Nucleation in the Process of Cu-Sn Alloy Nanoscale Films Electrodeposition

摘要

The results of a study of nucleation and growth of nuclei in polyligand pyrophosphate-trilonate electrolyte for Cu-Sn alloy deposition are presented. It is shown that the current transients obtained in a wide range of alloy deposition potentials correspond to the model of instantaneous formation of 3D crystals with diffusion control. The number of nuclei N increases from 0.19,108 cm-2 to 2.05,108 cm-2 with increase in polarization of the electrode. The thickness of continuous films is in the range of 3.6–10.2 nm depending on their deposition potential.