Invention Grant
US08421132B2 Post-planarization UV curing of stress inducing layers in replacement gate transistor fabrication
失效
后置平面化在替代栅极晶体管制造中应力诱导层的UV固化
- Patent Title: Post-planarization UV curing of stress inducing layers in replacement gate transistor fabrication
- Patent Title (中): 后置平面化在替代栅极晶体管制造中应力诱导层的UV固化
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Application No.: US13103149Application Date: 2011-05-09
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Publication No.: US08421132B2Publication Date: 2013-04-16
- Inventor: Ming Cai , Dechao Guo , Pranita Kulkarni , Chun-Chen Yeh
- Applicant: Ming Cai , Dechao Guo , Pranita Kulkarni , Chun-Chen Yeh
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Cantor Colburn LLP
- Agent Vazken Alexanian
- Main IPC: H01L29/76
- IPC: H01L29/76 ; H01L21/336

Abstract:
A method of forming a semiconductor structure includes forming a stress inducing layer over one or more partially completed field effect transistor (FET) devices disposed over a substrate, the one or more partially completed FET devices including sacrificial dummy gate structures; planarizing the stress inducing layer and removing the sacrificial dummy gate structures; and following the planarizing the stress inducing layer and removing the sacrificial dummy gate structures, performing an ultraviolet (UV) cure of the stress inducing layer so as to enhance a value of an initial applied stress by the stress inducing layer on channel regions of the one or more partially completed FET devices. A semiconductor structure includes a UV cured tensile nitride layer formed over the substrate and between gate structures of the NFET devices, with portions of the UV cured tensile nitride layer having a trapezoidal profile with a bottom end wider than a top end.
Public/Granted literature
- US20120286375A1 PRESERVING STRESS BENEFITS OF UV CURING IN REPLACEMENT GATE TRANSISTOR FABRICATION Public/Granted day:2012-11-15
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