Technique for transferring strain into a semiconductor region

Semiconductor device manufacturing: process – Introduction of conductivity modifying dopant into... – Ion implantation of dopant into semiconductor region

Reexamination Certificate

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C438S520000, C438S938000, C257SE21335

Reexamination Certificate

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07494906

ABSTRACT:
A dislocation region is formed by implanting a light inert species, such as hydrogen, to a specified depth and with a high concentration, and by heat treating the inert species to create “nano” bubbles, which enable a certain mechanical decoupling to underlying device regions, thereby allowing a more efficient creation of strain that is induced by an external stress-generating source. In this way, strain may be created in a channel region of a field effect transistor by, for instance, a stress layer or sidewall spacers formed in the vicinity of the channel region.

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