Manu, R. and Shoba, J.
(2009)
Influence of Additives and the Effect of Aging in Modifying
Surface Topography of Electrodeposited Copper.
Journal of the Electrochemical Society, 456 (7).
pp. 215-221.
ISSN 0013-4651
Abstract
The influence of most common additives used for copper electrodeposition on the physical, microstructure as well as the morphological
character of the deposit has been studied. The effect of room-temperature aging on the microstructure of the copper
deposit is also discussed in the present work. The X-ray diffraction pattern of the copper deposit has a prominent (111) orientation
in addition to (200), (220), and (311) planes typical of copper deposits; the intensity of the planes during aging has a prominent
�200� plane; and the ratio of I111 to I200 changes significantly. The scanning electron microscopy analysis showed that the deposit
normally appears to have round or globular features and that there is a change in grain size with respect to a particular additive.
From the atomic force microscopy analysis, we can confirm that the average grain size and the roughness of the copper deposits
strongly depend on the deposition rate and the type of additive in the bath. There is a change in the grain size and the morphology
of the copper deposit due to room-temperature aging. The roughness of the surface increases, and an abrupt shift in the hardness
of the coating occurs during aging
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