In-situ formation of silicon and tantalum containing barrier

US8946083B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8946083-B2
Application numberUS-201113167857-A
CountryUS
Kind codeB2
Filing dateJun 24, 2011
Priority dateJun 24, 2011
Publication dateFeb 3, 2015
Grant dateFeb 3, 2015

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Abstract

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A method includes forming an opening in a dielectric layer, and forming a silicon rich layer on a surface of the dielectric layer. A portion of the silicon rich layer extends into the opening and contacts the dielectric layer. A tantalum-containing layer is formed over and the contacting the silicon rich layer. An annealing is performed to react the tantalum-containing layer with the silicon rich layer, so that a tantalum-and-silicon containing layer is formed.

First claim

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What is claimed is: 1. A method comprising: forming an opening in a dielectric layer; forming a silicon rich layer in the opening and contacting the dielectric layer; forming a tantalum-containing layer over and contacting the silicon rich layer; performing an annealing to react the tantalum-containing layer with the silicon rich layer to form a tantalum-and-silicon containing layer; after the annealing, filling the opening with a copper-containing metallic material, where…

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What does patent US8946083B2 cover?
A method includes forming an opening in a dielectric layer, and forming a silicon rich layer on a surface of the dielectric layer. A portion of the silicon rich layer extends into the opening and contacts the dielectric layer. A tantalum-containing layer is formed over and the contacting the silicon rich layer. An annealing is performed to react the tantalum-containing layer with the silicon ri…
Who is the assignee on this patent?
Jangjian Shiu-Ko, Wang Ting-Chun, Wu Szu-An, and 1 more
What technology area does this patent fall under?
Primary CPC classification H10P95/00. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).