Spray-pyrolysis Cd2SnO4 films for electrochemical applications

Conductive cadmium stannate (Cd2SnO4,) films were grown by a simple spray-pyrolysis technique using aerosols ultrasonically generated from solutions containing Cd(thd)2(TMEDA) and nBu2Sn(AcAc)2, and monoglyme as solvent (thd = 2,2,6,6-tetramethyl-3,5-heptanedionate, TMEDA = N,N,N′,N′-tetramethylethylenediamine, AcAc = acethylacetonate). The overall film growing procedure was carried out at or below 400 °C thus allowing low-melting temperature materials like glass to be used as film substrates. Typical resistivity values of Cd2SnO4 films were found to be ∼ 2 · 10 −3 Ωcm. The films exhibit excellent electrochemical activity with comparable or higher electron transfer rates than cadmium stannate films obtained via sol–gel methods at high annealing temperature.