Improving Cu metallization of Si by electrodeposition under centrifugal fields
Electrodeposition of a thin film of copper onto a silicon surface was investigated under centrifugal fields. The results are indicative of the fact that Cu metallization of silicon based on the approach proposed has better properties for practical applications. In this case, more metal is deposited onto the Si substrate suggesting the requirement of a shorter deposition time, which is useful to avoid passivation processes occurring during the deposition process. In addition, denser films with higher electrical conductivity are deposited under stronger centrifugal fields. Moreover, the surfaces of copper films deposited under stronger centrifugal fields are smoother, which is a desirable advantage for the practical performances.
cu metallization electrodeposition centrifugal fields silicon improved adhesion enhanced stability