Synthesis of Cu2O crystals by galvanic deposition technique

A simple galvanic deposition technique has been developed to demonstrate the deposition of cuprous oxide (Cu₂O) on transparent conducting oxide substrate for the first time. The result shows that the morphologies of galvanically obtained Cu₂O crystals are mainly dependent on the nature of anions in aqueous solution. The presence of NO₃⁻ ions tends to increase the stability of (111) planes of Cu₂O cubes and makes the crystals develop a fraction of (111) planes at the corners of the Cu₂O cubes, thus resulting in the formation of truncated octahedral Cu₂O crystals.