Invention Grant
- Patent Title: Structure and method of high-performance extremely thin silicon on insulator complementary metal—oxide—semiconductor transistors with dual stress buried insulators
- Patent Title (中): 具有双应力埋层绝缘体的高性能极薄硅绝缘体互补金属氧化物半导体晶体管的结构和方法
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Application No.: US13443133Application Date: 2012-04-10
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Publication No.: US08927364B2Publication Date: 2015-01-06
- Inventor: Ming Cai , Dechao Guo , Liyang Song , Chun-Chen Yeh
- Applicant: Ming Cai , Dechao Guo , Liyang Song , 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
- Agent Derrick J. Carman
- Main IPC: H01L21/8238
- IPC: H01L21/8238

Abstract:
A method of forming a complementary metal oxide semiconductor (CMOS) device including an n-type field effect transistor (NFET) and an p-type field effect transistor (PFET) having fully silicided gates electrode in which an improved dual stress buried insulator is employed to incorporate and advantageous mechanical stress into the device channel of the NFET and PFET. The method can be imposed on a bulk substrate or extremely thin silicon on insulator (ETSOI) substrate. The device includes a semiconductor substrate, a plurality of shallow trench isolations structures formed in the ETSOI layer, NFET having a source and drain region and a gate formation, a PFET having a source and drain region, and a gate formation, an insulator layer, including a stressed oxide or nitride, deposited inside the substrate of the NFET, and a second insulator layer, including either an stressed oxide or nitride, deposited inside the substrate of the PFET.
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