| 摘要 |
<p>An acid copper electroplating solution comprising an organic additive is stabilised by including a transition metal in an amount of not more than 5 g/l, the transition metal being capable of existing in at least two positive oxidation states, but being substantially present in its lowest common positive oxidation state, in the solution. The organic additive may comprise at least one grain refiner, which may act as a brightener. The transition metal may be selected from at least one of Mn<2><+>, Fe<2><+>, Cr<2><+> and Ti<2><+>. The electroplating solution may be one from the Copper Gleam 125 series marketed by LeaRonal.</p> |
