H01L29/36 ,  H01L29/41758 ,  H01L29/45 ,  H01L29/66795 ,  H01L29/775 ,  H01L29/785

Abstract: A semiconductor device includes a substrate having an upper surface, a plurality of active fins on the substrate, a gate electrode crossing the plurality of active fins, and at each side of the gate electrode, a source/drain region on the plurality of active fins. The source/drain region may include a plurality of first regions extending from the active fins, and a second region between each of the plurality of first regions. The second region may have a second germanium concentration greater than the first germanium concentration. The source/drain region may be connected to a contact plug, and may have a top surface that has a wave shaped, or curved surface. The top surface may have a larger surface area than a top surface of the contact plug.