3(a and b) shows a decreasing trend for all four curves when PMT/HPTT are added at 500 s, respectively.
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1-(4-Hydroxyphenyl)-2<i>H</i>-tetrazole-5-thione as a leveler for acid copper electroplating of microvia.
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The sentences
There is almost no difference between the deposition potentials at 100 rpm and 1000 rpm, and they both show an increasing trend, suggesting that SPS is slowly replacing the PEP adsorbed on the copper surface.