Methods of forming metal layers using oxygen gas as a...

Semiconductor device manufacturing: process – Making passive device – Stacked capacitor

Reexamination Certificate

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C438S680000, C438S763000, C257SE21011

Reexamination Certificate

active

07842581

ABSTRACT:
When a metal layer formed by reaction of a metal source and an oxygen (O2) source is deposited, oxidization of a conductive layer disposed under or on the metal layer can be reduced and/or prevented by a method of forming the metal layer and a method of fabricating a capacitor using the same. Between forming the conductive layer and the metal layer, and between forming the metal layer and the conductive layer, a cycle of supplying a metal source, purging, supplying an oxygen source, purging, plasma processing of reduction gas and purging is repeated at least once. In this case, the metal layer is formed by repeating a cycle of supplying a metal source, purging, supplying an oxygen source and purging.

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Office Action from corresponding U.S. Appl. No. 10/801,208, Mailed Dec. 23, 2009.

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