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An Electrochemical Deposition Route for Obtaining α-Fe[sub 2]O[sub 3] Thin Films

2007; Electrochemical Society; Volume: 10; Issue: 10 Linguagem: Inglês

10.1149/1.2756160

1944-8775

Ricardo Schrebler, Cynthia Llewelyn, Francisca Vera, P. Cury, Eduardo Muñoz, Rodrigo Del Río, H. Meier, Ricardo Córdova, Enrique A. Dalchiele,

Metal Extraction and Bioleaching

The electrochemical formation of hematite precursor thin films (oxyhydroxide iron compounds), onto gold substrates in an aqueous solution of was investigated in situ using an electrochemical quartz crystal microbalance (EQCM) and voltammetric techniques. Nanostructured obtained after annealing of oxyhydroxide iron compounds thin films have been prepared onto covered glass substrates through a potential cycling procedure in this electrolytic bath. Photoelectrochemical measurements, carried out in electrolyte at pH 13, show an n-type behavior, a flatband potential of vs saturated mercury/mercury sulfate reference electrode, and an apparent donor density of at .