Copper electrodeposition in microelectronics

An electrolytic plating method and composition for electrolytically plating Cu onto a semiconductor integrated circuit substrate having submicron-sized interconnect features. The composition comprises a source of Cu ions and a suppressor compound comprising polyether groups. The method involves supe...

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Bibliographic Details
Main Authors Paneccasio, Jr., Vincent, Lin, Xuan, Hurtubise, Richard, Figura, Paul
Format Patent
LanguageEnglish
Published 06.09.2022
Subjects
APPARATUS THEREFOR
BASIC ELECTRIC ELEMENTS
CHEMISTRY
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
ELECTROFORMING
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
METALLURGY
PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS
SEMICONDUCTOR DEVICES
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Summary:An electrolytic plating method and composition for electrolytically plating Cu onto a semiconductor integrated circuit substrate having submicron-sized interconnect features. The composition comprises a source of Cu ions and a suppressor compound comprising polyether groups. The method involves superfilling by rapid bottom-up deposition at a superfill speed by which Cu deposition in a vertical direction from the bottoms of the features to the top openings of the features is substantially greater than Cu deposition on the side walls.
Bibliography:Application Number: US201816030344