Low-k b-doped SiC copper diffusion barrier films

Semiconductor device manufacturing: process – Coating with electrically or thermally conductive material – To form ohmic contact to semiconductive material

Reexamination Certificate

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C438S643000, C438S653000, C257SE21021

Reexamination Certificate

active

07842604

ABSTRACT:
The present invention provides a low dielectric constant copper diffusion barrier film composed, at least in part, of boron-doped silicon carbide suitable for use in a semiconductor device and methods for fabricating such a film. The copper diffusion barrier maintains a stable dielectric constant of less than 4.5 in the presence of atmospheric moisture.

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