CMOS structure on SSOI wafer

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United States of America Patent

PATENT NO 9508741
APP PUB NO 20160233240A1
SERIAL NO

14618397

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Abstract

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A method of forming fins in a complimentary-metal-oxide-semiconductor (CMOS) device that includes a p-type field effect transistor device (pFET) and an n-type field effect transistor (nFET) device and a CMOS device are described. The method includes forming a strained silicon-on-insulator (SSOI) layer in both a pFET region and an nFET region, etching the strained silicon layer, the insulator, and a portion of the bulk substrate in only the pFET region to expose the bulk substrate, epitaxially growing silicon (Si) from the bulk substrate in only the pFET region, and epitaxially growing additional semiconductor material on the Si in only the pFET region. The method also includes forming fins from the additional semiconductor material and a portion of the Si grown on the bulk substrate in the pFET region, and forming fins from the strained silicon layer and the insulator in the nFET region.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Doris, Bruce B Slingerlands, US 796 13224
He, Hong Schenectady, US 1180 7747
Khakifirooz, Ali Los Altos, US 842 11881
Wang, Junli Slingerlands, US 492 2761

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