Abrupt source/drain junction formation using a diffusion facilitation layer

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United States of America Patent

PATENT NO 9520397
APP PUB NO 20150270343A1
SERIAL NO

14697024

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Abstract

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A method of forming a field effect transistor (FET) device includes forming a diffusion facilitation layer on top of a semiconductor substrate; forming a doped, raised source/drain (RSD) layer on the diffusion facilitation layer; removing a portion of the diffusion facilitation layer, corresponding to a region directly above a channel region of the FET device; and performing an anneal so as to define abrupt source and drain junctions in the semiconductor substrate, wherein dopant atoms from the doped RSD layer diffuse within the diffusion facilitation layer at a faster rate than with respect to the semiconductor substrate.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cheng, Kangguo Schenectady, US 3059 29470
Doris, Bruce B Brewster, US 796 13197
Hashemi, Pouya White Plains, US 599 4420
Khakifirooz, Ali Mountain View, US 841 11814
Reznicek, Alexander Troy, US 1405 11060

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