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Crystallographic features of copper column growth by reversible pulse current electrodeposition

Liu, Jun ORCID: https://orcid.org/0000-0002-4549-2833, Liu, Changqing and Conway, Paul P. 2007. Crystallographic features of copper column growth by reversible pulse current electrodeposition. Presented at: IEEE 57th Electronic Components and Technology Conference (ECTC 2007), Reno, NV, USA, 29 May - 1 June 2007. 2007 Proceedings 57th Electronic Components and Technology Conference. IEEE, pp. 892-897. 10.1109/ECTC.2007.373904

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Abstract

Interconnection with single crystal could be attractive for more reliable, predictable and multifunctional electronics assembly at micro- to nano- scale, if each crystal joint has the same crystal structure and orientation. To achieve single crystal copper column growth, electrodeposition has been carried out with the assistance of reversible pulse plating techniques. Initial experiments to understand how plating process will influence the crystal growth provided a guidance for electrodeposition of single crystal copper columns. It has been found that reversible pulse current in large degree changed the morphology of electrodeposited copper compared to the direct current electrodeposition. Pulse parameter such as peak current density and frequency also affected the crystal growth and morphology of copper column formation. It has appeared that achieving single crystal growth by pulse plating alone is found to be less successful. Therefore, the challenges still exist to achieve single crystal copper column formation by electrodeposition. The possible future approaches may consider the related techniques including substrate treatment prior to deposition and ultrasonic agitation during deposition would be beneficial to eliminate the sites of nucleation. {\textcopyright} 2007 IEEE.

Item Type: Conference or Workshop Item (Paper)
Date Type: Published Online
Status: Published
Schools: Engineering
Publisher: IEEE
ISBN: 1424409845
ISSN: 0569-5503
Last Modified: 09 Nov 2022 09:54
URI: https://orca.cardiff.ac.uk/id/eprint/137553

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