Electrochemical study concerning the deposition of copper on selenium covered gold electrodes

Voltammetry, chronoamperometry and anodic stripping voltammetry were used t o study the processes involved in the electrodeposition of copper on polycr ystalline gold electrodes previously covered with selenium layers. Through the analysis of the I-t transients it was possible to establish the potenti al edge where the initial stages of copper-selenium compounds starts. Takin g into account the charges involved in the redissolution of deposits obtain ed by stepping the potential in a narrow interval, a general reaction schem e that considers the formation of CuSe and Cu2-xSe compounds is proposed. ( C) 2001 Elsevier Science B.V. All rights reserved.