Invention Grant
US09525026B2 Method of forming an epitaxial semiconductor layer in a recess and a semiconductor device having the same
有权
在凹部中形成外延半导体层的方法和具有该外延半导体层的半导体器件
- Patent Title: Method of forming an epitaxial semiconductor layer in a recess and a semiconductor device having the same
- Patent Title (中): 在凹部中形成外延半导体层的方法和具有该外延半导体层的半导体器件
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Application No.: US14942167Application Date: 2015-11-16
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Publication No.: US09525026B2Publication Date: 2016-12-20
- Inventor: Chun Hsiung Tsai , Tsz-Mei Kwok
- Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Slater Matsil, LLP
- Main IPC: H01L21/311
- IPC: H01L21/311 ; H01L23/52 ; H01L29/06 ; H01L21/02 ; H01L29/32 ; H01L29/36 ; C30B25/04 ; C30B29/06 ; C30B29/52

Abstract:
A method of manufacturing a semiconductor device may include: etching a recess in a semiconductor substrate, where the etching produces a metal residue over a surface of the recess. The recess may thereafter be exposed to a cleaning process that causes the metal residue to etch at least one fissure in the semiconductor substrate. The at least one fissure may extend from the surface of the recess into the semiconductor substrate. The method may further include epitaxially forming a liner comprising a first semiconductor material having a first dopant concentration within the recess and over the at least one fissure. The method proceeds with epitaxially forming a semiconductor layer comprising a second semiconductor material having a second dopant concentration over the liner.
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