Plasma-assisted doping

Semiconductor device manufacturing: process – Introduction of conductivity modifying dopant into...

Reexamination Certificate

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C438S513000, C257SE21143

Reexamination Certificate

active

07494904

ABSTRACT:
Methods and apparatus are provided for igniting, modulating, and sustaining a plasma for various doping processes. In one embodiment, a substrate (250) can be doped by forming a plasma (610) in a cavity (285) by subjecting a gas to an amount of electromagnetic radiation in the presence of a plasma catalyst (240) and adding at least one dopant material to the plasma. The material is then allowed to penetrate into the substrate. Various active and passive catalysts are provided.

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