Invention Grant
US07790593B2 Method for tuning epitaxial growth by interfacial doping and structure including same
失效
通过界面掺杂和包括其的结构来调谐外延生长的方法
- Patent Title: Method for tuning epitaxial growth by interfacial doping and structure including same
- Patent Title (中): 通过界面掺杂和包括其的结构来调谐外延生长的方法
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Application No.: US11962796Application Date: 2007-12-21
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Publication No.: US07790593B2Publication Date: 2010-09-07
- Inventor: Katherina E. Babich , Bruce B. Doris , David R. Medeiros , Devendra K. Sadana
- Applicant: Katherina E. Babich , Bruce B. Doris , David R. Medeiros , Devendra K. Sadana
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent Louis J. Percello, Esq.
- Main IPC: H01L21/44
- IPC: H01L21/44

Abstract:
A method that allows for uniform, simultaneous epitaxial growth of a semiconductor material on dissimilarly doped semiconductor surfaces (n-type and p-type) that does not impart substrate thinning via a novel surface preparation scheme, as well as a structure that results from the implementation of this scheme into the process integration flow for integrated circuitry are provided. The method of the present invention can by used for the selective or nonselective epitaxial growth of semiconductor material from the dissimilar surfaces. More specifically, the invention comprises a method for counterdoping of n-FET and/or p-FET regions of silicon circuitry during the halo and/or extension implantation process utilizing a technique by which the surface characteristics of the two regions are made similar with respect to their response to wet or dry surface preparation and which renders the two previously dissimilar surfaces amenable to simultaneous epitaxial growth of raised source/drain structures; but not otherwise affecting the electrical performance of the resulting device.
Public/Granted literature
- US20080153270A1 METHOD FOR TUNING EPITAXIAL GROWTH BY INTERFACIAL DOPING AND STRUCTURE INCLUDING SAME Public/Granted day:2008-06-26
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