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The stress effect at the channel region of pFETs with compressive stress liner (c-SL) and eSiGe using replacement gate technology is firstly investigated in detail based on the combination of UV-Raman spectroscopy and 3D stress simulation. The gate length effect for the channel stress is confirmed by measurement and simulation. Moreover, the Ion dependence on the channel width is also investigated...
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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