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 Zn2+ and TeO2. The influence of pH, TeO2, and Zn2+ concentration, and mass transfer under controlled conditions is shown. From RDE at various [Zn2+] and [TeO2] we can conclude that the plating of ZnTe is controlled by mass transfer of the tellurium precursor, and that Zn2+ adsorption does not play a major role. The limitations of plating due to side reactions at pH (<3) and limited solubility of TeO2 at high 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.