Hybrid-orientation technology (HOT): opportunities and challenges

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Abstract
At the onset of innovative device structures intended to extend the roadmap for silicon CMOS, many techniques have been investigated to improve carrier mobility in silicon MOSFETs. A novel planar silicon CMOS structure, seeking optimized surface orientation, and hence carrier mobilities for both nFETs and pFETs, emerged. Hybrid-orientation technology provides nFETs on (100) surface orientation and pFETs on [110] surface orientation through wafer bonding and silicon selective epitaxy. The fabrication processes and device characteristics are reviewed in this paper.

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