Correlation of electrochemical and ellipsometric data in relation to the kinetics and mechanism of Cu2O electroformation in alkaline solutions

M.R. GENNERO DE CHIALVO; J.O. ZERBINO; S.L. MARCHIANO; A.J. ARVIA

JOURNAL OF APPLIED ELECTROCHEMISTRY

SPRINGER

Lugar: Berlin; Año: 1986 vol. 16 p. 517 - 526

0021-891X

The kinetics of copper anodization were studied in the potential range of Cu2O electroformation in different alkaline solutions by using voltammetric, rotating disc electrode, rotating ring-disc electrode and ellipsometric techniques. Thin layer and massive copper electrodes were employed. Results indicate the formation of soluble Cu(I) species at the early stage of copper anodization. Other soluble Cu(II) species are produced after the Cu2O layer electroformation. Data are discussed on the basis of a reaction mechanism involving different reaction products and the influence of the copper surface on the initial electrochemical reaction.