Ion recoil implantation and enhanced carrier mobility in...

Active solid-state devices (e.g. – transistors – solid-state diode – Thin active physical layer which is – Heterojunction

Reexamination Certificate

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C257S369000, C257SE29193

Reexamination Certificate

active

07129516

ABSTRACT:
An integrated circuit (IC) includes a CMOS device formed above a semiconductor substrate having ions therein that are implanted in the semiconductor substrate by an ion recoil procedure. The IC preferably, but not necessarily, incorporates sub-0.1 micron technology in the CMOS device. The implanted ions may preferably be germanium ions. A strained-silicon layer is preferably, but not necessarily, formed above the ion-implanted layer of the semiconductor substrate. The strained-silicon layer may be formed by a silicon epitaxial growth on the ion-implanted layer or by causing the ions to recoil into the semiconductor substrate with such energy that a region of the semiconductor substrate in the vicinity of the surface thereof is left substantially free of the ions, thereby forming a strained-silicon layer in the substantially ion-free region.

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