Publication date: 31 July 2018
Source:Thin Solid Films, Volume 658
Author(s): M. Sima, E. Vasile, A. Sima
Nanostructured hematite (α-Fe2 O3 ) film deposited on mesoporous titania (TiO2 ) underlayer was described as a photoanode for photoelectrochemical water splitting. Mesoporous TiO2 layers were prepared by spin coating a paste on conductive fluorine-doped tin oxide glass followed by an annealing process. Hematite film was prepared after electrochemical and annealing processes. The TiO2 /Fe2 O3 photoanodes achieve photocurrent densities up to 0.5 mA/cm2 at 1.23 V versus reversible hydrogen electrode. This value is greater than that for photocurrent density obtained with pristine hematite photoanode. Impedance measurements showed that prepared heterostructure TiO2 /Fe2 O3 contributes to diminution of electron-hole recombination process.
Source:Thin Solid Films, Volume 658
Author(s): M. Sima, E. Vasile, A. Sima