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Newly proposed mobility-booster technologies are demonstrated for metal/high-k gate-stack n- and pMOSFETs. The process combination of top-cut SiN dual stress liners and damascene gates remarkably enhances local channel stress particularly for shorter gate lengths in comparison with a conventional gate-first process. Dummy gate removal in the damascene gate process induces high channel stress, because...
A novel channel-stress enhancement technology on damascene gate process with eSiGe S/D for pFET is demonstrated. It is found for the first time that the damascene gate process featured by the dummy gate removal is more effective in increasing channel strain than the gate-1st process as an embedded SiGe stressor technique is used. Furthermore, an additional channel recess related to the damascene process...
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