Electrolyte composition

Abstract

The electrolyte composition is used in a method of depositing metals, in particular, onto substrates, especially solar cells. The electrolyte composition is particularly suitable for the deposition of metals, in particular silver, onto solar cells. The electrolyte composition is preferably free of cyanides and contains at least one metal, preferably silver, and an iminodisuccinate derivative, preferably a sodium or postassium iminodisuccinate.

Description

technical field [0001] The present application relates to an electrolyte composition for depositing metals onto a substrate. The electrolyte composition comprises at least metal ions of the metal to be deposited with the composition. Background technique [0002] Electrodeposition of metals from electrolyte solutions is known in the art. For this purpose, the problem to be solved is that the respective metal exists in its ion form and maintains it in this state. Therefore, complexing agents are often used. An important criterion for suitable complexing agents is a sufficiently high stability of the respective complexes formed. In the prior art, cyanide is often used as a complexing agent, which forms extremely stable complexes with many metals. Silver and cyanide in particular form excellent complexes and give good results during the deposition of metals on surfaces. However, the disadvantage of cyanide is that it is highly toxic, so it is not desirable to use it as a c...

AI Technical Summary

Problems solved by technology

On the one hand, the electrodeposition of silver onto solar cells is particularly desirable because the applied layer has a conductivity close to the theoretical one, but on the other hand it is technically challenging

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