Method and apparatus for improving film stability of halogen-dop

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

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438774, 438783, 438787, 438763, H01L 21425, H01L 2131, H01L 21469

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061036013

ABSTRACT:
A fluorine-doped silicate glass (FSG) layer having a low dielectric constant and a method of forming such an insulating layer is described. The FSG layer is treated with a post-treatment step to make the layer resistant to moisture absorption and outgassing of fluorine atoms. In one embodiment, the post-treatment step includes forming a thin, undoped silicate glass layer on top of the FSG layer, and in another embodiment, the stability of the FSG film is increased by a post-treatment plasma step.

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