Simplified multi-threshold voltage scheme for fully depleted SOI MOSFETs

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United States of America Patent

PATENT NO 9219078
SERIAL NO

13865795

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A method for semiconductor fabrication includes providing channel regions on a substrate including at least one Silicon Germanium (SiGe) channel region, the substrate including a plurality of regions including a first region and a second region. Gate structures are formed for a first n-type field effect transistor (NFET) and a first p-type field effect transistor (PFET) in the first region and a second NFET and a second PFET in the second region, the gate structure for the first PFET being formed on the SiGe channel region. The gate structure for the first NFET includes a gate material having a first work function and the gate structures for the first PFET, second NFET and second PFET include a gate material having a second work function such that multi-threshold voltage devices are provided.

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TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD8 LI-HSIN RD 6 HSINCHU SCIENCE PARK HSINCHU 300-78

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cheng, Kangguo Schenectady, US 3099 32749
Doris, Bruce B Brewster, US 797 13759
Khakifirooz, Ali Mountain View, US 843 12822
Liu, Qing Guilderland, US 537 5415
Loubet, Nicolas Guilderland, US 245 2330
Luning, Scott Albany, US 61 1760

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