The electrolyte and the process for the electrolytic deposition of cu - zn - sn - alloy layers and process for the production of a thin-film solar cell

摘要

The present invention relates to a cyanide-free, pyrophosphate free and phosphonic acid free electrolyte and a process for the electrolytic deposition of a ternary alloy of the elements copper, tin and zinc. The electrolyte or the method is distinguished in that respect in that in addition to zinc - ii - ions and stannate anions also copper - ions are present in the electrolytes employed. The copper - and zinc ions are in a defined molar ratio to one another.