Electrochemical Deposition of W-O-Se Thin Films on Polycrystalline Pt Electrode

The possibility of electrochemical deposition of W- and Se-containing thin films on polycrystalline Pt electrode is demonstrated. Various electroanalytical techniques (linear sweep and cyclic voltammetry, chronopotentiometry, chronoamperometry) were used for the elucidation of some peculiarities of deposition process.An acidic electrolyte composed of selenious acid and tungsten(VI) peroxo complex in 0.3 M nitric acid was used for the synthesis. It was established that the as-depositedW-O-Se layers are amorphous and contain various amounts of tungsten and selenium, depending on synthesis conditions.