Method for electrochemically depositing metal on a reactive metal film
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United States of America Patent
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Dec 12, 2017
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Mar 3, 2015
filing date -
May 30, 2014
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Abstract
In accordance with one embodiment of the present disclosure, a method for depositing metal on a reactive metal film on a workpiece includes electrochemically depositing a metallization layer on a seed layer formed on a workpiece using a plating electrolyte having at least one plating metal ion, a pH range of about 6 to about 11 and applying a cathodic potential in the range of about −1 V to about −6 V. The workpiece includes a barrier layer disposed between the seed layer and a dielectric surface of the workpiece, the barrier layer including a first metal having a standard electrode potential more negative than 0 V and the seed layer including a second metal having a standard electrode potential more positive than 0 V.
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