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This Application Note describes the polarographic determination of indium in electroplating baths used in the production of copper indium gallium diselenide thin-film solar cells (CIGS cells). The CIGS absorber layer is electrodeposited on the molybdenum-coated substrate.

Indium analysis is carried out after dilution of the bath sample with sulfuric acid as supporting electrolyte.


Metrohm AG

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