Invention Grant
US08999779B2 Locally raised epitaxy for improved contact by local silicon capping during trench silicide processings
有权
局部升高的外延,以便在沟槽硅化物处理期间通过局部硅封盖改善接触
- Patent Title: Locally raised epitaxy for improved contact by local silicon capping during trench silicide processings
- Patent Title (中): 局部升高的外延,以便在沟槽硅化物处理期间通过局部硅封盖改善接触
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Application No.: US14019568Application Date: 2013-09-06
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Publication No.: US08999779B2Publication Date: 2015-04-07
- Inventor: Sebastian Naczas , Vamsi Paruchuri , Alexander Reznicek , Dominic J. Schepis
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Joseph Petrokaitis; L. Jeffrey Kelly
- Main IPC: H01L21/84
- IPC: H01L21/84 ; H01L29/78

Abstract:
A low resistance contact to a finFET source/drain can be achieved by forming a defect free surface on which to form such contact. The fins of a finFET can be exposed to epitaxial growth conditions to increase the bulk of semiconductive material in the source/drain. Facing growth fronts can merge or can form unmerged facets. A dielectric material can fill voids within the source drain region. A trench spaced from the finFET gate can expose the top portion of faceted epitaxial growth on fins within said trench, such top portions separated by a smooth dielectric surface. A silicon layer selectively formed on the top portions exposed within the trench can be converted to a semiconductor-metal layer, connecting such contact with individual fins in the source drain region.
Public/Granted literature
- US20150069531A1 LOCALLY RAISED EPITAXY FOR IMPROVED CONTACT BY LOCAL SILICON CAPPING DURING TRENCH SILICIDE PROCESSINGS Public/Granted day:2015-03-12
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