Mechanistic Studies on the Electrodeposition of ZnTe

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Abstract
Voltammetry on glassy carbon and steel rotating disk electrodes (RDE) was used to investigate the plating of ZnTe, an important material for heterojunction solar cells, by codeposition from acidic (pH 2 to 5) aqueous solutions containing and . The influence of pH, , and concentration, and mass transfer under controlled conditions is shown. From RDE at various and we can conclude that the plating of ZnTe is controlled by mass transfer of the tellurium precursor, and that adsorption does not play a major role. The limitations of plating due to side reactions at pH (3) can be overcome by using pH 4.5 and a special precursor. Optimized plating conditions and use of elevated temperatures led to the formation of stoichiometric, well‐crystallized material.

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