Electrochemical Study of UBM Ni Prepared by Electroless Plating

무전해 도금법을 이용한 UBM 니켈 형성의 전기화학적 고찰

The electrochemical behaviors of UBM nickel were investigated. Electrode potential has been changed with the surface composition. Zinc is dissolved into the solution immediately after immersion. Electrode potential has three distinct regions: Zinc dissolution region, transient region and nickel plating region. The effects additives on electrode potential and polarization curves were also investigated. The addition of suppressor lowered the current density which is related with deposition rate.