Bipolar transistor with carbon alloyed contacts

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United States of America Patent

PATENT NO 9490352
SERIAL NO

15074633

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Abstract

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A method for forming a bipolar junction transistor includes forming a collector intrinsic region, an emitter intrinsic region and an intrinsic base region between the collector intrinsic region and the emitter intrinsic region. A collector extrinsic contact region is formed in direct contact with the collector intrinsic region; an emitter extrinsic contact region is formed on the emitter intrinsic region and a base extrinsic contact region is formed in direct contact with the intrinsic base region. Carbon is introduced into at least one of the collector extrinsic contact region, the emitter extrinsic contact region and the base extrinsic contact region to suppress diffusion of dopants into the junction region.

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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
Chan, Kevin K Staten Island, US 229 4014
Hekmatshoartabari, Bahman White Plains, US 389 1813
Ning, Tak H Yorktown Heights, US 251 3242

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